Awesome... i knew the different strengths but thats about it. I definitely didnt realize how the nuts were marked. Great video. Thanks for the education
Hey scoutcrafter, In the hardware store where I work my job is ordering and maintaining the fastener aisle. Often times I get customers that come in to purchase bolts and nuts and I ask them what is the application. They give me the deer in the headlight look and say "I just need a nut and bolt". Then I have to explain about nuts and bolts. Sure wish I had a small screen where I could just turn on your video. Informative and not boring. Thanks, Mike
You are right in asking the application, its very important and for safety reasons as Scoutcrafter mentioned. Imagine someone using a low tensile bolt on a car, truck suspension joint, or a lifting shackle.
Good design practice is to remember that a nut and bolt is a very powerful spring. They work by clamping the parts together. In some applications the torque applied to the bolt is defined by how much the bolt is stretched by measurement with a micrometer. An example of this would be found in some engine connecting rod cap bolts. Generally the nut should be softer than the bolt. This is so that the threads in the nut will deform to the bolt threads and permit a greater torque to be applied without the bolt failing. An example of this would be that some engine rebuild procedures require the connecting rod nuts to be only used once while the connecting rod bolts may be used twice before replacement. Putting a bolt in shear is very bad practice. The failure will begin in the root of the thread followed by catastrophic failure. Drilling holes without adequate bolt clearance is to be avoided. Shouldered bolts are no help here. If the mating parts start to shift, it's likely that one bolt in the assembly will be absorbing most of the shear load and the bolts will fail in a chain reaction. If parts must by accurately located to each other, dowel pins, roll pins, keys or some other positive location method should be used. Washers are generally made of a softer material so they will deform to the work so the loading from the bolt or nut will be spread out over a larger area. Some spring alloy washers are made in a conical section so that when crushed flat they are generating the desired clamping force. One caution: On cast iron, never use split spring washers as the sharp edge of the split may start a crack in the iron. On cast iron always spot face the casting's bolt holes so that the nuts, bolts, and flat washers will set flat on the casting and not crack the very brittle cast iron. Cheers from NC/USA
Cotter pins in US .😎 Split pins in the UK. Nuts and bolts are taken for granted but without them modern day life would be impossible! Thanks Scout Crafter a very interesting subject.
@@jusb1066 I used one on a Peugeot gearbox on a clutch change recently. cotter pins are similar to bolts but different...suppose it depends which side of the pond your on.
While I alway enjoy your videos, I’m going to put this in the top five. It’s amazing how comprehensive you can be in just under 15 minutes. Thanks so much. 😀
Fantastic job in teaching John. Amazing how many things we all tend to miss and or pass over in daily life. Yet how important these little markings are to the machinery and engineering we trust our lives to each day.👍🏻👏
Extremely well done! Bolt basics everyone needs. Do i feel a similar show on drill bits coming? Twist, Forstner, spade, hole saws, diamond, ceramic, titanium coated, carbide, jobber, aircraft, etc. Thank you for caring so much about your audience!
Super interesting video again! I'm going to re-watch it a couple of times to remember and understand our metric system on bolt grading. Your a great teacher and true mentor. Carry on and I look forward to the the next one. Thanks a lot John! (I bet that big bolt would look nice polished up)
I work on an Air Force base and had to look up some hardware for one of our trainers and got education on the different types of bolts. They call Allen head bolts internal wrenching bolts and hex head and 12 point bolts external wrenching bolts because of where the tool is on the bolt head. Bolts are actually called cap screws, they become a bolt after you thread a nut onto it. Great channel, always learn something new from it.
Hi Scott- YES! The guys with the pocket protectors love to get technical on what is or isn't a screw or a bolt- Basically a screw threads into something and a bolt needs a nut but in the real world a screw holds wood together and a bolt has a bunch of definitions.. They get all bent out of shape when they try to call it a carriage screw instead of a carriage bolt! =)
Not only was it interesting but helpful too! I have seen the markings on the nuts and bolts but I never knew what they represented until now. This will help me decide what kind on bolt I need for a project. Thanks for sharing this.
I just came in from mounting a hi-lift jack to my roof-rack. After watching the video I went back out and checked, and sure enough the supplier had given me grade 5 bolts to survive the journeys on the corrugated bush tracks. Great info. The other marking that I have seen commonly is the notched nut. I know you will instantly know, but I am wondering how many of your viewers would know what that signifies.
The funny thing is the Hi-Lift incorporates a Non-Hardened bolt that acts as a shear pin! The one bolt you absolutely don't want to upgrade! LOL!!!! Great jack!
Thank you John for the education! It amazes me how much engineering went into making different kinds/sizes of nuts n bolts. I have coffee cans full and now I can actually separate them by the types of hardness, ect.. I learn more from you and other TH-camrs! Again, I love and appreciate your channel. I'm in Wisconsin and I'm hoping to visit one of those steam shows and bump into you next year. I'd enjoy the heck out of chatting with you (not sure about my wife tho😉lol) She'd probably Thank you for my tool fetish!! Take care
I didn't know about the bolt and nut markings, and that is actually important information as you point out! Many will know this, but an excellent resource that's user-friendly in the shop is titled "Fastener Black Book" out of the Engineer's guides compiled by Pat Rapp - a great Aussie.
I never knew there was so much to learn about bolts crazy fantastic lesson John amazing stuff I’m off to check all my bolts now ha ha god bless take care 👏🎅🔩⚙️
Good show. I wondered if you were going to quiz folks about the hole in the big bolt. Glad you sneaked it in right at the end. Surprisingly, a lot of folks don't know what that's for. They are quite frequent in the aircraft industry. Most often on engines. Keep the shows coming.
Now we are down to the nuts and bolts of things. Really people should make copies of your illustrations and hang them on their shop wall. Just like the drill bit posters and others that were handed out free by dealers in the old days.
Hi Scout , Great Class for People Who Didn't Know . I Did Thanks to Being A Backyard Mechanic. Very Important in Mechanics ! Learned Even More When Worked For ACE Hardware For A While . Thanks Scout .
AwesomeI didn't know what those markings meant but have seen them plenty of times. As an electrician I use nuts and bolts for supporting conduit and heavy electrical boxes but we don't use them as often as the other trades. I'm definitely going to check the grade of the hardware we order from now on.
Scoutcrafter thanks for the info on bolts and nuts. Great information. The bolt you had is a little like the ones my dad used to make for the H.K. Porter #2 and #3 forester tree limb cutters. The bolts that held the cutting blades to the handles would have about a 5/8" head with 3/8 shoulder and 1/4" threaded section. The unusual shoulder size may be as in the H.K. Porter cutters would be for a built in bushing to the bolt so the cutting blade would be able to ride up and down a section of the handle for leverage! Extremely unique!
@@ScoutCrafter that it is! The hard part is when you might break one or one is in bad shape. Unfortunately you can't go to a hardware store and get one! I wish my dad had taught me how to make them!
Good video. In some of my local hardware stores the Grade 5 and 8 bolts are available in UNC (coarse thread) and UNF (fine thread). A detail to pay attention to if you do not pick up the respective nut at the same time. I have been burned in the past getting a bolt and did not look at the bin to see it was a fine thread bolt only, then at home realising I do not have the fine thread nut. You restore some old tools so another detail is the potential old style thread form, e.g., Whitworth used on many Stanley-Bailey and other vintage hand planes. 55 deg included angle vs 60 deg for UNC and metric, but the bigger challenge is the unusual diameters and tpi. I have seen my share of vintage hand planes where someone attempted to replace a missing screw with UNC hardware. They may have forced the new screw in place, but it will not be a good fit. That bolt is a monster. I cannot imagine the size of the wrench for that beast. Dave.
Hi Dave! Whitworth!! All the guys working on older British motorcycles looked for Whitworth socket sets at the flea markets! LOL Another one is Starrett! All their threads are unique to them!!!!
I didn’t know the markings on nuts. FYI, the flat washers are known as cut washers because they are stamped out of a sheet. If you look closely one side has sharp corners and the other is kind of rounded. The sharp corner always goes down. If installed wrong the sharp corner digs into the bolt head & can cause stress, shortening the life of the bolt. I really enjoy your vids. Keep them coming.
Hi Steve! There is a lot of engineers that argue against that! First off proper washers shouldn't have a sharp edge... (their argument) they also feel that the washer if installed sharp side down can damage the surface of whatever you are trying to protect! It's funny to read the back and forth on this! =)
Great video! I’m a big fan of socket head cap screws, with big thick washers under their heads. They look absolutely badass! When I mount another one of my vises on a bench I will definitely use some black M12 or M14 socket heads. I need to make some diagonal braces for my workbench to stop all the swaying and flexing of the legs. I’m gonna replace all the bolts on it with partially threaded socket head M12 bolts, so that the unthreaded portions of the bolts are taking all the shear forces (it’s a commercially made workbench out of pressed sheet steel) put on them by the weight of the bench and the diagonal braces going into tension as they resist flex. Right now the edges of the sheet metal are sitting on the threads of the M10 bolts that the bench came with, and the bolts are a very loose fit in their holes. I tested it and the unthreaded shank of an M12 bolt is almost a perfect fit! I will definitely make a video of the mods I’m gonna make and show you👍🏻
Thanks for the bolt education. I have a very rusty old bolt dug up in the Brooklyn Navy Yard which is also 5 tpi. The shaft is only 2.50” but it weighs 5lb 6oz. Probably from a ship or piece of ship building equipment. I keep it as a decorative item.
When you started talking about bolts I figured it would be a good refresher, however I learned something new! All these years I never knew nuts also had grade markings. After watching this video I went out to the shop and looked at some nuts, sure enough!
Hi scout,interesting discussion on bolts, and their grading marks. Don't know if it's of interest to you, but uk imperial bolts were letter marked for grading, a good high tensile bolt started at letter ( R) which equated to 40 tons per sq ins ", every letter above that went up by 5 tons per sq ins" ,or below down by 5tons. As an aside when I was in the trade and we had to torque up castle nuts , if they didn't line up to fit the cotter pin/split pin we would remove nut ,very lightly grind off the back of it until the pin lined up at full torque. Best wishes Scout . Stuart uk.
Great stuff John every time I go to the flea market I can’t walk past a bucket Crete bag container of Anytime if it bolts in it but I didn’t know that the nuts are graded to learn something new every day 🧐
@Randy Bingham Over 50 years moving rocks from one place to another with trucks and all matters of equipment and yes. working in a rock polisher. I called it grinding instead of crushing. The bosses didn't like that but it was what it was. Helped set up the local one years ago after clearing and grading. At home thinking about how I ever survived. Never did any core drilling but helped on air tracks too so there WE go!
@@ScoutCrafter When the original crushing plant was set up it was generator powered and you stood on top of the jaw with no protection but a hard hat. I used to help the original operator that ran that same plant for 25 years and drove for 2+ hours one way to help get it set up here. Things were a LOT different then. If he broke a hammer handle (16# sheep nose) he was so catty he could jump over the back of the jaw and catch it as it came up the belt and he was post retirement age, in his 70's I think. It was some life. Pony motor start generator, D-8 I think. Nothing smaller. Starters that had wires to keep them engaged and no auto cut off. Wild!
Thx for explaining the imperial measure sistem but on the Dake press the 8.8 is the standard bolt in normal situations and on the press you want a soft maleabil (you dont have the posibiliti to acum8late a lot of presure in the bolt) bolt by destruction to not to explode like the hardened 10.9 and 12.9 are usuali black fosfor couted are the hardened and yes the the chainisium imports are usualy low as 4.4 and 4.8 you can bend by hand and strip easly also like brass nuts and bolts
The medium grade bolts are considered case hardened, that is supposed to have the best properties of both worlds, however in the application on the Dake is is strictly a shearing force.
the nuts and bolts you demonstrated are "removable fasteners". There are some types of bolts that are permanent fasteners. and the bolt that you showed as an example of a grade 2, was actually a screw. Screws and Bolts, there is a difference.
In the real world "screws go in wood and bolts go in metal" Partially threaded fasteners and Fully threaded fastener are terms for very few people. If you look at a "carriage bolt" the seal ones are fully threaded and still not a screw.. =D
I knew the markings but didn’t do the math (add two). Didn’t know the nuts were marked! Metric..... 8.8? Where did they come up with that? I was going to guess 10lbs on the nut! Shoulder bolts used a lot on engines especially the head bolts. Fascinating! Or fastenerating!!!! Love MMM’s!!
Bolts, machine screws...hehe not gonna start that! Didnt know the old school grade markings, seen the marks never been thought they had meaning, metric have a number on them, easy!
S.C. Thanks for all the great info on bolts... I thought you were going to forget to tell us the weight.. I was guessing 10 lbs.. S.C. Thx again for the great video.. Is Ben ok, I haven't heard from him in a while...
You should put that bolt next to the huge knife and when people drop by they'll wonder if their Lilliputians. By the way thanks for the info I really had no idea about the rating system.
Michael! You can pick up a over-seas made one very reasonable! Starrett are a bit pricy. I have both and they are both very good! www.amazon.com/Grip-Thread-Pitch-Gauge-SAE/dp/B004ROIU2A/ref=sr_1_10?crid=1Y7B28E15BL90&keywords=thread+pitch+gauge&qid=1572915333&s=hi&sprefix=thread+pitch+gauge%2Camazon-devices%2C145&sr=1-10
years ago a friend that was a fire man was ask if he and i could make fire hydrant brass fittings. up on reading up on those fittings. i found that when you past a 3 in and 4 inch hydrant sizes there isnt always a set standard.
Hi! Lots of the bolts in your video were actually set screws , a bolt is only partially threaded a set screw is threaded it's entire length . Regards Will
Thanks John my wife watches your videos with me and can you imagine the jokes I copped? Apparently I’m a grade 8 nut. Didn’t think I would learn much but I didn’t know about the ratings on nuts. Over the years I have noticed that a lot of the very high tensile nuts & bolts are finished in a flat black and was wondering if you know why. I’m thinking it may be to avoid hydrogen embrittlement from the plating process as the higher the tensile strength the more susceptible the metal to embrittlement. Any thoughts. Cheers mate, Stuart 🇦🇺
Hi Stuart ! Here in the States most of our hi grade bolts are still yellow zinc but that is a great observation because for years the higher grade socket or cap screws were always black!!! 🤔
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Awesome... i knew the different strengths but thats about it. I definitely didnt realize how the nuts were marked. Great video. Thanks for the education
Brad! Thanks so much for the suggestion!!!!!!
I’m glad ScoutCrafter was able to do this video also, Brad. This wasn’t exactly what I meant when I said you had ‘some screws loose’ though...😉
@@HardKnocksForge damn.... the saga continues
Hey scoutcrafter, In the hardware store where I work my job is ordering and maintaining the fastener aisle. Often times I get customers that come in to purchase bolts and nuts and I ask them what is the application. They give me the deer in the headlight look and say "I just need a nut and bolt". Then I have to explain about nuts and bolts. Sure wish I had a small screen where I could just turn on your video. Informative and not boring. Thanks,
Mike
You know Mike, one day I would love to get all of us together and flash mob your store! We will all come in and ask for Mike! 😃👍
You are right in asking the application, its very important and for safety reasons as Scoutcrafter mentioned. Imagine someone using a low tensile bolt on a car, truck suspension joint, or a lifting shackle.
@@mohabatkhanmalak1161 Yes, it could be really bad results if you need a grade 8 and you buy a grade 2 to replace it.
Good design practice is to remember that a nut and bolt is a very powerful spring. They work by clamping the parts together. In some applications the torque applied to the bolt is defined by how much the bolt is stretched by measurement with a micrometer. An example of this would be found in some engine connecting rod cap bolts.
Generally the nut should be softer than the bolt. This is so that the threads in the nut will deform to the bolt threads and permit a greater torque to be applied without the bolt failing. An example of this would be that some engine rebuild procedures require the connecting rod nuts to be only used once while the connecting rod bolts may be used twice before replacement.
Putting a bolt in shear is very bad practice. The failure will begin in the root of the thread followed by catastrophic failure. Drilling holes without adequate bolt clearance is to be avoided. Shouldered bolts are no help here. If the mating parts start to shift, it's likely that one bolt in the assembly will be absorbing most of the shear load and the bolts will fail in a chain reaction. If parts must by accurately located to each other, dowel pins, roll pins, keys or some other positive location method should be used.
Washers are generally made of a softer material so they will deform to the work so the loading from the bolt or nut will be spread out over a larger area. Some spring alloy washers are made in a conical section so that when crushed flat they are generating the desired clamping force. One caution: On cast iron, never use split spring washers as the sharp edge of the split may start a crack in the iron. On cast iron always spot face the casting's bolt holes so that the nuts, bolts, and flat washers will set flat on the casting and not crack the very brittle cast iron.
Cheers from NC/USA
Cotter pins in US .😎
Split pins in the UK.
Nuts and bolts are taken for granted but without them modern day life would be impossible!
Thanks Scout Crafter a very interesting subject.
Yep cotter pin is what holds the crank on ,on a bicycle 😁
@@jusb1066 😁 aye tis true .
@@paddrivers I still keep a cotter pin in my toolbox lol, not been hear a bicycle in ,30 years
@@jusb1066 I used one on a Peugeot gearbox on a clutch change recently.
cotter pins are similar to bolts but different...suppose it depends which side of the pond your on.
Yes indeed, but what is the shearing strength of that split pin?
Wow John, "School is in session!" The bolt class was spot on and awesome, Great stuff!
Semper Fi!
Were you the technical advisor on the film
"the Nutty Professor"
Lol,,,
Great stuff bud,,
Well there was a movie called bolt but it was about a dog,
While I alway enjoy your videos, I’m going to put this in the top five. It’s amazing how comprehensive you can be in just under 15 minutes. Thanks so much. 😀
All the information you need and nothing you don't.
Thanks so much Robert!
Fantastic job in teaching John. Amazing how many things we all tend to miss and or pass over in daily life. Yet how important these little markings are to the machinery and engineering we trust our lives to each day.👍🏻👏
I will now refer to you as “Professor Crafter”. Great teaching! ...Art
Great tutorial Mate!! You're even teaching this Old Dog new tricks!! Well done!!☺
Good video and loved the art work to explain/show the differences. Thanks for doing this.
Extremely well done! Bolt basics everyone needs.
Do i feel a similar show on drill bits coming?
Twist, Forstner, spade, hole saws, diamond, ceramic, titanium coated, carbide, jobber, aircraft, etc.
Thank you for caring so much about your audience!
Great information and well presented - thanks!
Super interesting video again! I'm going to re-watch it a couple of times to remember and understand our metric system on bolt grading. Your a great teacher and true mentor. Carry on and I look forward to the the next one. Thanks a lot John! (I bet that big bolt would look nice polished up)
I work on an Air Force base and had to look up some hardware for one of our trainers and got education on the different types of bolts. They call Allen head bolts internal wrenching bolts and hex head and 12 point bolts external wrenching bolts because of where the tool is on the bolt head. Bolts are actually called cap screws, they become a bolt after you thread a nut onto it. Great channel, always learn something new from it.
Hi Scott- YES! The guys with the pocket protectors love to get technical on what is or isn't a screw or a bolt- Basically a screw threads into something and a bolt needs a nut but in the real world a screw holds wood together and a bolt has a bunch of definitions.. They get all bent out of shape when they try to call it a carriage screw instead of a carriage bolt! =)
John, I love all your vids on the technical side of things. You make it so easy to understand. Keep up the great work. Jim
I enjoy all of your videos. I especially like the ones where I learn something. Thanks for taking the time to make them
Phenomenally interesting and I will never look at a humble bolt in the same way.
Not only was it interesting but helpful too! I have seen the markings on the nuts and bolts but I never knew what they represented until now. This will help me decide what kind on bolt I need for a project. Thanks for sharing this.
I've always wondered about the markings on bolts. Thanks so much!!!
Great hardware info today. As always you are a great teacher.
Thanks so much John!!!!
Love the information new & refresher, thanks for sharing John!
Great video..learned something new today. Thanks
I enjoyed that very much. Thanks for explaining everything so well.
Very interesting, loved the video. Thanks
Very informative lesson. I knew about how they grade bolts but never knew about the nuts. Thanks for the class!
Great info Scout, thanks my friend your the best.
Great info! Thank you.
Excellent video. Educational for sure!
Fascinating, the world of bolts. Thanks!
Excellent refresher Thanks
THANK YOU...for sharing. Very nice refresher course and very much enjoyed, so I guess I'll bolt for now.
I just came in from mounting a hi-lift jack to my roof-rack. After watching the video I went back out and checked, and sure enough the supplier had given me grade 5 bolts to survive the journeys on the corrugated bush tracks. Great info. The other marking that I have seen commonly is the notched nut. I know you will instantly know, but I am wondering how many of your viewers would know what that signifies.
The funny thing is the Hi-Lift incorporates a Non-Hardened bolt that acts as a shear pin! The one bolt you absolutely don't want to upgrade! LOL!!!! Great jack!
"The fascinating world of nuts and bolts" This had me lmao!! Scout I love how you still get so excited about all this stuff like a little kid!
Thank you John for the education! It amazes me how much engineering went into making different kinds/sizes of nuts n bolts. I have coffee cans full and now I can actually separate them by the types of hardness, ect.. I learn more from you and other TH-camrs! Again, I love and appreciate your channel. I'm in Wisconsin and I'm hoping to visit one of those steam shows and bump into you next year. I'd enjoy the heck out of chatting with you (not sure about my wife tho😉lol) She'd probably Thank you for my tool fetish!! Take care
Tommy that would be awesome!
I didn't know about the bolt and nut markings, and that is actually important information as you point out! Many will know this, but an excellent resource that's user-friendly in the shop is titled "Fastener Black Book" out of the Engineer's guides compiled by Pat Rapp - a great Aussie.
That was great information. I didn't know half of what you covered.
Holy crap this is so interesting! Learned so much! Thank you
I never knew there was so much to learn about bolts crazy fantastic lesson
John amazing stuff I’m off to check all my bolts now ha ha god bless take care
👏🎅🔩⚙️
What an interesting video 👍 Thanks for sharing.
Great show as usual 👍 😎🤠
Thanks, John - most useful 👍🏻🛠️
Thanks for another informative video. Now that’s a bolt!
This was really interesting and helpful. I never knew how to read the markings for the grade. Thanks for the great video.
Good show. I wondered if you were going to quiz folks about the hole in the big bolt. Glad you sneaked it in right at the end. Surprisingly, a lot of folks don't know what that's for. They are quite frequent in the aircraft industry. Most often on engines. Keep the shows coming.
Hi Stephen- What's really interesting is Safety wire!!!!!!!!!! =D THAT is cool!
That was VERY informative. Thank you.
great vid, very informative
Now we are down to the nuts and bolts of things. Really people should make copies of your illustrations and hang them on their shop wall. Just like the drill bit posters and others that were handed out free by dealers in the old days.
Hi Scout , Great Class for People Who Didn't Know . I Did Thanks to Being A Backyard Mechanic. Very Important in Mechanics ! Learned Even More When Worked For ACE Hardware For A While . Thanks Scout .
I always wanted to work in a hardware store!
@@ScoutCrafter A Great Job , Just Low Pay . I Liked Helping People looking for Right Tool or Bolt ! 😀
Great info! I only knew about the military markings of aircraft hardware before this video. Really cool. Good bolts have rolled threads, not cut.
Yes!!!!! Not only are rolled threads stronger but much smoother too! =D
Great video Scoutcrafter very informative
ha ha ha thats a BIG bolt, thanks for this informative & entertaining video. Thumbs UP !
Great classroom tutorial!👍
AwesomeI didn't know what those markings meant but have seen them plenty of times. As an electrician I use nuts and bolts for supporting conduit and heavy electrical boxes but we don't use them as often as the other trades. I'm definitely going to check the grade of the hardware we order from now on.
I need to gt a bolt like that for my class demonstrations. Always look forward to your vids my friend.
Scoutcrafter thanks for the info on bolts and nuts. Great information. The bolt you had is a little like the ones my dad used to make for the H.K. Porter #2 and #3 forester tree limb cutters. The bolts that held the cutting blades to the handles would have about a 5/8" head with 3/8 shoulder and 1/4" threaded section. The unusual shoulder size may be as in the H.K. Porter cutters would be for a built in bushing to the bolt so the cutting blade would be able to ride up and down a section of the handle for leverage! Extremely unique!
Lots of cutting tools have wonderfully unique fasteners holding them together! It really is an art!!!!!
@@ScoutCrafter that it is! The hard part is when you might break one or one is in bad shape. Unfortunately you can't go to a hardware store and get one! I wish my dad had taught me how to make them!
ScoutCrafter: I’m no expert on anything!
Me: Ears prick up and I get a pen and pad to take notes. Who knew bolts could be interesting!
Great video 👍
Great informative video on bolts ScoutCrafter!!
LOL You were laughing when I picked this up! =D Next the RR track! =D
Great video! I was alway confused about the metric sizes.
Good video.
In some of my local hardware stores the Grade 5 and 8 bolts are available in UNC (coarse thread) and UNF (fine thread). A detail to pay attention to if you do not pick up the respective nut at the same time. I have been burned in the past getting a bolt and did not look at the bin to see it was a fine thread bolt only, then at home realising I do not have the fine thread nut.
You restore some old tools so another detail is the potential old style thread form, e.g., Whitworth used on many Stanley-Bailey and other vintage hand planes. 55 deg included angle vs 60 deg for UNC and metric, but the bigger challenge is the unusual diameters and tpi. I have seen my share of vintage hand planes where someone attempted to replace a missing screw with UNC hardware. They may have forced the new screw in place, but it will not be a good fit.
That bolt is a monster. I cannot imagine the size of the wrench for that beast.
Dave.
Hi Dave! Whitworth!! All the guys working on older British motorcycles looked for Whitworth socket sets at the flea markets! LOL Another one is Starrett! All their threads are unique to them!!!!
I didn’t know the markings on nuts. FYI, the flat washers are known as cut washers because they are stamped out of a sheet. If you look closely one side has sharp corners and the other is kind of rounded. The sharp corner always goes down. If installed wrong the sharp corner digs into the bolt head & can cause stress, shortening the life of the bolt.
I really enjoy your vids. Keep them coming.
Hi Steve! There is a lot of engineers that argue against that! First off proper washers shouldn't have a sharp edge... (their argument) they also feel that the washer if installed sharp side down can damage the surface of whatever you are trying to protect! It's funny to read the back and forth on this! =)
ScoutCrafter I agree about proper washers but where can you find them outside of an aero-space supplier? ($$$.)
Thank you for another great Video. Was anyways wondering what the marks on the bolts were for when i lived in UK and Ireland.
Great video! I’m a big fan of socket head cap screws, with big thick washers under their heads. They look absolutely badass! When I mount another one of my vises on a bench I will definitely use some black M12 or M14 socket heads. I need to make some diagonal braces for my workbench to stop all the swaying and flexing of the legs. I’m gonna replace all the bolts on it with partially threaded socket head M12 bolts, so that the unthreaded portions of the bolts are taking all the shear forces (it’s a commercially made workbench out of pressed sheet steel) put on them by the weight of the bench and the diagonal braces going into tension as they resist flex. Right now the edges of the sheet metal are sitting on the threads of the M10 bolts that the bench came with, and the bolts are a very loose fit in their holes. I tested it and the unthreaded shank of an M12 bolt is almost a perfect fit! I will definitely make a video of the mods I’m gonna make and show you👍🏻
Aryan- Socket head or cap screws are very hard to begin with! They really are awesome!!!!!!
ScoutCrafter Countersunk is also nice, but you have to be dead-on with the location of the countersink, because that head ain’t moving!
Thanks for the bolt education.
I have a very rusty old bolt dug up in the Brooklyn Navy Yard which is also 5 tpi. The shaft is only 2.50” but it weighs 5lb 6oz. Probably from a ship or piece of ship building equipment. I keep it as a decorative item.
mercoid I always loved unusual and big hardware!
A lot I never knew about nuts and bolts. Very Interesting!!!
When you started talking about bolts I figured it would be a good refresher, however I learned something new! All these years I never knew nuts also had grade markings. After watching this video I went out to the shop and looked at some nuts, sure enough!
LOL- I think there are a lot more markings out there but we don't usually deal with them! =)
I didn't know I didn't know so much! Gotta say, I admire your handwriting!
Nate- I wish you could have seen my Dad’s handwriting. It was just so nice... thanks Nate!
Hi scout,interesting discussion on bolts, and their grading marks. Don't know if it's of interest to you, but uk imperial bolts were letter marked for grading, a good high tensile bolt started at letter ( R) which equated to 40 tons per sq ins ", every letter above that went up by 5 tons per sq ins" ,or below down by 5tons. As an aside when I was in the trade and we had to torque up castle nuts , if they didn't line up to fit the cotter pin/split pin we would remove nut ,very lightly grind off the back of it until the pin lined up at full torque. Best wishes Scout . Stuart uk.
Hi Stuart! That is fascinating! I never knew that! Thanks!!!!!!!
S.C. It's time to restore that bolt.. Maybe a metallic silver.. lol.. Great video..
Great stuff John every time I go to the flea market I can’t walk past a bucket Crete bag container of Anytime if it bolts in it but I didn’t know that the nuts are graded to learn something new every day 🧐
Ben! I have some beautiful hardware I will never use! Sad really,,, =)
Great video ScoutCrafter! You should have named your video, “I’m Nuts about Bolts” 😀
Im playing catch up on videos gotta love the night shift lol.
In used to be around stuff that big but no more. Reducing rocks can be interesting. Thanks, CS!
@Randy Bingham Over 50 years moving rocks from one place to another with trucks and all matters of equipment and yes. working in a rock polisher. I called it grinding instead of crushing. The bosses didn't like that but it was what it was. Helped set up the local one years ago after clearing and grading. At home thinking about how I ever survived. Never did any core drilling but helped on air tracks too so there WE go!
Lewie! There are some occupations that were so dangerous it amazes me that guys made it out alive! =)
@@ScoutCrafter When the original crushing plant was set up it was generator powered and you stood on top of the jaw with no protection but a hard hat. I used to help the original operator that ran that same plant for 25 years and drove for 2+ hours one way to help get it set up here. Things were a LOT different then. If he broke a hammer handle (16# sheep nose) he was so catty he could jump over the back of the jaw and catch it as it came up the belt and he was post retirement age, in his 70's I think. It was some life. Pony motor start generator, D-8 I think. Nothing smaller. Starters that had wires to keep them engaged and no auto cut off. Wild!
Good information! Could you discuss stainless hardware?
Thx for explaining the imperial measure sistem but on the Dake press the 8.8 is the standard bolt in normal situations and on the press you want a soft maleabil (you dont have the posibiliti to acum8late a lot of presure in the bolt) bolt by destruction to not to explode like the hardened 10.9 and 12.9 are usuali black fosfor couted are the hardened and yes the the chainisium imports are usualy low as 4.4 and 4.8 you can bend by hand and strip easly also like brass nuts and bolts
The medium grade bolts are considered case hardened, that is supposed to have the best properties of both worlds, however in the application on the Dake is is strictly a shearing force.
Awesome! Can we have a tour of your hardware storage?
Hello JM Here is a short view! th-cam.com/video/uY4zhiRxLUo/w-d-xo.html
Neat big ass bolt.My Pop use to work for Pan-am big bolts on 747's back in the day.
Alan! Aviation grade too! I bet they cost a small fortune!
Wow ! When you say bolts I think that small sized bolts,sir.... It's big HULK Bolt.... LOL...!!!
the nuts and bolts you demonstrated are "removable fasteners". There are some types of bolts that are permanent fasteners. and the bolt that you showed as an example of a grade 2, was actually a screw. Screws and Bolts, there is a difference.
In the real world "screws go in wood and bolts go in metal" Partially threaded fasteners and Fully threaded fastener are terms for very few people. If you look at a "carriage bolt" the seal ones are fully threaded and still not a screw.. =D
I like the big bolt. Like to see you make a giant nut and cotter pin for it. Would be a great video.
I knew the markings but didn’t do the math (add two). Didn’t know the nuts were marked! Metric..... 8.8? Where did they come up with that? I was going to guess 10lbs on the nut! Shoulder bolts used a lot on engines especially the head bolts. Fascinating! Or fastenerating!!!! Love MMM’s!!
Aaron! The bolt seems really heavy when you lift it! I ordered a nut on ebay! $12! More then the bolt! LOL
Great info. Now how old do you think are the square head bolts? I have a few and I love their old shape.
Hello Brans... I am a big fan of square head bolts and nuts! They are stronger and actually better then their hex counterparts! I'm with you!
Nice bolt.
Bolts, machine screws...hehe not gonna start that! Didnt know the old school grade markings, seen the marks never been thought they had meaning, metric have a number on them, easy!
There was always a screw/bolt tamato/tomato thing so now they just say Fully threaded faster or Partially threaded fastener! =) Everyone's happy! =D
Great info. I didn't know a lot of it. Any thoughts of fabricating a nut for the big bolt?
I'm ordering one on eBay!!!! Cheaper then buying the hex stock! LOL
@@ScoutCrafter Ha!
Lunch time just got better!
Great video the topic was very riveting. I have been rebuilding my porch if I put a handle on it can I use that as my entry?
LOL- Be careful your taxes don't go up! =D
I'll see if I can get a hammer done tomorrow gust got in
I always wondered about those lines! Now I know what they mean. I wonder why they decided on the “add two” rule?
S.C. Thanks for all the great info on bolts... I thought you were going to forget to tell us the weight.. I was guessing 10 lbs.. S.C. Thx again for the great video.. Is Ben ok, I haven't heard from him in a while...
Gary Jones You we’re close! That bolt is heavier then it looks! Ben is good he is posting a mallet video on Wednesday!!!! 😃👍
Thanks Scout. Again, I learned a lot today. Can you turn out a nut for that big bolt with your lathe ? Or is it too big ? - Kathie
artsietopology Kathie, I would have to start out with a piece of 2” Hex stock! 😳 That would be pricy! I am going to look on eBay for a nut!!!
You should put that bolt next to the huge knife and when people drop by they'll wonder if their Lilliputians. By the way thanks for the info I really had no idea about the rating system.
LOL!!!!!!!!
Great info on bolts. I’d like to find one of those thread gauges.
They are still sold
Jusb1066 thanks.
Michael! You can pick up a over-seas made one very reasonable! Starrett are a bit pricy. I have both and they are both very good! www.amazon.com/Grip-Thread-Pitch-Gauge-SAE/dp/B004ROIU2A/ref=sr_1_10?crid=1Y7B28E15BL90&keywords=thread+pitch+gauge&qid=1572915333&s=hi&sprefix=thread+pitch+gauge%2Camazon-devices%2C145&sr=1-10
ScoutCrafter thanks
Are you nuts ? Lol 🙏
years ago a friend that was a fire man was ask if he and i could make fire hydrant brass fittings. up on reading up on those fittings. i found that when you past a 3 in and 4 inch hydrant sizes there isnt always a set standard.
They always tried to deter theft by making them useless in the normal world! =D
MOE i never thought about the theft thing.
Made a cool one. Where do I send my pics to?
bicycleguy@aol.com
Hi! Lots of the bolts in your video were actually set screws , a bolt is only partially threaded a set screw is threaded it's entire length . Regards Will
Hi Will- Partially threaded Fasteners and Fully threaded Fasteners... Set screws or Grub Screws are a whole different animal! LOL
www.leytonfasteners.co.uk/bolt-setscrew-information/
I think it's all down to us using different terms !
MMM is school in session. Thanks!
Thanks John my wife watches your videos with me and can you imagine the jokes I copped? Apparently I’m a grade 8 nut. Didn’t think I would learn much but I didn’t know about the ratings on nuts. Over the years I have noticed that a lot of the very high tensile nuts & bolts are finished in a flat black and was wondering if you know why. I’m thinking it may be to avoid hydrogen embrittlement from the plating process as the higher the tensile strength the more susceptible the metal to embrittlement. Any thoughts. Cheers mate, Stuart 🇦🇺
Hi Stuart ! Here in the States most of our hi grade bolts are still yellow zinc but that is a great observation because for years the higher grade socket or cap screws were always black!!! 🤔