Clearance hole and tap size calculation
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- เผยแพร่เมื่อ 23 ส.ค. 2024
- Metric and imperial. Calculations omit crest and root rounding heights, but approximate well enough if you do not have a drill size chart. Also good for learning thread geometry terms.
Thank you again for one more exciting video on thread geometry mathematics. This indeed helped me to understand the basics of thread geometry and from now on I will be able to approximate tap hole sizes using your methods. Thank you for sharing your knowledge :)
Your video is very informative. Thank you for helping me understand thread geometry and the units used (tpi and pitch) in making proper threads. Your tutorial will help me to make the custom rf connectors I need for a wifi project.
Thank you! Fantastic information exactly what I was looking for!
Great video, thank you for the lesson!!!!
You have 20mm as your Diameter? Actual size would be between 19.96-19.62. My calculations give an exact bore of 17.244 or a drill size of 17.5. The Drill size comes from a 'rule of thumb' that Nominal size of bolt less Pitch = Drill size. If I was to bore the hole on a lathe, my Diameter would be 17.244 or .679 Thou.
Awesome!!! Thank you so much for sharing your knowledge!!
Love from India ❤❤❤
I love those calipers!
Excellent tutorial, thanks....subscribed
Thank so much for your great details video
Nice explanation.Thanks a lot!
Thanks a lot completely understand but seeing that I am new to machine trades. I am still a bit confused, so I have a question does this applies for external threading on a lathe?
+Dorian Charles This geometry applies to every 60-degree screw thread: Internal, external, metric, inch-based. Does not apply to other angles (Whitworth, ACME).
How involved one might be with threads could vary from eyeballing the diameter of a bolt against a drill bit but it could crash an entire aircraft (British Airways Flight 5390 crash, June 10, 1990)
I want npt internal thread major and minor dia chart
Here's the link if anyone wanted to know
en.wikipedia.org/wiki/Unified_Thread_Standard
This is also probably useful
en.wikipedia.org/wiki/List_of_drill_and_tap_sizes
great video!
It's so complicated 😫. Anyway good video.
Thanks for watching!
Sir, @ 10:16, when u did 20-[(1/8)+(1/8)]...........shouldn't it be 20-[(1/8)+(1/4)]?......u showed the geometry on your phone, it said the top cut is (1/8)H and bottom cut is (1/4)H......
Root truncation has nothing to do with clearence hole sizes at 10:16, follow the video. Twice the crest truncation matters only.
apprenticemath yes sir... I figured it out.... I contacted my professor.... Thanks again.
Someone please explain to me why this matters!! Why cant you just screw the damn thing into the matching nut?? I dont get it? Why would i have to do this math?
Only when removing extra metal (generous oversized hole) weakens the structure. Rare event for most cases.
holy cow.... just use a drill bit 1 or 2 sizes smaller than the hole needing to be tapped..... Rocket science!!
... and that makes a what % thread triangle overlap? 50%? 70%? Yea, I`m sure it`ll hold up the steering rod end ... Ayrton Senna dead Formula 1 driver agrees with me on this.
Remind me not to strap into YOUR rocket. And I fly combat rescue!
I didn`t invent math or safety standards, good luck with your life.
Just sticking pins in my eyes
K
please describe in india with indian hindi language we need u
How do I do that, I don`t know any hindi
who the hell uses imperial these days except america and 2 other countries in the world , U.S., Liberia and Myanmar ,the rest of the world uses metric and it makes me laugh when i hear an american say imperial is the standard size lol ,no its not ,only america and liberia and myanmar use it ,how is that the standard size come on usa get with the rest of the world
At the time they standardized length measures, it was typical to just call it standard inch/yard, for every country.