I have never heard the true name for what Aaron call “Kepts-but” or “K-Lock”. Don’t forget having a good selection of “Star Washers” both internal and external. These are great for restoration of older vehicle for ground as well as the positive side. The cut or dig into primer & paint someone used to spruce up their investment. I do everything but electrical is my passion. Voltage drop is my weapon of choice guys. It does not lie while the circuit is on, the lower you can get the better for everything electrical. The “Star Washer” used on the ground side will cut past rust, on frame, engine, cab, bed if a truck and tailgate if they install solenoids that call “Poppers” when they shave a handle for looks or security! The serrated nut is more commonly found on imports. I have always called the the “Secondary Lock Nuts” simply deformed nuts. They have an incredible amount of “Break Away” force required when used on the exhaust. These require a high temp anti-seize applied to the stud in this application. While large (17mm) and no straight socket access, when using an impact swivel, socket, 1/2” long extension and breaker bar to remove off the exhaust manifold, it always broke loose with such force that all wrenches hit the floor. I was always shocked that my SnapOn products did not break after picking up to examine! Just a simple case of over engineering on the Isuzu. Nissan actually placed a bead of RTV around the bell housing of the 5 speed manuals used in the Pathfinder. Why? Water would come in easy around the starter. Duuuh! But I didn’t build it, only there to fix it. I will say that Isuzu was the only company to send an engineer into each dealer to spend 3 days talking to the tech about what problems they came across or have seen. Very good video guys to review the components that are out their, names and smooth it over with just enough technical SAE or ISO discussion! The rising generation is lacking in this knowledge at tech schools because I guest-hosted 2-day classes for ACDelco in 13 different technical community colleges. Some where good to decent! I say this as the instructors have not wrenched on a vehicle since Nixon was president. They had limited knowledge on serial data systems and how they worked. I don’t care what color next years shock absorbers were, but if they contained a “Mageto Reological Fluid” developed by Delhi in the 60’s, but had no application. This was new for the 2004 Corvette guys! The fluid is like an oil with microscopic iron balls that stayed suspended for decades. Acura first used it in the front motor mount. With upshift, downshifts on a dynamometer, they simple wrote software to control the soft or firmness of the mount to make it smooth! Remember, martini shaken, not stirred! But GM’s approach was a sensor on all four corners of the suspension with reaction times of GM Local Area Network (Serial data used on high speed computers for years, like IBM’s WATSON first used to defeat a human on Jeopardy. Now an amperage sent thru two wires could change the fluids viscosity from water to 90 gear oil in 2 micro-seconds! (Ms) almost real-time dampening. It was unbelievable as I took turns driving one with 56 other ADCelco market area service managers. Way cool then, but now, almost everyone is using this technology paying per strut or car, used in stability control w/ABS. Traction control is just ABS working backwards. Guys, always great learning and review! Thanks for the efforts!
Dean, you certainly have a lot of experience and it’s a real compliment to hear you’re enjoying the show. The nut with an assembled external tooth lock washer is called a “KEPS Nut”, which is a registered trade mark from ITW Shakeproof. The generic term frequently used is a K-Lock Nut. -Randy
Do u recommend a specific style lock but for different bolt sizes? Or fine or coarse threads? I am curious how the scale of bolt sizes effect the lock nuts ability retain itself
I have never heard the true name for what Aaron call “Kepts-but” or “K-Lock”. Don’t forget having a good selection of “Star Washers” both internal and external. These are great for restoration of older vehicle for ground as well as the positive side. The cut or dig into primer & paint someone used to spruce up their investment. I do everything but electrical is my passion. Voltage drop is my weapon of choice guys. It does not lie while the circuit is on, the lower you can get the better for everything electrical. The “Star Washer” used on the ground side will cut past rust, on frame, engine, cab, bed if a truck and tailgate if they install solenoids that call “Poppers” when they shave a handle for looks or security! The serrated nut is more commonly found on imports. I have always called the the “Secondary Lock Nuts” simply deformed nuts. They have an incredible amount of “Break Away” force required when used on the exhaust. These require a high temp anti-seize applied to the stud in this application. While large (17mm) and no straight socket access, when using an impact swivel, socket, 1/2” long extension and breaker bar to remove off the exhaust manifold, it always broke loose with such force that all wrenches hit the floor. I was always shocked that my SnapOn products did not break after picking up to examine!
Just a simple case of over engineering on the Isuzu. Nissan actually placed a bead of RTV around the bell housing of the 5 speed manuals used in the Pathfinder. Why? Water would come in easy around the starter. Duuuh! But I didn’t build it, only there to fix it. I will say that Isuzu was the only company to send an engineer into each dealer to spend 3 days talking to the tech about what problems they came across or have seen.
Very good video guys to review the components that are out their, names and smooth it over with just enough technical SAE or ISO discussion!
The rising generation is lacking in this knowledge at tech schools because I guest-hosted 2-day classes for ACDelco in 13 different technical community colleges. Some where good to decent! I say this as the instructors have not wrenched on a vehicle since Nixon was president. They had limited knowledge on serial data systems and how they worked. I don’t care what color next years shock absorbers were, but if they contained a “Mageto Reological Fluid” developed by Delhi in the 60’s, but had no application. This was new for the 2004 Corvette guys! The fluid is like an oil with microscopic iron balls that stayed suspended for decades. Acura first used it in the front motor mount. With upshift, downshifts on a dynamometer, they simple wrote software to control the soft or firmness of the mount to make it smooth! Remember, martini shaken, not stirred!
But GM’s approach was a sensor on all four corners of the suspension with reaction times of GM Local Area Network (Serial data used on high speed computers for years, like IBM’s WATSON first used to defeat a human on Jeopardy. Now an amperage sent thru two wires could change the fluids viscosity from water to 90 gear oil in 2 micro-seconds! (Ms) almost real-time dampening. It was unbelievable as I took turns driving one with 56 other ADCelco market area service managers. Way cool then, but now, almost everyone is using this technology paying per strut or car, used in stability control w/ABS.
Traction control is just ABS working backwards.
Guys, always great learning and review! Thanks for the efforts!
Dean, you certainly have a lot of experience and it’s a real compliment to hear you’re enjoying the show. The nut with an assembled external tooth lock washer is called a “KEPS Nut”, which is a registered trade mark from ITW Shakeproof. The generic term frequently used is a K-Lock Nut.
-Randy
Do u recommend a specific style lock but for different bolt sizes? Or fine or coarse threads? I am curious how the scale of bolt sizes effect the lock nuts ability retain itself