bolt shank/thread question

[supersize75k5]

On the buggy I mounted the coil overs on 1/2 inch thick tabs.. acutally it is two 1/4 inch tabs on each side but they are of different design and gave me a nice surface area for weld/beef

well now I cant find a bolt with the right shank, every bolt I try is way too long to get the shank I need and I would have to put some serious washers on, every other bolt that is the right size would have some of the tabs resting on the threads and not the shank..

soooo dont worry about it, or be getto and stack washers or get some really thick ones.

errrrrrrrr

 

[ryoken]

it would be best to have it on the shoulder.. technically it is called a "shoulder bolt"

try mcmaster carr, they generally have everything...

 

[supersize75k5]

will do, I have tried al the local places, grainger, hardware stores and copperstate

 

[NewMexK5]

I second on trying Mcmaster. We have an account with CopperState and we still get the odd ball things from Mcmaster-Carr when needed.

 

[Jason4x4]

you could get a rod the right size and cut it to length, then tap both ends and put a nut on both sides.

 

[supersize75k5]

you could get a rod the right size and cut it to length, then tap both ends and put a nut on both sides.

you like to do things the hard way

 

[GruntHunter]

Bolt shoulder custom length

Why don't you just take the bolt with the longer shoulder and run a die down it to get the threads where you need them ?

 

[rdn2blazer]

What length shank do you need exactly? you should be able to get fairly close. I use thick washers anyways on everything. I dont even buy standard thickness washers. How many washers are we talking that you would have to stack?

Also a real "shoulder bolt" is not what you want. A standard grade 8 bolt is NOT a shoulder bolt. Its a Hex Head Cap bolt. A shoulder bolt has a ground Diameter its like a Dowell pin, and a thread size that is under the Ground shank size. A 1/2 in shoulder bolt will generally have a 3/8 thread, and ther shank length is not as varied as a standard bolt is. We use Shoulder bolts in the machining industry to locate jigs and fixtures, or Hold down parts being machined, they acurately locate parts. There like a Dowell pin with a threaded end and a head with an Allen socket to tighten it with. They have other kinds of head to drive too but usually its an Allen socket.