Front Shock Absorber Bolt Replacement

[Shekept]

Anyone have a source for the 5/16-18 bolts for the front shocks? They have captive washers and are discontinued according all sources I’ve checked. McMaster and MSC have nothing.
Dorman sells them with no washer. I may end up with these and some sort of tight tolerance washer.
I edited the size. My mistake. Using a thread chaser I misread.

 

[Ozymandias]

I would use a flange bolt instead, something they haven't had back then 40 years ago.
They have replaced the bolt & washer setup and are also self locking.

 

[Shekept]

I would use a flange bolt instead, something they haven't had back then 40 years ago.
They have replaced the bolt & washer setup and are also self locking.

View attachment 140213

Thanks! Now that I know the right size this should be easier! For what it's worth I used an old trick of heating the original bolts (not too hot!) and dipping them in old motor oil. Puts a black oxide finish which isn't "forever" but at least they look better. lol

 

[Shekept]

Did a partial thread allow enough purchase on the captive nut? I'm going to measure this because the McMaster-Carr 2" flange bolt is partially threaded and the flange is around 17mm. The original captive washer is about 19mm. The photo illustrates plenty over coverage.

 

[Shekept]

 

[Ozymandias]

That's absolutely good to go.

By the way you can get these flange bolts at every Home Depot or ACE by the piece.

 

[Shekept]

Torque on these is 200 inch pounds seems awful low but that's what I've read. I've see this rounded up to 17 lb/ft as it's actually 16.66.

 

[Ozymandias]

There isn't lot of force on these bolts, the factory shocks aren't really strong.

 

[Shekept]

One more thing. Two of these dropped out of the spring perches when I removed the shocks. They are shot to pieces but I wondered where they may have come from. The old shock still had their washer and bushings. May these were part of that but no clues here.

Thanks!

PS: Got it all buttoned up and working fine. Did the TV cable adjustment over the weekend. Big difference.

 

[Ozymandias]

Whats the size of them? Sure looks like bump drop or so.

 

[Shekept]

About 1" at the widest point. Hole is 1/2". The Upper and Lower bump stops are intact and in remarkable condition.

These more or less fell out when the old shocks were removed. Found them on the floor after the fact.

 

[BigPapa]

They look like the bumpers that are on the shaft of some shocks.

 

[Shekept]

They look like the bumpers that are on the shaft of some shocks.

Thanks. The shocks on the truck were pretty decrepit. They weren't shot but they were tired.