I'm pretty sure that they are plain old 5/16 bolts....with fine threads (so 5/16-24 UNF). A lot of the body parts on these trucks was bolted together with 5/16 fine thread bolts....there are a few places with 3/8" bolts...like the bolts that hold the inner fender to the radiator support...those are also fine thread bolts.

 

I can look it up when I get home this evening.

 

I was actually talking about the large bolt that fits through spring...

 

Thanks I had sent an email. Looks like getting it threaded would cost more then buying one..

 

Just as I suspected, and remembered, the bolt is of special construction. It has a mushroom tip at the bottom in order to engage the hood latch.

As per the parts manual (see pictures below), it's part # 1C-16929 and is 3.66" long. The 48-50 uses the same bolt, but it's 5" long and has a part # 7C-16929. The 48-50 also utilizes a separate 7/16"-20 nut. The nut on a 51-52 hood assembly is welded to the hood. I would assume that it's also a 7/16"-20 thread.

I doubt that you'll find this special bolt at your local hardware or auto parts store. If you're set on finding an original, then I suggest trying Green Sales Co in Ohio and/or Antique Auto Supply in Arlington, TX. Otherwise, I'd spend the money and have the existing bolt re-threaded to the correct specs.

 

They really aren't that different from dozens of other vehicles that use that kind of latch. The head on mine measures 1-1/8" diameter at the widest part, and the bolt needs to stick down from the underside of the hood at least 2-1/4", so is probably a 3" overeall length. It's useless without the spring and cup to match tho, so grab them too.

 

Have the assembly just have a messed up bolt that needs re threaded but thought I might could find for less than the machine shop wants for re threading this one.

 

How much are they charging? It's probably less than the time it would cost you to find one. Check the thread inside the nut. Maybe it's bad as well.

 

47 an hour but a friend called and had a die for it.. So I will do it this weekend.

 

Can anyone measure the distance from edge of window to edge of lift channel? Trying to get it in but having issues with the alignment. Thanks
Ken