odin
1/2 ton status
Quick question. I need new spring center pins for the rear of my 79 GMC.
Does anybody remember what size they are?
Does anybody remember what size they are?
CK5
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What size are the spring center pins??
- Thread starter odin
- Start date
If I recall correctly 3/8
odin
1/2 ton status
Thanks. That sounds right. I couldnt remember and wanted to pick up a pair before taking the truck apart.
You can use 3/8" fine thread grade 8 bolts of the correct length, and just round the heads off. I put the shaft into a drill, then run them up against the bench grinder -- the poor man's lathe 
-- A
-- A
odin
1/2 ton status
Thats a killer idea!
Jah, those are easier to find -- hardware store instead of finding a good auto or 4x parts place -- so I keep a pile on hand when I'm doing suspension changes.
-- A
sandawgk5
3/4 ton status
3/8 cap screws (allen type bolts) fit nicely also and do not require grinding. They are also easy to get tightened with out vicegrips
.
Dik
.Dik
robert97dodge
1/2 ton status
I always heard it is not good to use a grade 8 bolt. A grade 8 bolt will snap instead of bending. I have pulled out many tie bolts that were all bent up where a grade 8 bolt would of just broke instead of bend.
sandawgk5
3/4 ton status
Wrong. Where a lesser grade will deform the grade 8 will still look new. If you get to the point where you are bending grade 8 a grade 5 or less would have long ago failed.
The increased grade increases the overall strength of the fastener it does not just change the ductility or hardness of the fastener.
Dik
The increased grade increases the overall strength of the fastener it does not just change the ductility or hardness of the fastener.
Dik
sandawgk5
3/4 ton status
91sseries2
Newbie
man..that was some really good info.
sandawgk5
3/4 ton status
Allen head cap screws are general made to F-F-86 standard which is a grade 8 equivalent to regular bolts made to Mil-STD-1222J.
Dik
