What size bolts are needed for the rear bumper on my 95 K1500?

[Axewhlder]

I bought my truck and it had a roll pan on it. I can't stand it. Today I picked up a used rear bumper but it didn't include any of the bolts. Does anyone know what size and type of hardware I'll need to mount the bumper to the body? Thanks.

 

[thz71]

As big as you can fit.

 

[df2x4]

LMC has most of the hardware if you don't feel like messing around at a fastener store, might be a little on the expensive side though.


http://www.lmctruck.com/icatalog/cd/full.aspx?Page=26

 

[Ironhead]

You could go to a self serve wrecking yard, and pull a fastener or two from a similar truck, then take them to a fastener shop or a good hardware outlet, and buy some.

 

[Axewhlder]

LMC has most of the hardware if you don't feel like messing around at a fastener store, might be a little on the expensive side though.


http://www.lmctruck.com/icatalog/cd/full.aspx?Page=26

Being that I've never taken or put on a rear bumper on one of these trucks will the 22 pc bolt kit work? Thanks again..

 

[Jrgunn5150]

The bolt heads are 18mm. The only people I've ever seen use such a size is GM. It's very, very close to 3/4

 

[Ironhead]

Why why why! Almost every socket set ever sold, in metric, includes a 17 mm and a 19mm, but NOT an 18mm. Does the 3/4 fit closely enough so that it does not ruin the bolt head or the nut?

Nuther question: is it worthwhile trying to undo old bumper bolts to get a used bumper off a donor vehicle, or is it just better to use a torch or angle grinder. I'm not thinking of re-using the bolts, just trying to be practical.

 

[Jrgunn5150]

Why why why! Almost every socket set ever sold, in metric, includes a 17 mm and a 19mm, but NOT an 18mm. Does the 3/4 fit closely enough so that it does not ruin the bolt head or the nut?

Nuther question: is it worthwhile trying to undo old bumper bolts to get a used bumper off a donor vehicle, or is it just better to use a torch or angle grinder. I'm not thinking of re-using the bolts, just trying to be practical.

Because it's a non-standard size, I've only ever seen 18mm bolts on late 80's up GM products. On my Trailblazer, the swap bar end link bolts are 18mm with a 7mm allen key in the middle, another non-standard size lol. I really don't know why they go out of their way to make thing's difficult.

18mm is .7086, so 3/4 will sometimes fit, depending on how much crud is on there. I finally gave in and bought a deep, shallow, and ratcheting wrench individually just to have the damn size.

When I bought my stepside, it came with another bumper, I used my impact to zip the old off and new on. After some JB80 and a wire wheel my bolts looked fine, so they are back on there. I could have done it with a breaker bar and ratchet attachment for it in a yard with mild effort I suspect.