Tow Hooks

[Agriv8r]

very capable of pulling just about anything out of the whatever

[hummer_metal]

Hence the bolts go in half an inch less.

I am suprised, a little, that nobody else here picked up on this comment above.

The first thing you need to do before you off road thinking you got the rig, is to replace those bolts that are .500 of an inch too short.

The bolts might shear off under load, the tensiles strength is gathered over the distance of how deep the bolt is in. Meaning all the threads are working together. Hey don't ask me I am not an Engineer, I just know this stuff.

Now that you have, lets say its a 1/2 13 UNC thread, could be 5/8 11 UNC I don't know, but you have 5 or 6 less threads to hold the strength.

Before you think you can run to your local DIY store to replace them, try a auto parts store and make sure they are GRADE 8 bolts. Anything less, and you will be drilling out broken bolts and re-tapping the holes. Which btw will have even less thread area to hold because re-tapping only allows you maybe if your lucky 60% thread, where as now its about 85%.

[Desert Dan]

hummer_metal
That crossed my mind when I saw them putting on my brush guard at the dealer.

I hope the bolts are long enough with the factory brushguard?

[f5fstop]

Rest assured, if installed correctly, the factory brush guard will not affect the tow hooks, or crash worthiness, including the SIR discrimination sensor in the front of the vehicle.
Before GM can sell any factory authorized accessories, they must certify them for crash worthiness, including the use around air bag sensors.

[H3 Hummer 64]

Well StarsnBars has actually tried, then I think it should be fine. But does anybody know if the hole that the bolts screws into are as deep as the bolt or does the bolt hang out the back? If it hangs out the back then you're not loosing any strenght because those treads aren't gripping on anything anyway.