Replace with Grade 8 bolts of the same size and thread pitch, use anti-seize on them. You don't want to use stainless steel on bumpers, they won't rust, as fast, but they do not have the shear strength that Grade 8 bolts do, 15,000# for a 1/2" bolt. NAPA is an excellent source for Grade 8 bolts.So to reopen an old thread, I found that the 1.5*0.5-13 bolt did fit but the choices at Home Depot were zinc or galvanized, no stainless steel. Also, I have no idea if they're grade 8 bolts. So my question is what material should I be looking for here? The bumper I'm planning on ordering is a Westin 42-2005 Trailblazer Series Black Winch Mount Front Bumper for Wrangler from Amazon. I have a TYGER on the back and this looks like it will go well with it for ca. $80 less.
I should note that the ones I got from TYGER had some sort of black coating.
X2. And don't worry about the gold hex head, you'll get used to it. Once I bent one of the grade 8 bolts when the tow hook was pulled hard sideways. It bent really bad but didn't give out.Replace them with 1-1/2 to 2" Long 1/2"-13 UNC Grade 8 Hex head bolts, they'll make life easier later on if you ever need to remove them..