Eye bolts for harnesses - F-Body Road Racing and Autocross Forums

I just finished installing a 6 pt rollbar and harnesses and have a question about the eye bolts I'm using (for quick disconnect type snap ins). It seems when screwing them in to the stock belt locations they are a little wobbly until they are tight, and one that I was tightening (with a screwdriver through the eye - maybe a little too much torque) spun on me. But when I put the stock bolt back in it still snugged down very tight. So it seems that the diameter of the eye bolts is a little smaller than the stock bolts and the threads seem a little finer too when looking at them. Anyway I wrote the guy I got them from (soloracer.com - local) and he says they are the same ones used by Bell, G-force, etc, they are all the same, and has never had a complaint, except Porsche guys have to use some kind of adapter with them(?). I assume most serious folks here are using regular bolt ins and not snap ins/eye bolts, but does anyone using eye bolts know of some that fit better? I can get these fairly tight, but clearly they are not the same bolt as stock-
Thanks - don't know why I'm worried, its only the seatbelt (IMG:http://www.frrax.com/rrforum/style_emoticons/default/huh.gif)
Pat

SSTAT View Member Profile	Aug 24 2004, 05:35 AM Post #1
Advanced Member Group: Advanced Members Posts: 545 Joined: 19-June 04 From: Zanesville, Ohio Member No.: 369	I just finished installing a 6 pt rollbar and harnesses and have a question about the eye bolts I'm using (for quick disconnect type snap ins). It seems when screwing them in to the stock belt locations they are a little wobbly until they are tight, and one that I was tightening (with a screwdriver through the eye - maybe a little too much torque) spun on me. But when I put the stock bolt back in it still snugged down very tight. So it seems that the diameter of the eye bolts is a little smaller than the stock bolts and the threads seem a little finer too when looking at them. Anyway I wrote the guy I got them from (soloracer.com - local) and he says they are the same ones used by Bell, G-force, etc, they are all the same, and has never had a complaint, except Porsche guys have to use some kind of adapter with them(?). I assume most serious folks here are using regular bolt ins and not snap ins/eye bolts, but does anyone using eye bolts know of some that fit better? I can get these fairly tight, but clearly they are not the same bolt as stock- Thanks - don't know why I'm worried, its only the seatbelt (IMG:http://www.frrax.com/rrforum/style_emoticons/default/huh.gif) Pat

slowTA View Member Profile	Aug 26 2004, 01:46 AM Post #2
Experienced Member Group: Advanced Members Posts: 2,290 Joined: 4-May 04 From: Kenvil, NJ Member No.: 331	I think most of the eyebolts are zinc plated steal for protection. Regular stainless hardware is notoriously soft, somewhere around grade 3 or maybe 5. I've heard that grade five is strong enough for belts, but please don't quote me on that. I have no idea how ARP gets away with making their stainless so strong, it boggles my mind. A 6000 lb load rating really doesn't say much since that is telling you about the static loading, I doubt you make them tight enough to hold 6000 lbs all the time. The shock loading will be higher but you should pay more attention to the pressure the material can handle, in psi. FYI, I drilled holes in my floorboards and used the large washers that came with the kit. I know the NHRA requires large plates to be welded in also.