Confirm Bolt Size
Thread Starter
Instructor
Joined: Jan 2006
Posts: 240
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From: San Antonio TEXAS
Confirm Bolt Size
Is the bolt that mounts the top of the shoulder harness a 12mm 1.75
size. Stuck at work now
and can't research too much and can't find in the archives. I found references to the Torx size but I need the thread and pitch.
Any help apperciated.
size. Stuck at work now
and can't research too much and can't find in the archives. I found references to the Torx size but I need the thread and pitch.Any help apperciated.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
The GM parts listing does not list the thread size on that bolt. As you now it is a special, hardened steel bolt with a smooth shank and a Torx "button-head". The thread diameter mikes at 11.8mm so that would mean it's a 12mm (nominal) bolt. I don't have a pitch gauge, so I don't know for sure what the thread pitch is however.
You may just need to remove one and run it through a known nut to confirm.
HTH
You may just need to remove one and run it through a known nut to confirm.
HTH
Thread Starter
Instructor
Joined: Jan 2006
Posts: 240
Likes: 0
From: San Antonio TEXAS
Thanks, I couldn't get to the parts list here at work. Just wanted to double check that it wasn't some unique size. I miked the bolt last night with the same results as you. I got 1.75 on the pitch gage. I didn't have another nut or bolt to test it so i tried to run a die over the bolt but needed too much force to get down to the threads, but like you said, it is hardened. I wanted to order parts, a male clevis and rod ends to put a removable bar in that location. I'll stop and get a 12-1.75 on the way home to make sure. Thanks alot.
Team Owner
Joined: May 2001
Posts: 36,836
Likes: 244
From: Dear Karma, I have a list of people you missed.
St. Jude Donor '08-'09-'10-'11-'12-'13-'14-'15-'16
Thanks, I couldn't get to the parts list here at work. Just wanted to double check that it wasn't some unique size. I miked the bolt last night with the same results as you. I got 1.75 on the pitch gage. I didn't have another nut or bolt to test it so i tried to run a die over the bolt but needed too much force to get down to the threads, but like you said, it is hardened. I wanted to order parts, a male clevis and rod ends to put a removable bar in that location. I'll stop and get a 12-1.75 on the way home to make sure. Thanks alot.
