| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,204 Posts1,057,298 Members48,467 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
| | THANKS!
For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2001 Posts: 3,617 Moderator | | Moderator Joined: Aug 2001 Posts: 3,617 | Are you sure it's not a 9/16-18 thread? There is not much difference in the diameter and if you used a tape measure on a rusted bolt, it would measure about 1/2 dia.
Just my thought as I looked in my 1940, seventh edition of the machinist handbook.
Don
1967 GMC 9500 Fire Ladder Truck"The Flag Pole"In the Stovebolt Gallery1946 2-Ton grain truck 1946 3/4-ton pickup, 1953 1-ton pickup 1957 1-ton flatbed dually, 1954 Pontiac Straight Eight Of all the things I've lost in my life, I miss my mind the most! | | |
|
|
| |
