Need help on wheel studs - The 1947 - Present Chevrolet & GMC Truck Message Board Network

bugs4121 · 08-07-2003, 09:03 PM

I need some guidance.....the rear wheel studs on my 72 k20 Eaton rear happen to be 1/2 and the fronts are 9/16 is this normal or did somebody cut a corner before I bought my truck???? I need to replace a few that are damaged , will the 9/16 fit into my rear hubs the same as the 1/2 studs and finally when the chrome lugnut says 9/16 X 18 what does the 18 stand for ????

Thanks

Class of 69 · 08-07-2003, 09:08 PM

Sounds like one of the axles was swapped out. I've never come across a factory install with different size studs. You will probably need to change the whole rear hub to get the bigger studs. The 18 is threads per inch.
Just looked them up...1/2 inch stud was 67-70.... 9/16 71-72

08-07-2003, 09:03 PM	#1
bugs4121 Registered User Join Date: Nov 2002 Location: Bowie,Maryland Posts: 56	Need help on wheel studs I need some guidance.....the rear wheel studs on my 72 k20 Eaton rear happen to be 1/2 and the fronts are 9/16 is this normal or did somebody cut a corner before I bought my truck???? I need to replace a few that are damaged , will the 9/16 fit into my rear hubs the same as the 1/2 studs and finally when the chrome lugnut says 9/16 X 18 what does the 18 stand for ???? Thanks __________________ -1972 K20 longbed -350 4 Barrel -4 speed

08-07-2003, 09:08 PM	#2
Class of 69 Registered User Join Date: Mar 2003 Location: Stillwater MN Posts: 1,166	Sounds like one of the axles was swapped out. I've never come across a factory install with different size studs. You will probably need to change the whole rear hub to get the bigger studs. The 18 is threads per inch. Just looked them up...1/2 inch stud was 67-70.... 9/16 71-72 __________________ 69 GMC K10 ..some restoration required....still.. Last edited by Class of 69; 08-07-2003 at 10:50 PM.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.