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dsraven · 01-28-2016, 12:22 AM

on my 57, the bolts the hold the top of the fender to the cab cowl area are 3/8 UNF (fine thread). not sure of the length. just be sure that the cowl area is original because the new aftermarket body parts that I welded in for that area that have those attachment nuts are 3/8 UNC (course thread). it would be a great idea to chase the threads with a tap before installing the bolts for the final time but be sure to check what actual thread you have there. lots of funny stuff has happened to these old beauties over the years.

01-28-2016, 12:22 AM	#3
dsraven Registered User Join Date: Nov 2010 Location: calgary alberta Posts: 8,501	Re: Upper Fender Bolt size on my 57, the bolts the hold the top of the fender to the cab cowl area are 3/8 UNF (fine thread). not sure of the length. just be sure that the cowl area is original because the new aftermarket body parts that I welded in for that area that have those attachment nuts are 3/8 UNC (course thread). it would be a great idea to chase the threads with a tap before installing the bolts for the final time but be sure to check what actual thread you have there. lots of funny stuff has happened to these old beauties over the years.