The mounting stud is 5/16"-18

Threads measure 1/4"-32

derby and inspection covers on Harley-Davidson Big Twins 1936-1964

• Fits 1970-1984 Harley-Davidson Cone Shovelheads (74" & 80" engines)

41mm Fork Seal Rebuild Kit - 1949-1977 Harley-Davidson FL Bar Pullback_9+inches The mounting stud is 5/16"-18This 41mm fork seal rebuild kit includes all the seals you need to rebuild your forks. The high quality seals are created from butyl infused silicone rubber providing an excellent seal and longevity. Made to manufacturers specifications for a perfect fit. All seals, washers and O rings are included. Includes 2 seals, 2 thick rubber washers, 2 felt washers, 2 zinc washers, 2 flat washers, 2 thin washers. The high quality seals are created from butyl