Parkerized jam nuts from Colony motorcycle products have a thread size of 7/16 -20 N.F. x 3/8 x 3/4 and are used for the auxiliary spring bracket assembly and Spring Fork front forks of 45 models.
FITMENT
1929 / 1952 WL 1936 / 1940 EL 1941 / 1964 FL ACCESSORY ITEMS
31-0427
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