SP0168 Sidelock Screw (Repro.) For Orig. Enfield .577 Perc. Rifle - Tower,Whitneyville Plymouth,1855 -1863 Springfield, & 1861 S

My Review Seems to have gone away... Just said these are consistent with a USA #10 machine Screw diameter with a 1.0 Metric Pitch as a result of French influence from the Charleville Musket onwards. These are \"exact fit\"" per the tolerance of the 19th Century but may have to be coaxed in a quarter turn at a time with plenty of oil!"