They are stronger and will last longer than any original Triumph / BSA rod bolt
518" with a 19 thread pitch (straight threads)
then this is Exactly the part you need
Andover Norton has stated that the C3 Crankshaft bearing is best for all Commandos
Replace your Old & Cracked Rubbers today with this New Set
Triumph / BSA Clutch Locking Service Tool - 61-3768 - T100 / A50 / A65 / T120 / T140 54033234 They are stronger and willTriumph Twins Clutch Locking Service Tool. With this tool there is no need to modify old clutch plates and spending hours making your own! Makes getting your clutch hub nut off easy! It's affordable, ships free, and saves you time! Made of steel and comes with a bright plated finish! Fits Triumph Twins (Unit & Pre Unit) 350, 500, 650 & 750 models (3TA, 5TA, T120, Bonneville, T140, T110, 6T, etc) from 1945 1983. Also fits BSA 500 & 650 Twins