*Just Arrived!* New English Made Triumph & BSA Triples Crankshaft Engine Sprocket Mounting Nut. Is your Sprocket Mounting Nut worn? or Stripped? Well we have the part that you need! Top Quality Nut that is ready to be fastened! Made to complete Factor Specs! Measures 3/4″ with a thread pitch of 20 TPI! Fits all BSA & Triumph Triples (A75, Rocket III, Trident, T150, T150V & T160) from 1968-1976. Please refer to your parts catalog for proper fitment.*****Please note that this nut can also be used on the Rear Wheel to Fasten your Axle Spindle!*****Made in the UKO.E.M Part number is 21-0585 or S585