9/16″ 20TPI kickstart pinion nut as fitted to many Triumph 350 500 650 twins up to 1966. Also used as the swingarm nut. Made in UK.
This nut replaces PN# NT297, NT0297, 70-2419, E2419, 57-2009, T2009 & 99-3542.
For the locktab washer to secure this nut click here.
