Triumph Norton BSA 250 500 650 750 Lucas Ignition Auto Advance Fixing Bolt(s) UNF 1970 On PN# 14-0208

Late (UNF) 1/4″ x 28 TPI x 2-1/4″ UH bolt for fixing the Lucas manual advance unit for most Triumph, Norton and BSA motorcycles 1970 onward. This is the late UNF bolt, we recommend verifying that your camshaft threads are 28 threads per inch prior to ordering.