Damaged threads on the bolt can also damage the threads inside the crankshaft, resulting in either a bolt that comes loose, or a bolt that never comes out again! This is a brand new, economical reproduction flywheel bolt for 1275 and 1300 classic Mini pre-Verto engines. Ref: 22A747, 22A0747E.
See deep 1.5" socket STL0038, you’ll need that size socket for installation.