Fork crown main tube clamping stud + nut + washer, Norton long road holder, pair. Clamping stud is often referred to as a pinch bolt.
Original part number:
B2/642; 13457 - Fork crown main tube clamping stud x 2
B2/643; 13459 - Fork crown main tube clamping nut x 2
-washer (not listed in parts book) x 2
