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