1/2" x 20 CEI Thin Nut - BSA Camshaft Pinion Nut + Hub Spindle Lock Nut - Various Uses
Used to secure the camshaft gear on A7 and A10 models + some early A50 and A65 models.
Splined rear hub A and B group - spindle lock nut.
Also used to secure the footrests on A and B group swinging arm models.
Thread: 1/2" x 20 TPI CEI
Depth: 1/4" (5.5mm)
OEM: 02-0124, 2-124, 27-6716