Engine Sprocket Nut is 7/8 -14.
Nut has a 7/8-14 thread.
Fits:
FL 1955-1969
UOM: EA
Country Of Origin: TAIWAN
OEM Cross Reference: 24003-55
Accessory Items:
17-0945 – Sprocket Nut and Lock Tab Kit
16-0130 – Flat Type Compensating Sprocket Wrench
10-1160 – Sprocket Shaft Spacer .336