Taper pin holds shaft to disc. Diameter is number 5
A cone-shaped, unthreaded, metallic or nonmetallic item, tapered through its entire length, primarily used to position and hold two or more mating parts in alignment.
NSN 6650-01-505-6947
NSN 7035-01-391-7470
NSN 6105-00-450-7657
NSN 6685-00-754-7495
NSN 6150-01-530-2145
NSN 5855-01-323-5394
NSN 6135-00-180-5125
NSN 5985-01-076-4710
NSN 5915-01-215-0792
NSN 6685-01-574-0782
NSN 5915-00-681-2613
NSN 5950-01-476-7887