A soft metal or nonmetal sleeve, designed to mate with a pin-rivet. it may include an external wrenching facility which breaks off at a perdetermined torque to form a head.
NSN 5835-00-065-6757
NSN 5925-01-237-9394
NSN 6135-01-017-3001
NSN 6610-00-500-6944
NSN 5925-01-268-1826
NSN 5920-01-656-8448
NSN 6650-00-197-7563
NSN 2925-01-277-3508
NSN 5985-01-017-0785
NSN 4140-00-225-7060
NSN 5965-01-181-7831
NSN 5905-01-641-6748