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 5910-01-212-1887
NSN 5985-01-459-8441
NSN 5965-01-085-6158
NSN 5905-01-219-9597
NSN 5835-01-477-0137
NSN 5935-01-647-7699
NSN 6650-01-535-6287
NSN 5975-01-560-8272
NSN 5996-01-300-3103
NSN 5910-01-162-9073
NSN 6220-01-311-8865
NSN 6145-01-130-9585