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 6110-01-433-5000
NSN 6650-00-411-7132
NSN 7035-01-003-9142
NSN 6150-01-489-0100
NSN 6110-01-542-9188
NSN 6645-01-337-1806
NSN 5910-00-043-0560
NSN 6645-01-144-8627
NSN 6240-00-005-7302
NSN 5855-01-535-7127
NSN 5975-01-627-0933
NSN 6130-00-843-5087