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 5895-00-134-3157
NSN 5990-01-443-2931
NSN 6650-01-599-0019
NSN 6105-01-221-6074
NSN 2925-00-137-5120
NSN 6130-01-152-1189
NSN 5920-00-007-4245
NSN 6110-01-314-1203
NSN 6240-01-466-7588
NSN 6320-01-503-7180
NSN 6110-01-220-2282
NSN 6130-00-834-0142