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 6685-00-847-0010
NSN 5905-00-584-8447
NSN 6135-00-563-7711
NSN 6105-01-080-1118
NSN 5905-00-775-5733
NSN 6320-00-313-9114
NSN 5945-01-423-9086
NSN 6145-01-391-9705
NSN 5975-01-215-1205
NSN 5965-00-193-2406
NSN 6685-01-243-4634
NSN 5920-00-604-6301