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 6610-00-031-1206
NSN 5855-00-906-5386
NSN 5990-01-088-5293
NSN 6685-01-567-9425
NSN 6620-01-063-9054
NSN 6130-01-165-9419
NSN 5925-01-221-4088
NSN 5990-00-160-1176
NSN 5950-01-054-3508
NSN 5999-00-791-5846
NSN 5895-01-364-4636
NSN 6105-00-394-9935