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 5925-00-126-1489
NSN 5960-01-087-7138
NSN 5910-01-536-0009
NSN 6685-01-215-6609
NSN 6610-00-487-9624
NSN 5930-01-197-2665
NSN 6105-01-565-9656
NSN 6110-01-046-0120
NSN 7035-01-250-5744
NSN 5990-01-154-7296
NSN 5920-01-419-3027
NSN 7035-01-339-3665