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 6150-00-476-5519
NSN 6130-01-086-9647
NSN 6240-01-053-0666
NSN 5998-01-425-8045
NSN 6150-00-227-2424
NSN 6320-01-311-6576
NSN 5985-01-160-9461
NSN 6650-01-267-6522
NSN 5998-00-776-7529
NSN 6110-01-521-5387
NSN 5925-01-421-4473
NSN 5990-00-466-2952