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 7035-01-295-1609
NSN 5965-00-801-1131
NSN 5915-01-482-5502
NSN 6150-01-414-1822
NSN 6645-00-144-4868
NSN 6650-01-138-5891
NSN 5960-00-082-0493
NSN 4140-00-427-6638
NSN 5985-00-333-9603
NSN 6135-00-432-8779
NSN 6650-01-123-1091
NSN 6320-01-281-6028