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 5855-00-288-1408
NSN 7035-00-009-8705
NSN 5975-01-528-8520
NSN 5960-01-288-8910
NSN 5855-01-213-9076
NSN 6610-01-586-3181
NSN 5985-01-099-2735
NSN 5965-01-422-7638
NSN 5945-01-196-6030
NSN 6645-00-062-7606
NSN 6650-00-491-0277
NSN 5910-01-415-5758