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 5965-01-613-4794
NSN 6620-01-547-7758
NSN 6645-00-959-6502
NSN 5960-01-037-4809
NSN 5996-01-606-2421
NSN 5905-01-113-6821
NSN 5975-01-258-5941
NSN 5920-01-510-1271
NSN 5905-01-577-0026
NSN 5835-01-538-8080
NSN 6110-01-523-7686
NSN 6130-01-086-2047