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 5925-01-287-0657
NSN 5965-00-711-6419
NSN 6240-01-367-6561
NSN 6650-00-650-8080
NSN 5935-01-023-5995
NSN 6105-01-054-4362
NSN 6645-01-147-5579
NSN 6685-01-462-4491
NSN 5835-01-106-1456
NSN 5855-01-047-9267
NSN 5950-01-349-8456
NSN 6240-01-487-7516