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 5925-01-634-0664
NSN 5965-00-201-7479
NSN 6240-01-347-5476
NSN 6645-01-380-6111
NSN 5945-00-815-5004
NSN 5990-01-261-2962
NSN 5996-01-546-9692
NSN 5910-00-345-8351
NSN 7035-01-189-7367
NSN 5895-01-391-7200
NSN 6610-01-287-9814
NSN 6620-01-633-8443