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 5960-01-395-9834
NSN 6645-00-557-0322
NSN 2925-00-403-5036
NSN 5996-00-372-4528
NSN 5990-00-736-8778
NSN 6650-01-606-5725
NSN 5915-00-391-5735
NSN 5985-01-096-6850
NSN 6110-01-217-3342
NSN 5855-00-560-0110
NSN 5965-01-357-8259
NSN 5999-00-873-8071