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 6110-01-458-1006
NSN 5965-01-605-4703
NSN 6645-00-153-3834
NSN 6685-00-181-5342
NSN 5835-01-521-4979
NSN 5960-01-011-8687
NSN 6150-01-245-5337
NSN 5965-01-213-7256
NSN 5965-01-442-0490
NSN 6650-00-518-5194
NSN 5910-01-044-5886
NSN 6610-01-250-9327