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 6320-00-160-0899
NSN 6135-01-510-9986
NSN 5915-00-376-5723
NSN 6320-00-194-4252
NSN 6130-00-244-1406
NSN 5915-01-387-0486
NSN 4140-00-210-0552
NSN 2925-01-391-9247
NSN 6620-01-597-0512
NSN 6620-00-009-0904
NSN 5999-01-578-0271
NSN 5915-01-535-3822