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 6110-01-388-3803
NSN 5960-01-425-1454
NSN 6240-00-364-0850
NSN 6620-01-510-6367
NSN 6645-00-230-4396
NSN 5920-01-035-2503
NSN 5920-01-149-3063
NSN 4140-00-175-6036
NSN 6240-00-201-9011
NSN 6240-00-512-3473
NSN 5855-01-463-1315
NSN 6240-01-584-6774