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 6150-00-969-8825
NSN 5945-00-283-3048
NSN 5835-01-399-5820
NSN 5996-01-540-6261
NSN 6650-01-605-2302
NSN 6105-01-486-3600
NSN 5920-00-206-3595
NSN 5925-01-058-1265
NSN 6220-01-288-2916
NSN 5985-01-312-1068
NSN 5990-00-321-8459
NSN 4140-01-420-6263