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 5975-01-510-4355
NSN 5855-01-064-8961
NSN 4140-00-068-0267
NSN 6130-00-141-8317
NSN 6650-00-505-4682
NSN 5905-01-544-9639
NSN 5930-00-228-6987
NSN 5975-00-796-2886
NSN 7035-01-534-7930
NSN 6240-00-519-3399
NSN 5985-01-634-0635
NSN 5855-00-361-0167