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 5915-00-462-3748
NSN 5925-01-303-4724
NSN 6650-00-464-6395
NSN 6620-00-643-1402
NSN 6105-01-363-9225
NSN 5915-00-770-2563
NSN 7035-01-231-0336
NSN 6145-01-450-9855
NSN 6320-01-054-3046
NSN 5855-00-247-7219
NSN 5910-00-116-8239
NSN 5895-01-580-0008