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 6130-00-885-1425
NSN 5920-01-070-8843
NSN 5990-01-650-9034
NSN 6220-01-560-2093
NSN 6110-01-463-4433
NSN 5910-01-514-8888
NSN 5990-00-419-0236
NSN 5998-01-433-2714
NSN 5999-01-539-2869
NSN 6240-01-503-1211
NSN 6105-00-928-7210
NSN 6130-01-108-0388