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 5905-01-510-9397
NSN 6240-00-269-3346
NSN 5925-01-223-6382
NSN 6650-01-533-1267
NSN 2925-00-445-4054
NSN 4140-01-428-4226
NSN 5990-01-482-5950
NSN 6105-01-241-0535
NSN 5925-01-111-0655
NSN 5998-01-237-9356
NSN 2925-00-759-5465
NSN 5915-01-578-9453