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 6610-01-550-7320
NSN 7035-01-072-3451
NSN 6220-01-411-6542
NSN 5925-01-310-8456
NSN 6650-00-164-7480
NSN 6685-01-068-7704
NSN 5996-01-395-6608
NSN 6220-01-633-7358
NSN 2925-01-437-9041
NSN 5999-01-221-9175
NSN 5990-01-617-5156
NSN 5945-01-228-8157