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 5945-01-415-0603
NSN 5855-00-221-9435
NSN 5990-01-347-6080
NSN 6135-01-350-5845
NSN 5910-00-378-9598
NSN 6150-01-398-9850
NSN 5915-01-180-7199
NSN 6320-00-886-9771
NSN 5910-00-193-4558
NSN 5990-01-291-8453
NSN 6105-01-110-2867
NSN 5905-01-077-8757