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 5925-01-203-2084
NSN 5950-01-551-3675
NSN 5985-00-875-1002
NSN 5950-00-504-0535
NSN 5835-00-146-9928
NSN 5996-01-561-4885
NSN 5910-01-286-5532
NSN 6130-01-092-0792
NSN 5975-00-984-6582
NSN 6320-01-166-3602
NSN 5930-00-642-9974
NSN 6105-01-604-3435