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 5998-01-296-8473
NSN 5905-00-937-2956
NSN 5905-01-360-6055
NSN 5990-01-400-3299
NSN 5965-01-039-2795
NSN 6105-01-472-9147
NSN 5950-00-900-8944
NSN 5975-00-840-5844
NSN 6320-00-831-2227
NSN 5930-01-359-2088
NSN 5945-01-160-1783
NSN 6620-01-365-1499