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 5925-00-561-7329
NSN 5935-01-458-8608
NSN 5915-01-505-8202
NSN 6145-01-256-9163
NSN 5999-01-117-9275
NSN 6620-01-221-2643
NSN 5925-00-474-5401
NSN 4140-01-150-9209
NSN 6620-01-368-2723
NSN 5910-01-454-3435
NSN 5855-01-274-5311
NSN 6105-01-374-3445