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 5915-01-516-0459
NSN 5895-01-511-4778
NSN 6220-01-099-3429
NSN 5910-00-584-1181
NSN 6620-01-436-2715
NSN 5895-01-569-8083
NSN 5965-00-069-8886
NSN 6645-00-899-1235
NSN 5999-00-177-1791
NSN 2925-01-236-3547
NSN 6620-00-604-7566
NSN 5990-01-354-1366