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 6645-00-784-8288
NSN 6620-01-500-9847
NSN 5999-01-515-2922
NSN 5950-01-168-8782
NSN 5895-00-114-3418
NSN 5920-01-462-6119
NSN 6685-01-180-7697
NSN 2925-01-191-9668
NSN 7035-01-501-5938
NSN 6220-00-751-9709
NSN 6135-01-166-5042
NSN 6220-01-161-8199