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 5910-00-266-8438
NSN 5930-00-959-0077
NSN 5895-00-157-8232
NSN 5910-01-099-3645
NSN 5895-01-532-2670
NSN 6620-01-164-4913
NSN 7035-01-449-1189
NSN 5920-01-443-3771
NSN 5965-00-799-5490
NSN 6645-01-009-7678
NSN 4140-01-381-3221
NSN 5920-00-848-0264