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 6610-00-954-6156
NSN 6110-00-496-9887
NSN 5985-00-244-1378
NSN 5910-00-797-8460
NSN 5920-01-099-3098
NSN 4140-00-400-7999
NSN 5990-01-347-6080
NSN 5895-01-120-5290
NSN 6685-00-863-6350
NSN 7035-00-470-4977
NSN 5975-00-027-7358
NSN 6220-01-351-6686