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 5835-00-257-2852
NSN 6645-01-587-4642
NSN 6645-01-239-8133
NSN 6105-00-399-1352
NSN 5950-00-796-7433
NSN 5835-00-491-3834
NSN 5915-01-055-4177
NSN 6645-00-901-6418
NSN 5930-01-066-1986
NSN 5950-01-632-3060
NSN 5990-01-374-3877
NSN 5895-00-369-7108