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 7035-01-042-5308
NSN 5985-00-205-2617
NSN 6610-01-063-9303
NSN 6685-00-401-4057
NSN 5999-01-437-9404
NSN 6220-01-590-5428
NSN 7035-01-607-6711
NSN 6150-00-235-6293
NSN 5996-00-205-2933
NSN 5915-00-082-1286
NSN 6610-01-417-6336
NSN 6610-01-452-2715