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 5975-00-719-9793
NSN 6105-00-148-8279
NSN 4140-00-861-5399
NSN 6645-01-116-2037
NSN 6620-00-058-1533
NSN 2925-00-596-9775
NSN 5930-01-634-0659
NSN 6220-00-225-8345
NSN 6150-01-389-1304
NSN 5999-01-552-6206
NSN 5985-01-438-1459
NSN 2925-00-210-3873