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 6645-01-521-3180
NSN 5985-00-456-4391
NSN 5835-00-572-7445
NSN 4140-01-266-8896
NSN 6645-01-534-5545
NSN 5925-00-222-3843
NSN 6220-01-450-0428
NSN 6620-00-064-4964
NSN 6150-00-960-7784
NSN 5910-01-437-8914
NSN 5950-01-646-7192
NSN 5930-01-610-6196