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 5835-01-023-6774
NSN 6610-01-088-1810
NSN 5930-00-572-2502
NSN 5996-01-442-4715
NSN 5996-01-500-2820
NSN 6105-01-577-5287
NSN 6320-00-894-1644
NSN 5915-00-203-5890
NSN 6685-00-322-9260
NSN 6240-00-635-9953
NSN 5945-01-506-0789
NSN 5975-01-061-9320