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 5945-00-947-2709
NSN 6645-01-437-9017
NSN 6145-01-651-4601
NSN 5985-01-204-8232
NSN 2925-00-998-3510
NSN 5930-00-193-4685
NSN 5835-01-140-9306
NSN 5915-00-952-5658
NSN 6110-01-054-3032
NSN 5925-01-044-5508
NSN 5960-00-315-0358
NSN 6150-01-535-5562