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 5996-00-647-5160
NSN 5935-00-299-1886
NSN 5835-01-580-0446
NSN 5935-00-856-9657
NSN 5950-01-353-6087
NSN 2925-00-099-4030
NSN 5999-01-216-0802
NSN 2925-00-652-7383
NSN 6240-01-483-0449
NSN 5999-01-546-9114
NSN 6685-01-389-6185
NSN 5965-01-026-1125