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 5985-01-323-5007
NSN 6610-01-118-5498
NSN 5925-00-833-7204
NSN 6130-00-337-8054
NSN 6145-01-068-4138
NSN 5999-01-603-0181
NSN 5930-01-048-9760
NSN 6685-01-157-1288
NSN 5999-00-168-1888
NSN 6610-00-133-4508
NSN 5895-00-121-3366
NSN 5960-00-189-6517