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 6320-01-631-7828
NSN 5990-00-672-1376
NSN 6620-00-920-1671
NSN 2925-01-397-2495
NSN 6220-00-168-0948
NSN 5920-01-648-0636
NSN 5999-01-320-5221
NSN 6610-01-542-9725
NSN 5835-01-520-4479
NSN 6145-01-512-8688
NSN 6320-01-219-5174
NSN 6685-01-372-6010