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 5910-01-082-5620
NSN 6150-01-592-2493
NSN 6130-01-263-7321
NSN 5985-01-557-9650
NSN 5905-00-471-1478
NSN 6320-01-411-9222
NSN 5985-01-360-4171
NSN 6150-00-068-2529
NSN 6220-01-123-9290
NSN 5855-01-364-9810
NSN 6320-00-994-0179
NSN 5950-01-535-0980