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 7035-00-064-7008
NSN 6130-01-192-2499
NSN 7035-00-433-5670
NSN 5965-01-152-9004
NSN 5960-01-425-1454
NSN 5835-00-170-5238
NSN 6105-01-259-4649
NSN 6610-01-415-5877
NSN 5925-01-590-2513
NSN 6685-00-732-1927
NSN 5835-01-055-5418
NSN 6320-01-554-0901