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 7035-00-371-7749
NSN 6110-00-762-9128
NSN 4140-00-230-4252
NSN 5855-00-791-5000
NSN 6685-01-433-2050
NSN 5905-01-287-9405
NSN 6320-00-070-4544
NSN 6135-01-364-0667
NSN 6130-00-753-2807
NSN 2925-00-845-1480
NSN 5998-01-605-1342
NSN 5990-01-065-0492