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 5920-01-476-0758
NSN 6620-01-517-0014
NSN 6240-01-260-2256
NSN 5950-01-098-8478
NSN 5935-01-121-5565
NSN 5975-01-146-5663
NSN 6135-01-386-5709
NSN 6685-01-055-9643
NSN 5960-01-201-5804
NSN 6620-00-339-0974
NSN 6110-00-283-3630
NSN 2925-00-456-7627