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 5985-00-345-8849
NSN 5998-00-389-8858
NSN 6105-00-969-2663
NSN 6145-00-309-2211
NSN 6130-01-461-0692
NSN 2925-01-629-9416
NSN 6645-01-487-8227
NSN 6145-01-391-0482
NSN 6105-01-652-2299
NSN 5950-01-656-7432
NSN 5960-01-449-1310
NSN 6105-01-511-4771