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 5895-01-398-9088
NSN 7035-01-386-5722
NSN 6240-01-200-7937
NSN 5985-00-046-1877
NSN 6145-00-405-9819
NSN 5985-01-463-0955
NSN 2925-01-461-4347
NSN 5960-00-981-3014
NSN 5965-01-474-5654
NSN 5915-01-604-9868
NSN 6650-01-504-4745
NSN 5925-01-501-7624