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 6135-01-444-6824
NSN 5945-01-045-1225
NSN 6645-01-616-8996
NSN 6145-01-415-5261
NSN 6240-01-529-7819
NSN 5925-00-111-1969
NSN 5920-01-176-5426
NSN 6620-00-144-7201
NSN 5910-01-653-4203
NSN 5935-01-389-8889
NSN 6685-00-354-2086
NSN 5910-01-328-8539