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 7035-00-803-3056
NSN 5996-01-323-6008
NSN 6135-00-196-5267
NSN 5996-01-204-5640
NSN 5950-00-159-1571
NSN 6650-01-599-9849
NSN 6645-01-163-9930
NSN 6130-01-071-5341
NSN 5835-01-286-3600
NSN 6320-01-268-3072
NSN 7035-01-202-8172
NSN 5935-01-006-4217