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 5930-00-195-4284
NSN 5925-01-629-9902
NSN 6610-01-168-5015
NSN 5895-01-054-0102
NSN 5915-01-197-6218
NSN 5945-00-615-9218
NSN 5945-01-479-7773
NSN 2925-01-562-8051
NSN 7035-01-476-2138
NSN 6240-00-351-8564
NSN 6685-01-423-5651
NSN 6610-01-562-0846