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 6620-00-495-7438
NSN 6645-00-411-3733
NSN 5920-00-617-9909
NSN 5950-01-381-6393
NSN 6685-01-028-5168
NSN 5998-00-299-7891
NSN 6130-01-120-2984
NSN 5975-01-022-1746
NSN 4140-01-197-9883
NSN 6220-00-868-2032
NSN 5920-01-433-2261
NSN 6645-00-489-8575