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 5910-01-312-9773
NSN 5835-00-779-2836
NSN 6145-01-516-7726
NSN 5999-01-600-7708
NSN 5950-01-537-8646
NSN 5910-00-919-6125
NSN 5975-00-913-2770
NSN 5925-01-342-2745
NSN 5855-01-634-0259
NSN 5975-01-551-1172
NSN 6620-00-551-9948
NSN 5925-01-634-0664