Used on 92f support equipment, f-16 aircraft. 3.340" inside diameter 0.359" overall width plain hexagon head screw used on grumman aircraft, model A10 chromate zinc band or zinc band surface treated band
0.688" inside diameter 0.562" overall width thumb head screw thumbgrip drilled 0.069 min 0.074 max in. dia for lockwire cadmium screw surface treated band