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
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