0.639" hole diameter 0.448" major thickness 1.055" overall width navy special project high corners chamfered 45 deg by 0.250 in. anodize surface treated bevel
Used on w/s:airborne mobile dir air spt ctl (2id),(o2mjul83)(an/uyq-3a). 3b thread class right-hand flat head style 20 thread quantity per inch passivate surface treated