FLEXLOC 20FK-524 - THNLTLKNT,CRBSTL,5/16"-24,.097X.5IN,150 - LOCK NUT, DIMENSIONAL STANDARDS MIL-S-8879, NASM25027, USAS B46.1, FINISH BLACK OXIDE, HEX HEIGHT 3/32 IN, HEX TYPE THIN LIGHT HEX, HEX WIDTH 1/2 IN, LOCK TYPE FLEXIBLE TOP, MATERIAL STEEL,...