2b thread class right-hand 16 thread quantity per inch one groove 0.170 in. min 0.200 in. max width, 0.060 in. depth on nut bearing surface parallel to threaded area
0.750" hole diameter 1.355" outside diameter 0.042" material thickness navy special project two 0.084 in. min/0.104 in max radius notches spaced 180.0 degrees apart on outer periphery of washer 15 recessed