Body diameter 0.678 to 0.688 in.; hex head 0.435 to 0.445 in. Across flats; external thd 3/4-20unef; thd cl 3a, mil-s-7742; thd lg 0.240 to 0.260 in.; id 0.565 to 0.569 in.; bore dp 0.337 to 0.347 in.; matl inconel x, ams 5667 or a-286 steel, ams 5735; o/a h 0.430 to 0.440 in.
