Steel, aisi b1112, cadmium plate to resist salt spray, 0.750 in. Flats 0.500 in. Lg w/0.125-27 -dry seal nptf thds 0.313 in. Dp one end, 0.370 in. Diameter w/0.125 drill 0.313 in. Dp holes/2), 0.375-18 dry seal nptf thds 0.500 in. Lg externally second end, 1.000 in. Lg o/a