Stainless steel, circular w/flange, threaded 3/4-16unf3a on end opposite flange, flange 1.250 in. Od, 0.114 in. Thk flange, 0.914 in. O/a lg, bored through 0.175 in. Id, counterbored 0.275 in. Dp on flange end, counterbore threaded 5/8-24unf2b to 0.238 in. Dp, both ends chanfered