1.630 in. Long, 1.130 in. Wide, 0.580 in. High; has 4 0.157/0.152 in. Holes-one in each corner; center cut-out 0.750 by 0.750 in. Typ; hole in center cut-out thd 5/16-24 unf-3b through per mil-s-7742; top of fitting rests on base at an angle of 12 degrees 3o min; chamfer 4 top corners 0.090 in. By 45 degrees typ