0.5100" overall length slot located on centerline, right surface of flange 0.2900 in. min 0.3000 in. max w, 0.0290 in. min 0.0300 in. max deep cadmium surface treated 22c solid, external flange one end
0.0620" first hole diameter 1.1550" overall length id below 0.750 in. depth may taper to 0.004 in. less than specified id 17c-1 solid, plain, no outside flanges, internal flange one end