210078

General Characteristics Item Description: Steel, sae 1117 or C-1018, casehardened, 88 to 92 rockwell hardness, 15-N scale, 0.713/0.723 in. O/a lg, 0.200 in. dia 1ST shank, 0.368/0.369 in. dia 1ST shoulder, 0.300 in. dia 2ND shoulder dia, 0.002/0.006 in. deep undercut, 0.1863/0.1867 in. dia 2ND shank, 1ST shank end chamfered, 2ND shank end sq