Cutting Diameter Description Series Page Depth 47N, 48N .500 - .787 .20 - .29 Solid Carbide Chamfer 411 45° Helix, Not Center Cutting and Countersink .394 - .630 .425 -.560 Corner .062", .094", .156", .187"O.D. Radius45RSolid Carbide CornerRounding Tip412 18T .625 .13 Front/Back Chamfer, 413 Chamfer .062" x 45° V-Form Tip 18T .500 - 1.000 .09 - .19 Corner .015"R, Precision T-Slot Milling 414 Chamfer .006" x 45° Tip .252 - .394 - .630 47Y 416 .445 Solid Carbide Thread Milling Tip .181 - .129 - .254 .350 120° Included Point Angle, 45Z 417 10° - 15° Helical Flute, Center Drill .375 - .750 .22 12J1D 418 90° Lead End Mill 1SJ1Y .750 - 1.000 .31 420 0° Lead End Mill (Chip Surfer Style) .500 - .750 .250 - 1BW7 421 .375 Pro-ball Tip .312 - 1.250 - S0_SA, WB_SA 422 Necked Down Straight Shanks 388