Taper Length Core Drill Bits - Straight Shank

High Speed Steel Drills

Fractional Sizes

SS400 - HSS, Core, Straight Shank, 4 Flute, Surface Treated, 118° Chamfer

Used to size or enlarge cored, punched or other pre formed holes; not designed to drill from solid. Operates at heavier feeds than 2 flute drills since chiploads are spread over a greater number of cutting edges. Reduce regular drill speed 25% and double the feed rate.

Package quantities; 3/8 to 1/2 - 1 per envelope, 17/32 to 1 - 1 per tube, 1-1/32 to 1-1/2 - 1 per box