Tanged Taper Length Drill, Size 5/16 inch, Decimal Equivalent: .3125, Shank Diameter: 5/16 inch, Sleeve size: 1, Flute Length: 5-1/8 in., O.A.L.: 6-3/8 in., Type: High Speed, Finish: Oxide, Tip 118 degree point, Made in USA.
These drills are designed with a heavy duty web and are recommended for drilling steel forgings, tough alloy steels and other difficutlt to machine materials. The shanks are tanged and may be used in A.S.A. split sleeve drill drivers. The flute length is longer for deeper hosles and more regrinds. Drill diameters over 5/16" have reduced shanks.
*Photos are for general reference of product. The photos are not specific to each size