5/16 82° – 1 Flute Hyper Countersink • HSS • For Chamfering, deburring, and countersinking • Can also be used to enlarge holes in sheet metal List Number ZD64020 Fractional 5/16 Decimal Equivalent 0.3125 Overall Length 2" Substrate HSS Angle 82° Package Quantity 1 Shank 1/4 Flute Count 1 SKU: ZD64020 Category: Countersinks Related products 3/16 90° – 1 Flute Solid Carbide Countersink Item #: SC08187 5/8 60° – 1 Flute Solid Carbide Countersink Item #: SC08627 5/8 82° – 1 Flute Solid Carbide Countersink Item #: SC08626