34020 – 5/16″ x 5/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$26.45
$37.03
Use SD-3 Counterbores to drill a pilot hole and counterbore a flat bottomed hole in one step. Perfect for lag screws, lag bolts, washer head screws, T-nuts & more.Drive Shank: 1/4″ Hex Power Bit ShankDrill Size: 5/16″ ØCounterbore Size: 5/8″ ØReplacement Twist Drill: Part # 39120
Countersinks & Counterbores