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34020 – 5/16″ x 5/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
Original price was: $ 29.39.$ 23.51Current price is: $ 23.51.
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 Shank
- Drill Size: 5/16″ Ø
- Counterbore Size: 5/8″ Ø
- Replacement Twist Drill: Part # 39120
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