SD-3 Flat Bottom Counterbores
SD-3 Flat Bottom Counterbores are used to drill the pilot hole or clearance hole and counterbore a flat bottomed hole in one step. Great for lag screws, lag bolts, washer head screws, T-nuts & more.
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33212 – 3/16″ x 1/2″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 17.31 Add to cart -
33216 – 1/4″ x 1/2″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 18.36 Add to cart -
36416 – 1/4″ x 1″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 37.79 Add to cart
Showing all 3 results