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.
Showing all 11 results
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32809 – 9/64″ x 7/16″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 16.37 Add to cart -
34812 – 3/16″ x 3/4″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 32.54 Add to cart -
34816 – 1/4″ x 3/4″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 33.59 Add to cart -
33164 – Stop Collar for 3/4″ & 1″ Flat Bottom Counterbores
$ 19.99 Add to cart -
34820 – 5/16″ x 3/4″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 34.64 Add to cart -
34822 – 11/32″ x 3/4″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 34.64 Add to cart -
34824 – 3/8″ x 3/4″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 35.69 Add to cart -
36416 – 1/4″ x 1″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 37.79 Add to cart -
36420 – 5/16″ x 1″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 37.79 Add to cart -
36424 – 3/8″ x 1″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 37.79 Add to cart -
36432 – 1/2″ x 1″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 37.79 Add to cart
Showing all 11 results