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 20 results
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32408 – 1/8″ x 3/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 16.26 Add to cart -
32809 – 9/64″ x 7/16″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 16.37 Add to cart -
33208 – 1/8″ x 1/2″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 16.26 Add to cart -
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 -
34012 – 3/16″ x 5/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 27.29 Add to cart -
34016 – 1/4″ x 5/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 28.34 Add to cart -
34020 – 5/16″ x 5/8″ 3-Flute Flat Bottom Counterbore with TiN coated twist drill
$ 29.39 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 -
36428 – 7/16″ 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 -
39112 – 3/16″ Replacement Twist Drill for Flat-Bottom Counterbores-TiN Coated HSS
$ 8.39 Add to cart
Showing all 20 results