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9/64"x7/16" 3-Flute Flt Btm
$16.37
9/64" x 7/16" 3-Flute Flat Bottom Counterbore with TiN coated twist drill
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: 9/64"
Counterbore Size: 7/16"
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