55232 Counterbore Screw Slot 12 Dia x 1516 x 12 Shank

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You can create counterbored, countersunk, and straight slots from the Hole Wizard Counterbore Slot, PM_HoleWiz_cbore_ Countersink Slot

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free video poker deuces wild It's called a counterbore slot because a counterbored hole is a hole with a recess that allows the head of a screw (other than a flat head Mill counterbore slots for table apron blocks and more Bits for #6, #8, #10 and #12 screws, all with 12 head clearance Solid carbide for great edge