Counterbore Bit
Counterbore Bit
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DEWALT DW2535 3 Piece #6, #8, and #10 Countersink Assortment List Price: Sale Price: $23.66 You save: $21.42 (48%)  |
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General Tools 195-3/4 3/4-Inch Countersink Bit List Price: Sale Price: $3.84 You save: $13.68 (78%) |
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3/4" HS Countersink, Pattern Cutting Flutes That Assure Chatter Free Countersink On Steel, Brass, Aluminum & Wood, Made Of High Speed Steel With 5 Flutes, 82 Degree Point Angle With 1/4" Round Shank.
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DEWALT DW2567 #6 Countersink with 9/64-Inch Drill Bit List Price: Sale Price: $8.03 You save: $7.29 (48%) |
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Quick, professional results are easy to achieve with the DeWalt DW2567 #6 countersink featuring a 9/64-inch tapered drill bit. DeWalt's unique design lets you work efficiently, reducing three steps into one: drill, countersink, and counterbore in a single step...
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W. L. Fuller 10393011C #11 5-Piece Taper Drill Set List Price: Sale Price: $134.99 You save: $37.94 (22%) |
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Our top-line taper drill set with quick-change chuck allows you to quickly and efficiently pre-drill, countersink, counterbore and cut plugs. Technical Details: For wood screw sizes #6, #8, #10, #12 and #14...
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Amana 55232 COUNTERBORE SCREW SLOT BIT 1/2 List Price: Sale Price: $33.90 You save: $11.30 (25%) |
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Counterbore Screw Slot Router Bit |
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Makita 784832-A Quad-Driver Pre-Drill, Drive and Countersink Set, 13-Piece List Price: Sale Price: $47.84 You save: $3.56 (7%) |
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13-piece set allows you to change drill accessories quickly and easily. Fits all Makita or other brand 3/8-inch and 1/2-inch drills. The Ultra Loc has a universal connection that fits popular 1/4-inch hex shank...
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DEWALT DW2568 #8 Countersink with 11/64-Inch Drill Bit List Price: Sale Price: $8.31 You save: $7.53 (48%) |
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The DeWalt countersink with tapered drill bit is ideal for fine-wood drilling and provides you with superior speed while leaving an ideal finish. Using a four-cutter countersink and 11/64-inch drill bit, this product is uniquely designed to allow you to drill, countersink, and counterbore all in one step... |
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FF301 CARBIDE TIP 2 FLUTE FACE FRAME COUNTERBORE BIT 3/8 DIA X NO 29 PILOT DRILL X 3/8" SHANK List Price: Sale Price: $29.38 You save: $7.34 (20%) |
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WHITESIDE MACHINE FF301 CARBIDE TIP 2 FLUTE FACE FRAME COUNTERBORE BIT 3/8 DIA X NO 29 PILOT DRILL X 3/8" SHANK X 4" OAL - UNIQUE - EVANS - RITTER AND NORFIELD
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FF301SP CARBIDE TIP SPIRAL 2 FLUTE FACE FRAME COUNTERBORE BIT 3/8 DIA X NO 29 PILOT DRILL X 3/8 SH List Price: Sale Price: $35.25 You save: $8.81 (20%) |
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WHITESIDE MACHINE FF301SP CARBIDE TIP SPIRAL 2 FLUTE FACE FRAME COUNTERBORE BIT 3/8 DIA X NO 29 PILOT DRILL X 3/8" SHANK X 4" OAL - UNIQUE - RITTER - EVANS
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General Tools 195 5/8-Inch 1/4-Inch Shank Countersink List Price: Sale Price: $3.00 You save: $12.29 (80%) |
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5/8" HS Countersink, Pattern Cutting Flutes That Assure Chatter Free Countersink On Steel, Brass, Aluminum & Wood, Made Of High Speed Steel With 5 Flutes, 82 Degree Point Angle With 1/4" Round Shank.
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what does it mean to counterbore a hole?
i'm putting together a saw horse and for the top i drilled a 5/16" hole to fit a bolt through that holds the braces for the legs. the bolt doesn't fit flush to the top but the instructions say to counterbore a with a 3/4" bit to 1/8" deep. am i just drilling into my existing hole with a larger bit? or is there something more that i'm missing? thanks.
Yes, you are just making the hole bigger at the surface with a larger bit. The head of the bolt should fit inside the larger hole so it will be more or less flush with the surface.
For future reference, it is usually easier to bore the larger hole first. Drill your 3/4" hole first, 1/8 - 1/4" deep depending upon the thickness of the head of the bolt. Then drill your 5/16" hole all the way through. The smaller bit will tend to center in the larger hole as the bit will create a bit of a cupped bottom.