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wood - When pre-drilling for screws, how do you determine the correct bit diameter? - Home Improvement Stack Exchange
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Screw Thread Gauge | Metric and SAE | Recommends Drill Bit & Tap Size (BCP675): Amazon.com: Industrial & Scientific
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Amazon.com: Ruelle Screw Chek'r SAE/ Inch Screw Thread Size Gauge (No. 1 to 5/16) 1/8 Inch Heavy Gauge Steel Screw Checker, Made in USA : Industrial & Scientific
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