What Size Drill Bit for #8 & #10 Screw? Pilot Hole Size ChartExplore further
2 days agou2002·u2002If you are using #10 hammer drive or U-drive screws, the recommended drill bit size for your pilot hole is #20. When your project uses hardwood or softwood, a standard #10 wood screw is suitable for the fastening work. You'd use a 9/64-inch bit for a straight pilot hole, although some softwoods might benefit from having a 1/8-inch bit.
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