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The diameter and pilot drill size versus wood screw gauge.
|Gauge Number||Diameter mm||Pilot Drill mm||Gauge Number||Diameter mm||Pilot Drill mm|
|6||3.51 Note 1||2.1||18||7.72||4.2|
Note 1: For the gauge 6 woodscrew I get lots of different results when I search for the size from 3.45mm 0.138" up to and including 9/64" which is 3.57mm. If anybody out there has a definitive number and reference then please let me know email@example.com.