Tap and drill 6 reference table Our Tap Drill Reference Table is a must have for any toolmaker, machinist or mechanic. The double-sided guide features a Tap Drill Depth Chart, decimal conversions from 1/6" to 6" and a ruler graduated in 6ths. The Tap Drill Reference Table works with National Fine, National Course, American Standard Pipe and Metric threads.
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Industrial & Scientific > Industrial Hand Tools