CHARTS & FORMULAS

Tap Drill Sizes
http://reference.kennametal.com/Calculators/Dual/TapDrillSize.aspx

Speeds & Feeds
http://reference.kennametal.com/Calculators/Dual/MiscSpeedFeed.aspx

Material Grade Comparison Table            www.kennametal.com/images/pdf/techRef/turning/materialGradeComparisonTable.pdf