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6 sie 2006 · If you want constant and continual success at tapping into stainless steel with a 5/16th x 18 tpi tap, or any other tap that you want to use, then just make sure that you drill the hole ONE METRIC sized drill UP, than what the charts recommend.
Tap drill size calculator for Inch and metric threads (For Cutting and Forming Taps). Plus formulas and charts for Tap Drill Size.
Complete Guide to Drilling and Tapping Stainless Steel. Non-corrosive and easy to clean, stainless steel is revered both for its strength and its appearance.
Easy-to-use printable tap drill chart and drill bit sizes table available for a FREE download on our website. View drill and tap chart ---->
1 lut 2021 · This formula works for both metric and imperial units, and for all 60-degree threads (all ISO, DIN, UTS, UNC, UNS, and UNF bolts). The first tap drill chart below is in mm and the next in inches. Both are available as a printable tap drill chart PDF as well.
In materials like stainless steel or bronze the relief angle should be larger to allow free cutting and to allow more lubrication to reach the cutting and friction surfaces. A bigger relief angle can allow higher tapping speed provided the tap is guided concentrically into the hole by the machine and tap holder.
Tapping tools are divided into four types: straight flute tap, spiral point tap, spiral fuse tap and forming tap. Which type you use depends on what type of hole you want to thread, blind hole or through hole, and the component material.
