10+ Tap Drill Size Calculator

Please Use The Calculator Below To Find The Best Drill Bit Size Needed For Any Fractional Taps, Including Special Taps.

To use a drill tap size chart, start by identifying the tap size and thread pitch you need for your project. In general, tap tool life can be increased significantly by using a lower percent. After you calculate the drill size, please check the conversion chart.

Always Use Caution And Best Judgement When Applying Updated Speeds/Feeds.

Find the tap drill size for imperial unified and metric unified national threads based on basic diameter, pitch, and thread percentage. This widia engineering calculator will calculate tap drill size for tapping applications. Metric tap drill size calculator to calculate drill size for tapping metric thread according to iso 2306 standard.

Unified Inch, Iso Metric, Taper Pipe Threads Are Available.

Click on the line to enter it into the diameter window. Find recommended tap drill sizes for inch and metric threads, as well as taper pipe and straight pipe sizes. Enter the drill hole size, outside diameter, percent full.

Determine Whether The Tap Size Is In The Category Of Inch, Metric, Screw, Or Pipe (Npt).

Calculate tap drill size for tapping applications. Use the tables or the remote calculators to look up or convert screw data. Easily calculate tap drill size with our free online tap drill calculator.

Each Individual Application Is Different Than The Next.

Just enter thread diameter and pitch to get accurate results instantly. Calculate tap drill size for internal thread from 0.060 to 2 inch with various tolerance classes and length of engagement. Metric thread sizes from m1.6 to m56 for coarse and fine series threads are available.