Printable NPT Tap Drill Card
This one-page NPT tap drill card is for machinists, plumbers, and anyone drilling for pipe thread taps. It lists columns for Size, Tap drill, and Drill decimal (in), with rows such as 1/16 NPT, 1/8 NPT, and 1/4 NPT. It also notes that the chart is without taper reamer and that you should confirm with your tap maker.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 52 KB
Free for personal, family and classroom use.
Print it and keep it near the drill press or tap station. Match the NPT size to the listed tap drill, then use the decimal value to check your drill size. Use the note as a reminder to verify the tap data before cutting.
Good for
- Match NPT size to tap drill quickly
- Check drill decimal values before drilling
- Keep beside the tap and drill station
Tip: Print at actual size so the drill decimal values stay easy to read.
4 files · PDF, XLSX, DOCX
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This sheet plus 3 more in one download, with the editable Excel and Word files. Printable NPT thread chart, NPT vs BSP comparison chart, tap drill card and a thread identification worksheet.
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Printable NPT Thread Chart
Printable NPT vs BSP Chart
Printable NPT Thread ID Worksheet