Printable NPT vs BSP Chart
This sheet is for mechanics, plumbers, machinists, and anyone comparing pipe threads before buying or fitting parts. It lists NPT vs BSP threads in a simple table with columns for size, NPT TPI, BSP TPI, NPT OD in, and BSP OD in. The rows shown include 1/8 in, 1/4 in, and 3/8 in, with their matching thread counts and outside diameters. It also notes that NPT uses 60° threads and BSP uses 55° threads, and warns not to mix them without an adapter.
Free printable · PDF
- 1 page
- US Letter — choose “Fit to page” for A4
- PDF, 52 KB
Free for personal, family and classroom use.
Use the chart to check thread size and thread pitch side by side before connecting fittings. Compare the OD and TPI values, then confirm the thread angle note when you need to identify the standard. Print it and keep it with your pipe tools, thread gauges, or parts bins for quick reference.
Good for
- Check NPT and BSP thread sizes
- Compare TPI and outside diameter
- Confirm adapter needs before fitting
Tip: Print at full size and keep it near your thread gauges for quick matching.
4 files · PDF, XLSX, DOCX
Get every sheet: Pipe Thread Reference Pack
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 Tap Drill Card
Printable NPT Thread ID Worksheet