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Description
Technical data for the NPT 1/4-18 die
| Technical data | ||
|---|---|---|
| Nominal diameter d1 inches/mm | NPT 1/4-18 inch | 13.15 mm |
| Thread pitch P inches/mm | 18 threads per inch | 1.41 mm |
| Outside diameter d2 | 38 mm | |
| Thickness h1 | 14 mm | |
| Number of chip clearance holes | 5 | |
| Required shaft diameter | 13.26 mm | |
| Thread angle G | 60° | |
| Thread standard | ANSI/ASME B1.20.1 DIN 24230 | |
Die NPT 1/4-18 HSS – taper threading die for precise pipe threading
The NPT 1/4 die is a professional tool for cutting external taper pipe threads with a diameter of 1/4 inch and a pitch of 18 threads per inch. Made of high-speed steel (HSS) in accordance with DIN 24230 and ANSI/ASME B1.20.1, it is designed for precise pipe threading in pneumatic and hydraulic installations.
Key advantages of the NPT 1/4 pipe threading die
- Self-sealing connections without gaskets – a taper of 1:16 and a thread angle of 60° ensure leak-tightness in pressure systems up to 700 bar
- Ideal for pneumatics and industrial automation – proven for compressed air, valve, and compact cylinder connections
- Precision in industrial instrumentation – excellent for threading pressure gauge, pressure sensor, and transducer connections
- HSS steel durability – enables machining of carbon steels, copper, and brass with tensile strengths up to 800 MPa
- Compliance with DIN 24230 and ANSI/ASME B1.20.1 – ensures compatibility with American connection systems
The NPT 1/4 taper threading die is used in pneumatic service shops, industrial automation workshops, and the installation of control systems and instrumentation. Inch taper threads of this size are standard in instrumentation connections and compact hydraulic systems.
This tool for hydraulic threads is chosen by automation technicians and pneumatic service technicians who value manufacturing accuracy and connection reliability. Order the NPT 1/4 die for professional pipe threading in precision installations.
Frequently asked questions
The tool is suitable for pneumatics, industrial automation, and instrumentation. Typical applications include pressure gauge and pressure sensor connections.
The NPT thread with a diameter of 1/4 inch has a pitch of 18 threads per inch. This is a fixed value specified by ANSI/ASME B1.20.1.
The tapered thread profile provides a seal through thread wedging. PTFE tape or sealing compound is recommended for higher pressures.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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