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Description
Technical data for the NPT 3/8-18 die
| Technical data | ||
|---|---|---|
| Nominal diameter d1 inches/mm | NPT 3/8-18 inch | 16.66 mm |
| Thread pitch P inches/mm | 18 threads per inch | 1.41 mm |
| Outside diameter d2 | 45 mm | |
| Thickness h1 | 18 mm | |
| Number of chip clearance holes | 5 | |
| Required shaft diameter | 16.67mm | |
| Thread angle G | 60° | |
| Thread standard | ANSI/ASME B1.20.1 DIN 24230 | |
Die NPT 3/8-18 HSS – taper threading die for precise pipe threading
The NPT 3/8 die is a professional tool for cutting external taper pipe threads with a diameter of 3/8 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 threading pipes and connections in hydraulic and pneumatic systems.
Key advantages of the NPT 3/8 pipe threading die
- Self-sealing connections without additional gaskets – a taper of 1:16 and a thread angle of 60° ensure leak-tightness in pressure systems up to 700 bar
- Ideal size for connections and fittings – widely used in pressure gauges, pressure sensors, valves, and pressure regulators
- Versatile use in pneumatic applications – proven in compressed air systems, cylinders, and manifold blocks
- 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 interchangeability with American piping systems
The NPT 3/8 taper threading die is used in hydraulic power service centers, pneumatic workshops, and the installation of monitoring and measuring equipment. This size of inch taper thread is among the most popular in industrial connections and fittings.
This tool for hydraulic threads is chosen by automation technicians and industrial installers making connections for sensors and measuring equipment. Order the NPT 3/8 die for precise threading of pipes and nipples.
Frequently asked questions
The 3/8 inch size is standard in pressure gauges, pressure sensors, and valves. It is also used in pneumatic cylinder connections.
The NPT thread with a diameter of 3/8 inch has 18 threads per inch. This value is specified by ANSI/ASME B1.20.1.
NPT and BSPT threads are not compatible. NPT has a thread angle of 60°, while BSPT has an angle of 55°.
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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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