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Description
Technical data for the 3/8 inch left-hand die
| Technical data | ||
|---|---|---|
| Nominal diameter d1 inches/mm | G 3/8 in | 16.66 mm |
| Thread pitch P inches/mm | 19 threads per inch | 1.33 mm |
| Outside diameter d2 | 45 mm | |
| Thickness h1 | 14 mm | |
| Number of chip clearance holes | 5 | |
| Required shaft diameter | 16.54 mm | |
| Thread angle G | 55° | |
| Thread standard | BSP DIN ISO 228 | |
Die 3/8 inch left-hand G HSS – tool for medium-sized left-hand pipe threads
Die 3/8 inch left-hand is designed for cutting left-hand parallel pipe threads in the G (BSPP) system with a 55° profile. High-speed steel (HSS) ensures cutting edge durability when machining steel, copper, and brass pipes. Manufacture in accordance with DIN EN 24231 ensures full compatibility with gas and pneumatic fittings with left-hand threads.
Features of the 3/8 inch left-hand die for specialized installations
- HSS steel with enhanced resistance – effective machining of materials with tensile strengths up to 800 MPa while maintaining cutting precision
- Left-hand BSPP parallel thread form with a 55° angle – designed for gas connections requiring protection against incorrect assembly
- Thread major diameter 16.66 mm – complies with the BSP standard for the nominal size of 3/8 inch
- Compliance with DIN EN 24231 – confirms dimensional compatibility with medium-sized gas regulators and valves
- Optimal flute geometry – ensures smooth material evacuation during threading
The 3/8 inch left-hand die is suitable for servicing industrial gas systems, installing acetylene cylinder regulators, and working on pneumatic systems in rotating machinery. This left-hand thread size is also used in specialized welding equipment and flammable gas distribution systems.
Choose the 3/8 inch left-hand G HSS die for cutting left-hand threads on medium-diameter tubing. A professional solution for gas installers and welding equipment service technicians.
Frequently asked questions
The nominal value of 3/8 inch (9.525 mm / 0.9525 cm) designates the pipe size in the BSP system. The standard accounts for wall thickness, so the actual major diameter of the G 3/8 thread is 16.66 mm.
The 3/8 inch BSP left-hand thread is found in acetylene cylinder regulators, welding fittings, and flammable gas systems. The left-hand thread direction prevents accidental connection to fittings intended for nonflammable gases.
Product accessories
Hand Tap 3/8 inch left G DIN 5157/2 HSS
Reference: 0000008855 In stock > 10 items
€17.11
€21.04 brutto
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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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