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Description
Technical data of manual tapping machine 1 inch left
| Technical data | ||
|---|---|---|
| Nominal diameter d1 inch/mm | G 1 inch left | 33,25 mm |
| Thread pitch P inch/mm | 11 turns per inch | 2.31 mm |
| Overall length l1 | 100 mm | |
| Length of working part l2 | 25 mm | |
| Diameter of the shank part d2 | 25 mm | |
| Size of square drive a | 20 mm | |
| Threaded bore diameter | 30.75 mm | |
| Threaded hole diameter C | (2÷3) P | |
| Thread angle G | 55 degrees | |
| Thread standard | BSP DIN ISO 228 | |
Hand Tap 1 inch left for pipes
Hand Tap 1 Inch Left G DIN 5157/2 HSS is a 2-piece set (ripper + finisher), designed for manual cutting of cylindrical G(BSP - British Standard Pipe) pipe threads with a left direction of cut and a profile angle of 55 degrees. Made of wear-resistant HSS high-speed steel, it ensures long life and precise tool guidance even under demanding conditions.
The G1 inch thread is characterized by an outside diameter of 33.249 mm, in accordance with ISO 228-1. The left-hand thread is used in applications where there is a risk of spontaneous loosening of connections - such as in gas, hydraulic or rotary industrial systems. The DIN 5157/2 designation means that the tool comes in a set of two taps - for pre-cutting and finishing.
The 1-inch left-hand pipe threader is suitable for professional assembly, repair and installation work, where a left-hand thread in accordance with the BSP standard is required.
- A 2-piece set (DIN 5157/2) - ripper and finisher for staged hand threading.
- G 1 inch left-hand thread - outer diameter 33.249 mm (ISO 228-1).
- Thread profile of 55 degrees - typical for BSP standard, ensures tightness and durability of the connection.
- HSS high-speed steel - high wear resistance and dimensional stability.
- Specialized application - in industry, hydraulics and gas industry, where left-hand thread is required.
Hand Tap 1 inch left G DIN 5157/2 HSS is a tool dedicated to professionals who expect reliability, precision and full compliance with BSP technical standards.
Thread cutting stages 1 inch left G in 2-piece set: ripper and finisher
Frequently asked questions
1. Why does the 1 inch left G thread cutter have a diameter of 33.25 mm? 1 inch how much is mm? And how many cm is it?
The question "1 inch how many mm" or "1 inch how many cm" often arises when selecting tools for pipe threading. Contrary to appearances, the value of 1 inch(that is, 33.25 mm or 3.32 cm) does not mean the diameter of the thread, but the nominal size of the pipe to which the thread fits. In practice, a 1 inch G thread has an outside diameter of 33.25 mm, because G (BSP) pipe threads are designed for pipes with thick walls.
For this reason, always check the thread diameter value in the technical data, and do not convert inches directly to millimeters. In the BSP system, the thread size is a result of the design of the entire installation, not just the nominal dimension.
2. Is the G thread a tapered thread and does it provide tightness?
No. G thread (BSP) is a cylindrical pipe thread, which means that its diameter is constant along its entire length. Unlike tapered threads (designated as R or BSPT), G thread connections are not self-sealing. This means that a G thread does not provide a seal by itself - it requires an additional sealing element, such as a flat gasket, O-ring or plastic washer. Such a sealing method is commonly used in hydraulic, pneumatic and industrial installations.
Product accessories
Tapered countersink 37/90 DIN 335 C HSS
Reference: 0000004108 In stock > 10 items
€32.11
€39.49 brutto
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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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