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Description
Technical data for the G 2 inch tap
| Technical data | ||
|---|---|---|
| Nominal diameter d1 inches/mm | G 2 inch | 59.6 mm |
| Thread pitch P inches/mm | 11 threads per inch | approximately 2.309 mm |
| Overall length l1 | 220 mm | |
| Flute length l2 | 50 mm | |
| Shank diameter d2 | 45 mm | |
| Square drive size a | 35 mm | |
| Tap drill diameter | 57 mm | |
| Chamfer | C (2÷3) P | |
| Thread angle G | 55° | |
| Thread standard | BSP DIN ISO 228 | |
Where chips remain in a straight-flute tap
The flute holds the chips until the tap is reversed out
The straight flute runs parallel to the tap axis. It has no helix to carry chips upward. The chamfer cutting edges are not ground at an angle, so they do not push chips downward. Short chips break into fragments and remain in the flute, next to the cutting edges that produced them. They leave the hole only with the tap as it is reversed out. The shank of the G 2 tap according to DIN 5156 has a diameter of 45 mm and a square size of 35 mm.
1
Straight flute – chips remain in the flute, next to the cutting edges that produced them.
2
Chamfer C: 2–3 incomplete threads on the tapered lead.
3
The tap rotates clockwise to cut a right-hand thread.
4
Individual fragments exit at the top, onto the workpiece surface.
5
A few fragments fall below the tip and exit through the bottom of the hole.
6
The G 2 thread has 11 threads per inch; the feed is approximately 2.309 mm/rev.
G 2 inch machine tap for stainless steel
Machine Tap G 2 DIN 5156 C HSSE is a professional tap designed for producing parallel pipe threads G2 inch in through holes. Made of cobalt-alloyed HSSE high-speed steel, it provides high abrasion resistance and long tool life when machining steel, stainless steel and cast iron.
Short form C chamfer (2–3 cutting threads) enables precise starting of the tapping process, while compliance with the standard DIN 5156 ensures full dimensional repeatability and compatibility with the BSP (British Standard Pipe) thread system.
G2 inch machine tap is a reliable solution for industrial installations, hydraulics and manufacturing applications requiring leak-tight, durable pipe connections.
- HSSE – cobalt-alloyed high-speed steel ensures long service life and resistance to high temperatures
- Form C chamfer – facilitates reliable, fast entry into the material
- Intended use – for steel, stainless steel and cast iron
- DIN 5156 – guaranteed quality and dimensional conformity
- For G inch pipe connections – in installations requiring leak-tight connections
Frequently asked questions
The question “how many mm is G 2 inch” or “how many cm is G 2 inch” often arises when selecting pipe tapping tools. Contrary to what one might expect, the value 2 inch (equivalent to 59.6 mm or 5.96 cm) does not indicate the thread diameter, but the nominal size of the pipe that the thread fits. In practice, the 2 inch G tap has an outside diameter of 59.6mm, because G (BSP) pipe threads are designed for thick-walled pipes.
For this reason, always check the thread diameter in the technical data instead of converting inches directly to millimeters. In the BSP system, thread size is determined by the design of the entire installation, not just the nominal dimension.
No. A G (BSP) thread is a parallel pipe thread, meaning its diameter is constant along its entire length. Unlike taper threads (designated R or BSPT), G threaded connections are not self-sealing. This means that a G thread does not provide a seal on its own – it requires an additional sealing element, e.g. a flat gasket, O-ring or plastic washer. This sealing method is commonly used in hydraulic, pneumatic and industrial installations.
Product accessories
Countersink 2 inch G HSS DIN EN 24231 Cztool
Reference: 0000003303
€127.63
€156.99 brutto
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