BAHCO závitník G 1.1/2 NGRA/2 DIN-5157 HSS

The BAHCO TAP G 1.1/2 NGRA/2 DIN-5157 HSS is a high-quality threading tap designed for internal pipe threading. Manufactured in Poland, this tap conforms to DIN 5157 and ISO 228-1 standards, ensuring precision and reliability. Made from high-speed steel (HSS), it offers excellent durability and performance for general-purpose threading in non-abrasive materials such as unalloyed steel, cast iron, and non-ferrous metals.

Advantages

This tap features a straight flute design with 6 flutes for efficient chip evacuation and smooth cutting. The right-hand thread direction and 11 threads per inch (2.309 mm pitch) provide consistent threading. The uncoated surface treatment ensures compatibility with a wide range of materials. The square drive size of 29 mm allows secure mounting in tap wrenches or holders.

Suitable for

• Internal pipe threading in general-purpose applications
• Non-abrasive materials: unalloyed steel, cast iron, non-ferrous metals
• Industrial maintenance, plumbing, and manufacturing

Key specifications

• Thread Type: G (BSPP - British Standard Pipe Parallel)
• Nominal Thread Size: 1 1/2 inch
• Standard: DIN 5157 / ISO 228-1
• Material: High-Speed Steel (HSS)
• Thread Direction: Right-Hand
• Threads Per Inch (TPI): 11
• Pitch: 2.309 mm
• Major Diameter (Nominal): 59.614 mm
• Overall Length (L1): 160 mm
• Thread Length (L2): 50 mm
• Shank Diameter (d2): 38 mm
• Square Drive Size (a): 29 mm
• Number of Flutes: 6
• Flute Type: Straight Flute
• Tolerance Class: ISO 228-1 (G)
• Surface Treatment: Uncoated
• Manufacturer Country: Poland

Recommendations

For optimal results, use with appropriate cutting fluid and ensure the tap is aligned correctly. Suitable for manual and machine tapping operations. Always follow safety guidelines when threading.