RUKO MGB-DIN5156-HSSCo-55°-Rp-1-3/4 strojný závitník pre G 1 3/4 palca rúrkový závit

This RUKO machine tap is engineered for cutting precise internal G (BSPP) pipe threads in tough materials. The HSSCo (High-Speed Steel with Cobalt) construction delivers superior heat resistance and wear resistance compared to standard HSS, making it suitable for high-production threading of steel, stainless steel, cast iron, and non-ferrous metals. With a 55° thread angle and 11 TPI, it meets DIN 5156 / ISO 228-1 standards, ensuring compatibility with standard parallel pipe fittings.

Highlights

• HSSCo cobalt alloy for extended tool life in demanding applications
• Ground thread for high precision and smooth cutting action
• Right-hand cutting direction for standard threading operations
• 4 flutes for efficient chip evacuation
• Bright finish reduces friction and resists corrosion

In daily use

Designed for machine use, this tap delivers consistent thread quality in through or blind holes. The 35.5 mm shank diameter fits standard tap holders, while the 28 mm square drive ensures secure torque transmission. Its robust construction handles interrupted cuts and abrasive materials without premature failure.

Full specifications

• Tool Type: Machine Tap
• Material: HSSCo (High-Speed Steel with Cobalt)
• Thread Type: G (BSPP - British Standard Pipe Parallel)
• Nominal Thread Size: 1 3/4"
• Thread Standard: DIN 5156 (ISO 228-1)
• Thread Angle: 55°
• Threads Per Inch (TPI): 11
• Cutting Direction: Right-hand
• Overall Length (L1): 140 mm
• Thread Length (L2): 45 mm
• Shank Diameter (d2): 35.5 mm
• Square Size (k): 28 mm
• Number of Flutes: 4
• Surface Finish: Bright
• Manufacturing Process: Ground Thread
• Recommended Materials: Steel, Stainless Steel, Cast Iron, Non-ferrous Metals

Final note

RUKO's precision grinding and cobalt alloy make this tap a reliable choice for professional pipe threading where accuracy and tool life are critical.