RUKO MGB-DIN5156-HSSCo-55°-Rp-2 Machine Tap, HSS-E Co5, Rp 2 inch, 11 TPI, DIN 5156

The RUKO MGB-DIN5156-HSSCo-55°-Rp-2 machine tap is built for cutting British Standard Pipe Parallel threads with a 55° thread angle, a profile that differs from the more common 60° metric or UNC forms. Its HSS-E Co5 cobalt-alloyed high-speed steel body maintains hardness at elevated temperatures, making it suitable for steels up to 1000 N/mm², stainless steels, cast iron and non-ferrous metals.

Highlights

• Thread standard: Rp (BSPP) 2 inch, 11 TPI, 55° thread angle, right-hand cutting
• Material: HSS-E Co5 (5% cobalt high-speed steel), bright uncoated finish
• Manufactured to DIN 5156, tolerance class ISO 2
• Straight flute design for through and blind holes, external coolant application
• Square drive shank per DIN 10 for secure torque transmission

In daily use

This tap is intended for machine tapping operations where a parallel pipe thread is required. The straight flutes provide reliable chip evacuation in both through and blind holes, while the square drive shank ensures positive engagement with tapping heads or holders. The recommended core hole diameter is 57.5 mm. Overall length is 190 mm with a thread length of 65 mm, shank diameter 48 mm and square drive size 36 mm.

Full specifications

• Thread standard: Rp (British Standard Pipe Parallel)
• Nominal thread size: 2 inch
• Pitch: 11 TPI
• Thread angle: 55°
• Cutting direction: Right-hand
• Flute type: Straight flute
• Shank type: Square drive (DIN 10)
• Material: HSS-E Co 5
• Surface finish: Bright (uncoated)
• Overall length: 190 mm
• Thread length: 65 mm
• Shank diameter: 48 mm
• Square drive size: 36 mm
• Recommended core hole diameter: 57.5 mm
• Application type: Machine tap
• Suitable for: Through holes and blind holes
• Tolerance class: ISO 2
• Manufacturing standard: DIN 5156

Final note

For machinists who need a dependable BSPP tap in demanding materials, the cobalt alloy and DIN 5156 geometry deliver consistent thread quality.