RUKO HGB-II DIN 352 HSS 60° M3 x 0.50 mm Left-Hand Machine Tap

When a standard right-hand tap cannot cut threads in the opposite direction, this left-hand M3 machine tap provides the solution. It is built to DIN 352 from high-speed steel with a bright finish and a 60° thread angle, making it suitable for general-purpose threading in steels up to 800 N/mm², cast iron, and non-ferrous metals.

Who is it for

Machinists, metalworkers, and maintenance technicians who need to create left-hand metric threads in through-holes or blind holes. It works with standard tap wrenches and T-handle tap wrenches.

Main features

• Metric coarse thread M3 with 0.50 mm pitch
• Left-hand thread direction
• High-speed steel (HSS) construction
• Straight flutes with 3 flutes for efficient chip evacuation
• Ground thread for accuracy and durability
• Bright uncoated finish

Specifications

• Thread type: Metric coarse
• Thread size: M3
• Thread pitch: 0.50 mm
• Thread direction: Left-hand
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Tolerance class: ISO 2 (6H)
• Surface finish: Bright (uncoated)
• Overall length: 40 mm
• Thread length: 11 mm
• Shank diameter: 3.5 mm
• Square drive size: 2.7 mm
• Flute type: Straight flutes
• Number of flutes: 3
• Tap type: Hand tap (single)
• Application: General purpose threading
• Recommended material: Steels (up to 800 N/mm²), cast iron, non-ferrous metals
• Manufacturing process: Ground thread

Tips

Use a suitable cutting fluid when tapping to extend tool life and improve thread finish. Ensure the tap is aligned perpendicular to the workpiece to avoid breakage, especially in blind holes.