RUKO EGB-DIN352-HSSCo-60°-M12x1.75mm Second Tap

Precision-ground from HSSCo high-speed steel with cobalt, this second tap cuts metric coarse threads with a 60° profile angle and 6H tolerance class.

Overview

The RUKO EGB-DIN352-HSSCo-60°-M12x1.75mm is a second tap (Mittelschneider) for manual thread cutting. It follows the taper tap in the sequence and produces full thread depth to the bottom of blind holes. The DIN 352 geometry ensures reliable chip evacuation through three flutes.

What stands out

• HSSCo material withstands high cutting temperatures and extends tool life.
• Bright uncoated surface reduces friction and prevents chip welding.
• Right-hand cutting direction suits standard clockwise threading.
• Square drive size 7.0 mm fits standard tap wrenches.

Technical details

• Thread type: Metric coarse
• Nominal diameter: 12 mm
• Thread pitch: 1.75 mm
• Standard: DIN 352
• Tap type: Second tap
• Material: HSSCo
• Thread profile angle: 60°
• Cutting direction: Right-hand
• Tolerance class: 6H
• Overall length: 80 mm
• Thread length: 29 mm
• Shank diameter: 9.0 mm
• Square drive size: 7.0 mm
• Number of flutes: 3
• Surface treatment: Bright

Our verdict

A dependable second tap for general hand tapping in steels up to 800 N/mm², cast iron, and non-ferrous metals. Its cobalt alloyed steel and precise geometry deliver clean threads in through or blind holes.