RUKO HGB-DIN352-HSS-60°-M20x2.50mm handtap

Threading holes in tough materials like steel and cast iron demands a tap that stays sharp and cuts cleanly. The RUKO HGB-DIN352-HSS-60°-M20x2.50mm hand tap is built from high-speed steel to create precise metric threads with minimal effort, making it a reliable choice for workshops and maintenance tasks.

Who is it for

Machinists, metalworkers, and maintenance technicians who need to cut or repair M20 coarse threads in unalloyed and low-alloyed steels, malleable cast iron, or non-ferrous metals. Suitable for both through holes and blind holes in general-purpose threading applications.

Main features

• High-speed steel (HSS) construction for durability and heat resistance.
• Metric ISO thread, M20 with 2.50 mm pitch, 60° thread angle.
• Right-hand cutting direction, single tap (plug/middle tap) for general use.
• Four flutes for efficient chip evacuation.
• Bright uncoated finish.
• Conforms to DIN 352 standard.

Specifications

• Product type: Hand tap
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Thread type: Metric ISO thread
• Nominal thread diameter: M20 (20 mm)
• Thread pitch: 2.50 mm (coarse)
• Thread angle: 60°
• Tolerance class: ISO 2 (6H)
• Cutting direction: Right-hand cut
• Tap type: Single tap (plug tap / middle tap)
• Total length (L1): 110 mm
• Thread length (L2): 40 mm
• Shank diameter (d2): 16 mm
• Square drive size (k): 12 mm
• Number of flutes: 4
• Surface treatment: Bright (uncoated)
• Recommended material application: Unalloyed and low-alloyed steels, malleable cast iron, non-ferrous metals
• Application: General purpose threading, through holes and blind holes

Tips

Use a suitable cutting fluid to extend tool life and improve thread finish. For blind holes, ensure adequate chip clearance and consider a spiral point or spiral flute tap if chip evacuation becomes a problem.