RUKO HGB-III DIN 352 HSS 60° M18 x 2.50 mm Left-Hand Hand Tap

When a left-hand thread is required, standard right-hand taps are useless. The RUKO HGB-III DIN 352 HSS 60° M18 x 2.50 mm Left-Hand Hand Tap solves that problem by cutting metric coarse left-hand threads with precision and reliability. This single tap is manufactured from high-speed steel (HSS) and conforms to DIN 352, making it suitable for hand tapping in general-purpose steels and non-ferrous metals.

Who is it for

This tap is intended for machinists, maintenance technicians, and metalworkers who need to create or repair left-hand M18 threads. It is ideal for applications where reverse-threaded fasteners are used, such as in rotating machinery, automotive components, and specialized fixtures.

Main features

• Left-hand cutting direction for reverse-thread applications
• Metric coarse thread: M18 x 2.50 mm
• DIN 352 standard hand tap
• High-speed steel (HSS) for durability and wear resistance
• 60° flank angle for standard metric threads
• Straight flute geometry for efficient chip evacuation in through holes
• Square drive shank for secure tap wrench engagement
• Bright surface finish

Specifications

• Thread type: Metric Coarse
• Thread direction: Left-hand
• Nominal diameter: M18
• Pitch: 2.50 mm
• Standard: DIN 352
• Material: High-Speed Steel (HSS)
• Application: Hand tapping
• Flank angle: 60°
• Tolerance class: 6H
• Shank type: Square drive
• Shank diameter: 14.0 mm
• Square drive size: 11.0 mm
• Total length: 110 mm
• Thread length: 38 mm
• Number of taps: 1 (single tap)
• Surface treatment: Bright
• Cutting edge geometry: Straight flute
• Recommended material: General purpose steel, non-ferrous metals

Tips

Use a suitable tap wrench with a square drive opening of 11.0 mm. Apply cutting oil to reduce friction and improve thread finish. For best results, start the tap perpendicular to the workpiece and reverse periodically to break chips. This tap is intended for hand tapping; do not use in machine tapping operations unless appropriate conditions are met.