RUKO HGB-III DIN 352 HSS 60° M14 x 2,00 mm sada ručných závitníkov pre ľavý závit, 3-dielna

This RUKO hand tap set is engineered specifically for left-hand threads, a configuration that standard right-hand taps cannot produce. The three-piece set includes taper, plug, and bottoming taps, allowing you to cut a full thread profile even to the bottom of blind holes. Made from bright high-speed steel, it is intended for general-purpose tapping in unalloyed and low-alloyed steels up to 800 N/mm².

Highlights

• Left-hand thread direction for reverse-threaded applications
• 3-piece set: taper, plug, and bottoming taps
• Metric coarse thread M14 x 2.00 mm
• Bright HSS for durability and sharpness
• DIN 352 standard geometry

In daily use

The set covers all stages of hand tapping. Start with the taper tap to gradually form the thread, then use the plug tap for deeper cutting, and finish with the bottoming tap for threads that must reach the bottom of a blind hole. The 60° thread angle and ISO 2 (6H) tolerance class ensure compatibility with standard metric fasteners.

Full specifications

• Thread size: M14
• Thread pitch: 2.00 mm
• Thread direction: Left-hand
• Thread angle: 60°
• Tolerance class: ISO 2 (6H)
• Material: High-speed steel (HSS)
• Standard: DIN 352
• Set composition: 3 pieces (taper, plug, bottoming)
• Overall length: 90 mm
• Thread length: 30 mm
• Shank diameter: 11.0 mm
• Square drive size: 9.0 mm
• Number of flutes: 4
• Surface finish: Bright (uncoated)
• Recommended application: General purpose tapping in unalloyed and low-alloyed steels up to 800 N/mm²

Final note

Left-hand threads are used in rotating assemblies where a standard right-hand thread would loosen under load. This set provides the correct tooling for such specialized work.