RUKO HGB-DIN352-HSS-M20x2.5mm Hand Tap Set, Metric Coarse, 3-Piece, HSS, DIN 352

The RUKO HGB-DIN352-HSS-M20x2.5mm is a 3-piece hand tap set for cutting metric coarse threads with a 2.5 mm pitch. Unlike single taps, this set includes rougher, second, and finisher taps, enabling progressive cutting for cleaner, more accurate threads in manual applications.

Highlights

• Complete set: rougher, second, and finisher taps for sequential thread cutting
• Precision ground from high-speed steel (HSS) for durability and clean cuts
• Conforms to DIN 352 for reliable interchangeability
• Suitable for unalloyed and alloyed steels up to 800 N/mm², cast iron, and non-ferrous metals

In daily use

This tap set is intended for manual thread cutting in through holes or blind holes. The rougher tap removes most material, the second tap refines the thread, and the finisher tap brings it to final size. The bright finish reduces friction and helps clear chips. The square drive accommodates a standard tap wrench.

Full specifications

• Thread type: Metric coarse
• Thread size: M20
• Thread pitch: 2.5 mm
• Standard: DIN 352
• Material: High-speed steel (HSS)
• Number of taps: 3 (rougher, second, finisher)
• Cutting direction: Right-hand
• Tolerance class: ISO 2 (6H)
• Total length: 110 mm
• Thread length: 40 mm
• Shank diameter: 16 mm
• Square drive size: 12.5 mm
• Surface treatment: Bright

Final note

For best results, use a suitable cutting fluid and ensure proper alignment. The set is designed for manual use; machine tapping requires different tooling.