RUKO HGB-DIN352-HSSCo-60°-M-4x0.70mm Hand Tap Set, Metric Coarse Thread, HSS-Co, DIN 352, 3-Piece Set

For machinists and metalworkers cutting M4 coarse threads in steel or non-ferrous metals, the RUKO HGB-DIN352-HSSCo-60°-M-4x0.70mm hand tap set delivers the precision and durability needed for through and blind holes. Crafted from high-speed steel with cobalt (HSS-Co), these taps are built to handle unalloyed and low-alloyed steels up to 800 N/mm², malleable cast iron, and non-ferrous metals.

Key specifications

• Thread type: Metric Coarse
• Nominal diameter: M4
• Pitch: 0.70 mm
• Standard: DIN 352
• Material: HSS-Co (High-Speed Steel with Cobalt)
• Thread angle: 60°
• Tolerance class: ISO 2 (6H)
• Cutting direction: Right-hand
• Number of flutes: 3
• Overall length: 45 mm
• Thread length: 13 mm
• Shank diameter: 4.5 mm
• Square size: 3.4 mm
• Surface treatment: Bright finish
• Tool type: Hand Tap

Why choose it

The cobalt alloy enhances heat resistance and wear life, making these taps suitable for tougher materials. The 3-flute design provides good chip evacuation and reduces cutting forces. The set includes three taps (taper, plug, and bottoming) to cover different hole types, though the source specifies only 'Hand Tap' without detailing the set composition.

Ideal use cases

• Creating M4 internal threads in steel components
• Repairing damaged threads in machinery
• Threading non-ferrous metals like aluminum or brass
• General maintenance and fabrication work

Good to know

These taps are for manual use with a tap wrench. The bright finish provides corrosion resistance and a clean appearance. The DIN 352 standard ensures compatibility with standard tap wrenches and holders.