JIS HSS‑M2 Spiral Flute Form C Machine Tap Set includes 10‑piece machine taps, purpose‑built for blind‑hole tapping applications. Its Form‑C spiral flute structure moves chips upward and backwards out of the hole, preventing chip accumulation at the bottom of blind holes, which is a common cause of tap breakage and damaged threads. Suitable for CNC and automated machine tapping in general metal processing.
Key Specifications
Standard: JIS industrial standard for consistent thread precision
Material: HSS‑M2 High‑Speed Steel, delivers balanced hardness and toughness
Flute Type: Spiral Flute Form C, backward chip evacuation, dedicated for blind holes
Shank: Square drive shank, fits standard tap holders for machine tapping
Package: Clear plastic storage box for storage, transport and tool protection
Key Features
✅ JIS Standard: Strict JIS specification ensures accurate and uniform thread profile
✅ HSS‑M2 High‑Speed Steel Substrate: Excellent toughness and cutting performance, resists chipping during tapping
✅ Spiral Flute Form‑C Geometry: Upward spiral flutes remove chips backward, avoid chip packing at blind‑hole bottom
✅ 10‑Piece Assorted Set: Covers most commonly‑used thread sizes for workshop daily tasks
✅ Square Drive Shank: Compatible with machine tap holders for CNC and power tapping
✅ Transparent Storage Case: Keeps taps separated, protected from impact and rust
Applications
Perfect for machine tapping, CNC machining, maintenance and repair work. Works well on carbon steel, alloy steel and ferrous metals. Mainly designed for blind‑hole threading, not recommended for through‑holes. Widely used in machinery shops, auto‑parts fabrication and general metalworking.
Usage Note
Spiral flute Form‑C taps evacuate chips towards the shank side. This design is optimized for blind holes. For through‑hole tapping, spiral‑point taps should be selected as an alternative tooling solution.
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