STAR-M NO: 04 JAPAN WOOD DRILL BIT - AUGER BITS LONG I

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STAR-M No. 4 Power Drill Auger Bit (Made in Japan)

STAR-M is a renowned Japanese manufacturer specializing in high-precision woodworking tools since 1923. The No. 4 series auger bits are specifically engineered for heavy-duty deep boring, offering a perfect balance of speed, accuracy, and ease of use. These bits are a staple for professional carpenters and timber framers who require clean, straight holes with minimal effort.

Key Features

Self-Feeding Lead Screw: Features a precision-ground, burr-free lead screw that pulls the bit into the wood. This ensures on-target starts and allows for drilling with significantly less downward pressure.
Single Spur and Cutter Design: The single-cutter architecture is designed for smooth, aggressive cutting while producing a clean hole wall. It also makes the bit much easier to sharpen compared to multi-spur designs.
High Carbon Steel Construction: Manufactured from premium Japanese high carbon steel, these bits are hardened for maximum durability and long-term edge retention.
Optimized Flute Geometry: The open helix (spiral) design facilitates rapid chip evacuation, which prevents the bit from clogging or overheating during deep-hole applications.
Versatile Shank: Depending on the size, these bits come with either a round or hexagonal shank, making them compatible with standard 3-jaw chucks and impact drivers.

Technical Specifications

Brand: STAR-M (Japan)
Model/Series: No. 4
Material: High Carbon Steel
Recommended Tool: Electric Power Drill / Impact Driver
RPM Range: * 3.0mm – 19mm: Less than 3,000 RPM
- 19.5mm – 36mm: Less than 1,500 RPM
Material Compatibility: Softwood, Hardwood, and Structural Timber