Makita D-09793 HSS-G Metal Drill Bit 8.5 x 117 mm

The Makita D-09793 HSS-G metal drill bit is a precision-engineered tool designed for high-performance drilling in various metal surfaces. With a diameter of 8.5 mm and a total length of 117 mm, this drill bit is crafted from high-speed steel, ensuring excellent heat resistance and structural integrity during demanding tasks. Its robust design provides consistent results, making it a reliable choice for both professional metalworking environments and home workshop projects.

Advantages

This drill bit features a specialized chisel edge that facilitates quick and accurate centering, reducing the need for pilot holes and preventing the bit from wandering on the workpiece surface. The HSS-G construction offers superior durability and maintains sharpness over extended periods of use, which translates to cleaner holes and increased efficiency. Its cylindrical shank design ensures compatibility with a wide range of standard drill chucks, providing a secure grip and stable operation during high-speed drilling applications.

Suitable for

• Drilling into mild steel and non-ferrous metals
• Precision metal fabrication tasks
• General maintenance and repair work
• DIY metalworking projects

When it may not be suitable

This drill bit is not intended for drilling into hardened steel, stainless steel, or masonry materials, as these require specialized cobalt or carbide-tipped bits. Using this tool on materials harder than its design specifications may lead to premature dulling or breakage.

Key specifications

• Diameter: 8.5 mm
• Total length: 117 mm
• Material: High-Speed Steel (HSS-G)
• Shank type: Cylindrical
• Tip geometry: Chisel edge

How to use

To achieve the best results, ensure the drill bit is securely tightened in the chuck of your power drill. Mark the drilling location clearly and use a center punch to create a small indentation to guide the bit. Apply steady, moderate pressure while maintaining a consistent drilling speed suitable for the metal being processed. It is recommended to use a cutting fluid or lubricant to reduce friction and heat, which helps extend the lifespan of the drill bit and improves the quality of the hole.

What to consider before purchase

• Verify the chuck capacity of your drill to ensure it accommodates an 8.5 mm shank.
• Confirm the material hardness of your workpiece is compatible with standard HSS-G bits.
• Consider purchasing multiple bits if you are working on high-volume projects to avoid downtime.

Usage recommendations

Always wear appropriate eye protection when drilling metal to prevent injury from flying debris. Regularly inspect the drill bit for signs of wear or damage and replace it if the cutting edge becomes dull to ensure optimal performance and safety.