Makita D-09868 HSS-G Metal Drill Bit 12x151mm

The Makita D-09868 HSS-G metal drill bit is a precision-engineered tool designed for high-performance drilling in various metal surfaces. Measuring 12 mm in diameter with a total length of 151 mm, this drill bit is manufactured from high-speed steel, ensuring excellent durability and resistance to heat during intensive use. Its ground flute design allows for efficient chip removal, resulting in clean, accurate holes and reduced friction during the drilling process.

Advantages

This drill bit offers exceptional cutting performance due to its high-quality HSS-G construction, which maintains sharpness over extended periods of operation. The precision-ground tip ensures quick centering and prevents the bit from walking on the workpiece surface, allowing for accurate hole placement. Its robust design provides stability and reliability, making it a dependable choice for both professional metalworkers and demanding DIY enthusiasts who require consistent results in metal fabrication tasks.

Suitable for

• Drilling holes in mild steel and carbon steel
• Working with non-ferrous metals like aluminum or copper
• General metal fabrication and repair projects
• Precision drilling for mechanical assembly

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 of the cutting edge.

Key specifications

• Diameter: 12 mm
• Total length: 151 mm
• Material: High-speed steel (HSS-G)
• Tip geometry: Standard ground point

How to use

To achieve the best results, secure your workpiece firmly in a vice or clamp to prevent movement. Mark the center point of the hole clearly before starting. Apply consistent, moderate pressure while maintaining a steady drill speed appropriate for the material being drilled. It is recommended to use a cutting fluid or oil to lubricate the bit, which helps dissipate heat and extends the life of the tool. Always ensure the drill bit is properly seated in the chuck before beginning operation.

What to consider before purchase

• Verify the chuck capacity of your drill to ensure it accommodates a 12 mm shank
• Ensure the material hardness is compatible with standard HSS-G bits
• Check the required hole depth against the 151 mm total length

Usage recommendations

For optimal longevity and performance, avoid overheating the drill bit by using a lower RPM for larger diameters and applying consistent cooling lubrication throughout the drilling process.