Makita D-17376 HSS-Co Metal Drill Bit 5.5 x 93 mm

The Makita D-17376 HSS-Co metal drill bit is a high-performance tool engineered for precision drilling in demanding metalworking environments. With a diameter of 5.5 mm and a total length of 93 mm, this bit is crafted from high-speed steel alloyed with 5% cobalt, providing superior heat resistance and structural integrity when working with tough materials. Its robust design ensures consistent performance and clean hole formation, making it a reliable choice for both professional tradespeople and serious DIY enthusiasts.

Advantages

The primary advantage of this cobalt-alloyed drill bit is its exceptional durability and ability to maintain a sharp cutting edge even under high-temperature conditions. The inclusion of 5% cobalt significantly extends the lifespan of the tool compared to standard HSS bits, allowing for efficient drilling in hardened materials. Furthermore, the split point geometry prevents the bit from wandering on the workpiece surface, ensuring accurate starts and reducing the need for center punching. The cylindrical shank design provides broad compatibility with standard drill chucks, facilitating quick and secure tool changes.

Suitable for

• Drilling into stainless steel and alloyed steels
• General metal fabrication and repair tasks
• Construction and installation projects requiring precise holes
• Industrial maintenance and workshop applications

When it may not be suitable

This drill bit is specifically optimized for metal and stainless steel applications. It is not recommended for use on soft materials like wood or plastic, where standard high-speed steel bits would be more cost-effective and efficient. Additionally, it is not designed for masonry or concrete drilling, as the cutting geometry and material composition are not suited for abrasive mineral surfaces.

Key specifications

• Material: HSS with 5% Cobalt
• Diameter: 5.5 mm
• Total length: 93 mm
• Shank type: Cylindrical
• Point type: Split point
• Compatibility: Suitable for stainless steel and various metals

How to use

To achieve the best results, secure your workpiece firmly to prevent vibration or movement during the drilling process. Align the drill bit with the intended mark and apply steady, moderate pressure while maintaining a consistent rotational speed. It is recommended to use a cutting fluid or lubricant when drilling into stainless steel to reduce friction, dissipate heat, and prolong the life of the bit. Always ensure the drill is set to the appropriate speed for the material being processed.

What to consider before purchase

• Verify the required diameter for your specific application
• Ensure your drill chuck is compatible with the cylindrical shank
• Consider purchasing multiple bits if working on large-scale projects
• Check that your drill has variable speed control for optimal metal drilling

Usage recommendations

For optimal performance and longevity, always use a low drilling speed when working with hard metals and stainless steel. Applying consistent pressure and using high-quality cutting oil will prevent the bit from overheating and ensure clean, burr-free holes.