Drill bit Makita D-14978, titanium-coated hex shank, 6 mm, 1 pc

Makita D-14978 is a 6 mm titanium-coated drill bit with a 1/4 inch hex shank supplied as a single piece. It is made from high speed steel (HSS) with a split point geometry and a titanium coating to increase wear resistance. The hex shank provides secure engagement in hex chucks or quick-change adapters, making it suitable for general drilling in metal, wood and some plastics with cordless or corded drivers.

Advantages

The drill bit combines HSS material and a titanium coating for improved durability and cutting performance. The split point reduces walking at the start of drilling, while the 1/4 inch hex shank ensures a firm fit in hex chucks and quick-change systems. The single-piece format makes it convenient for repair, maintenance and on-site tasks.

Suitable for

• Drilling holes in thin-to-medium gauge metal sheets
• General wood drilling and joinery tasks
• Drilling in some plastics and composite materials
• Use with cordless and corded drivers equipped with hex chucks or quick-change adapters

When it may not be suitable

This 6 mm HSS titanium-coated bit is intended for general-purpose drilling and is not optimized for heavy-duty masonry, concrete, or reinforced concrete work. It is also not recommended for prolonged drilling with impact drivers set to impact mode, as the instruction warns against drilling with impact.

Key specifications

• Diameter: 6 mm
• Material: High Speed Steel (HSS)
• Coating: Titanium
• Tip: Split point
• Shank type: 1/4" hex shank
• Pack quantity: 1 piece

How to use

Install the 1/4" hex shank into a compatible hex chuck or quick-change adapter and secure it according to the tool manufacturer’s instructions. Start drilling at low speed to establish the hole, then increase speed as appropriate for the material. Use cutting lubricant when drilling metals to extend bit life and avoid applying impact mode when using impact drivers. Clear chips regularly to maintain cutting efficiency.

What to consider before purchase

• Intended materials: best for metal, wood, and some plastics — not for masonry
• Tool compatibility: requires a 1/4" hex chuck or quick-change adapter
• Single-piece pack: buy multiples if you need spare bits

Usage recommendations

Use appropriate cutting speed and lubrication when drilling metals, avoid impact mode, and replace the bit when cutting performance declines to maintain consistent hole quality.