Drill bit for metal Makita 3.5×70 mm HSS-TiN 1/4" hex shank

Makita drill bit for metal, 3.5×70 mm, HSS-TiN with a 1/4" hex shank is designed for drilling straight, precise holes in steel and other metals. The high-speed steel (HSS) core provides toughness and resistance to deformation, while the titanium nitride (TiN) coating increases surface hardness and reduces wear. The 1/4" hex shank ensures secure engagement in hand drills and impact drivers equipped with hex chucks, allowing quick bit changes and reduced slippage during use.

Advantages

The HSS-TiN construction improves cutting life and maintains sharpness under repeated use. The combination of a robust HSS body and a hard TiN surface gives a balance between toughness and wear resistance, helping to extend tool life in demanding metalworking applications. The 1/4" hex shank provides reliable retention in hex chucks and quick interchangeability, making this drill bit convenient for workshop and on-site work. Its length and geometry are optimized for drilling through thin and medium-thickness metal sheets with straight, accurate holes.

Suitable for

• Drilling holes in steel, iron, and non-ferrous metal sheets
• Workshop and maintenance tasks requiring precise metal holes
• Construction and installation work with handheld drills and impact drivers

Key specifications

• Diameter: 3.5 mm
• Overall length: 70 mm
• Material: high-speed steel (HSS) core
• Coating: titanium nitride (TiN) for improved hardness and wear resistance
• Shank type: 1/4" hex shank for use in hex chucks and impact drivers
• Intended use: drilling metal (steel and other metals)

How to use

Mark the drilling position and secure the workpiece to prevent movement. Install the 1/4" hex shank into a compatible drill or impact driver with a matching hex chuck and tighten securely. Use an appropriate drilling speed for the metal type and thickness; lower speeds are generally recommended for harder steels. Apply steady, even pressure without forcing the bit. For thicker materials or prolonged drilling, retract occasionally to clear chips and reduce heat buildup. Use cutting fluid where appropriate to improve cooling and extend tool life.

Usage recommendations

For best results, select drilling speeds and feed rates suitable for the specific metal being drilled and use cutting fluid when working with steel to reduce heat and wear. Inspect the bit for wear or damage before use and replace when cutting performance declines.