Bosch HSS Metal Spiral Drill Bit 3.5mm, 2-Piece Set, CYL Shank

The Bosch HSS Metal Spiral Drill Bit 3.5mm is a high-quality tool designed for precision drilling in metal. This 2-piece set features bits with a 3.5mm diameter and a standard cylindrical shank, ensuring compatibility with most conventional drill chucks. Engineered for durability and consistent performance, these drill bits are crafted to withstand the rigors of metalworking, providing clean and accurate holes in various metallic materials.

Advantages

These drill bits offer exceptional reliability due to the high-speed steel construction which maintains sharpness and structural integrity during demanding drilling tasks. The design facilitates efficient chip removal, which prevents overheating and prolongs the lifespan of the tool. Having a 2-piece set provides the convenience of a spare bit, ensuring that work can continue without interruption if one bit becomes worn or damaged during a project.

Suitable for

• Drilling holes in steel and cast iron
• Working with non-ferrous metals
• General metal fabrication tasks
• DIY home improvement projects
• Professional workshop maintenance

When it may not be suitable

These drill bits are specifically optimized for metal applications and may not perform optimally when used on masonry, concrete, or extremely hard materials like hardened steel or ceramics. Using them on materials outside their intended scope may lead to premature dulling or breakage.

Key specifications

• Diameter: 3.5 mm
• Working length: 39 mm
• Total length: 70 mm
• Shank type: Cylindrical
• Material: High-speed steel (HSS)
• Quantity: 2 pieces

How to use

To use the drill bit, insert the cylindrical shank into the drill chuck and tighten it securely. Ensure the workpiece is firmly clamped to prevent movement during the drilling process. Start the drill at a moderate speed and apply consistent, light pressure. It is recommended to use a cutting oil or lubricant to reduce friction and heat, which helps maintain the sharpness of the bit and improves the quality of the hole.

What to consider before purchase

• Verify that your drill chuck supports a 3.5mm diameter shank
• Ensure the material you intend to drill is compatible with HSS bits
• Consider purchasing additional sizes if your project requires a variety of hole diameters

Usage recommendations

Always wear appropriate eye protection when drilling metal to prevent injury from flying debris. Allow the drill bit to cool down periodically during extended use to ensure longevity.