Milwaukee HSS Ground Thunder Web Metal Drill Bit - 6.0 x 93mm

This bit is specifically designed for drilling into very hard materials, including various types of metal such as steel, aluminum, and cast iron. It also performs well on curved surfaces.

The THUNDERWEB design features a conical web that thickens towards the back of the bit, increasing its overall strength and preventing breakage. The flute design also aids in rapid chip ejection and heat dissipation.

The 135° split point allows for precision starting without a pilot hole, making it ideal for many applications. However, for extremely hard materials or to ensure absolute precision on very critical surfaces, a pilot hole may still be beneficial.

This specific 6.0mm bit has a working length of 57mm and an overall length of 93mm.

After use, brush off any metal shavings. Store the bit in a dry place, such as a bit organizer or its original packaging, to prevent rust. Applying a cutting lubricant when drilling can also extend its life.

While it may technically cut these materials, this bit is optimized for metal. Using it on wood or plastic might result in oversized holes or rough finishes compared to bits specifically designed for those materials.

The open flute form helps to reduce 'drill drawback,' which is the tendency for the bit to be pulled into the material. It also enhances chip ejection, reducing heat buildup.

Ensure you are using the correct drill speed and sufficient feed pressure. Check if the drill bit is dull; if so, replace it. For very hard materials, consider using a cutting lubricant.

Reduce side-load and excessive bending force. Ensure the bit is properly aligned with the drilling surface. Check for binding in the hole, which might indicate the flutes are clogged with chips; clear them promptly.

Reduce drilling speed and momentarily withdraw the bit to clear chips and allow cooling. Use a cutting fluid or lubricant to aid in heat dissipation and prolong bit life.

Ensure the 135° split point is making firm contact. For extremely hard or slippery surfaces, a center punch mark or a pilot hole may be necessary, although the split point is designed to minimize this.