Drill bit for metal EPM HSS cylindrical 4.2 mm E-500-1042

Drill bit for metal EPM HSS cylindrical 4.2 mm E-500-1042 is a high-speed steel cylindrical shank twist drill designed for drilling steel and other ferrous and non-ferrous metals. The 4.2 mm diameter and HSS material provide wear resistance and stable cutting performance for general metalworking, maintenance and fabrication operations. The cylindrical shank is compatible with standard chucks on hand drills and drill presses, making the bit suitable for both portable and stationary drilling applications.

Advantages

The HSS construction ensures good heat resistance and toughness during drilling of metals, reducing wear and extending tool life compared with carbon-steel alternatives. The cylindrical shank provides secure clamping in standard three-jaw chucks and drill chucks. The 4.2 mm diameter gives a balance between precision and material removal rate for common metalwork tasks, and the general-purpose geometry supports effective chip evacuation and consistent hole quality.

Suitable for

• Drilling mild steel and stainless steel (with appropriate speeds and lubrication)
• Working with non-ferrous metals such as aluminum and copper
• General maintenance and repair tasks requiring small-diameter holes
• Fabrication and light manufacturing where precise pilot or through holes are needed
• Use in hand drills and drill presses

Key specifications

• Material: High-speed steel (HSS)
• Shank type: Cylindrical
• Nominal diameter: 4.2 mm
• Tip style: Twist drill geometry suitable for metal
• Typical applications: Ferrous and non-ferrous metal drilling

How to use

Secure the drill bit in a properly tightened chuck compatible with a 4.2 mm cylindrical shank. Select an appropriate spindle speed and feed rate for the workpiece material; lower speeds are recommended for stainless steel and higher for softer non-ferrous metals. Use cutting fluid or lubricant for improved cooling and chip evacuation when drilling harder or thicker metals. Start drilling with steady, moderate pressure to establish the hole, then maintain consistent feed until the hole is complete. Retract periodically if long holes produce excessive chips or heat.

Usage recommendations

For best results, match drill speed and lubrication to the material: lower speeds and cutting fluid for hard steels, moderate speeds for mild steel, and higher speeds for aluminum. Inspect the bit for wear or dulling before use and replace when cutting performance degrades to maintain hole quality and safety.