Drill bit, brand Drill Bit Extreme, model DT5557, 10.0 mm HSS

Drill Bit Extreme DT5557 is a 10.0 mm high-speed steel (HSS) drill bit intended for general-purpose drilling in metal and other suitable materials. The bit is designed for both handheld and machine-mounted use and offers a balance of hardness and toughness typical of HSS tools. It is suitable for producing precise 10 mm holes for maintenance, workshop and construction applications where repeatable performance and heat resistance are required.

Advantages

The high-speed steel construction gives the drill bit wear resistance and improved tolerance to elevated temperatures encountered during prolonged drilling. A 10.0 mm diameter provides a standardized hole size for fittings, fasteners and through-holes. The geometry and material are selected to deliver consistent cutting performance across a range of metals and other machinable substrates, while being compatible with both handheld drills and drill presses.

Suitable for

• Drilling holes in mild steel, alloy steel and non-ferrous metals
• Workshop and maintenance tasks requiring a 10 mm hole
• Machine-mounted drilling in drill presses and CNC machines
• Handheld drilling with appropriate speed and clamping

Key specifications

• Diameter: 10.0 mm
• Material: high-speed steel (HSS)
• Intended use: metal and other suitable machinable materials
• Compatibility: handheld drills and machine-mounted drilling
• Typical applications: through-holes, clearance holes and general-purpose drilling

How to use

Secure the workpiece to prevent movement and select an appropriate clamping method. Mark the drilling point, use a center punch if needed, and choose a drilling speed suitable for 10.0 mm HSS in the material being drilled. Apply steady feed pressure, clear chips periodically, and use cutting fluid when drilling metals to reduce heat and extend tool life. If machining by hand, maintain alignment and control to avoid walking and ensure a clean hole.

Usage recommendations

For best results, use slower spindle speeds and light to moderate feed rates when drilling hard metals, and apply cutting fluid or lubricant to reduce friction and heat. Replace the bit if excessive wear, chipping or loss of cutting performance is observed. Store the drill bit in a dry place to prevent corrosion.