Drill bit DeWalt DT20528 for metal Black & Gold 9.0 mm

DeWalt DT20528 Black & Gold 9.0 mm drill bit is designed for drilling metal with a focus on durability and efficient chip evacuation. The carbide-coated tip improves wear resistance and maintains cutting performance in steel and other ferrous materials. Spiral flute geometry helps clear chips and reduce heat build-up, making this 9.0 mm bit suitable for both hand-held drills and drill presses in workshop, construction and maintenance environments.

Advantages

The carbide-coated (Black & Gold) tip extends tool life and resists abrasion when cutting through harder metals. Spiral flutes ensure fast chip removal and more consistent drilling, while the 9.0 mm diameter provides a common hole size for fasteners and fittings. The bit is compatible with standard drill chucks and is intended for use on steel and other ferrous materials, delivering reliable penetration and reduced tendency to clog.

Suitable for

• Drilling holes in mild steel, stainless steel and other ferrous metals
• Workshop and general maintenance drilling tasks
• Use with hand-held drills and drill presses
• Preparing holes for bolts, screws and rivets in metal structures

When it may not be suitable

This drill bit is optimized for metal and may not deliver optimal results in masonry, concrete, tile, wood or plastics. For very hard alloys, hardened steel, or materials requiring specialized coatings, a dedicated cobalt, solid-carbide or titanium nitride bit specifically rated for that application may be preferable. Using the bit at excessive speed or without appropriate coolant can reduce life and increase wear.

Key specifications

• Diameter: 9.0 mm
• Tip: Carbide-coated (Black & Gold finish)
• Material suitability: Steel and other ferrous metals
• Flute type: Spiral flute for chip evacuation
• Intended use: Suitable for hand-held drills and drill presses

How to use

Secure the drill bit firmly in the drill chuck and set appropriate rotational speed for metal drilling (lower speeds for larger diameters and harder materials). Mark the drilling point and, when necessary, start with a center punch to prevent walking. Apply steady, moderate pressure and allow the bit to cut without forcing; clear chips regularly or use coolant/lubricant to reduce heat and prolong bit life. Withdraw the bit occasionally to improve chip evacuation, especially when drilling deep holes.

What to consider before purchase

• Confirm the 9.0 mm diameter matches the required hole size for fasteners or fittings
• Ensure the bit is intended for the base material (ferrous metals)
• Check compatibility with your drill chuck and operating speed range
• Consider coolant or lubricant availability for prolonged use and harder metals

Usage recommendations

To maximize life and performance, use moderate speed and cutting lubricant when drilling ferrous metals, avoid excessive axial force, and clear chips frequently. For repetitive or demanding work, monitor bit wear and replace before the cutting edge becomes rounded to maintain hole quality.