Drill bit DeWalt DT4579-QZ — single pack, metal/wood drilling use

DeWalt DT4579-QZ drill bit supplied as a single pack is designed for general-purpose drilling in metal and wood. This replacement bit is compatible with most powered drills and intended for repair, maintenance and construction tasks. The bit is suitable for rapid drilling of clean, accurate holes in hardwood, softwood, wooden boards and plaster boards, and features a threaded pilot point that pulls the forstner-style cutting head through the material for controlled penetration.

Advantages

The drill bit’s anti-slip shank has three flat surfaces to prevent rotation in the drill chuck and to ensure consistent power transmission. Its geometry produces quick, accurate holes with reduced walking and improved centring. Supplied as a single unit, the bit is convenient to keep as a spare for on-site repairs and routine maintenance. The threaded pilot point and cutting profile improve feed control and reduce surface tear-out on wood and board materials.

Suitable for

• Drilling precise holes in hardwood and softwood
• Creating openings in wooden boards and plywood
• Drilling into plasterboard and similar sheet materials
• Repair and maintenance tasks requiring a reliable spare bit
• General construction and carpentry chores

Key specifications

• Intended materials: wood, hardwood, softwood, wooden boards, plasterboard
• Shank type: anti-slip with three flat surfaces for chuck grip
• Point: threaded pilot point for positive pull-through and controlled entry
• Pack quantity: single piece
• Application: general-purpose drilling, maintenance and construction

How to use

Install the bit into a compatible drill chuck and tighten securely against the flat surfaces of the shank to prevent slippage. Position the threaded pilot point on the intended drill location and start the drill at low speed to establish the entry. Increase speed and apply steady pressure, allowing the threaded pilot point to pull the cutting head through the material. Withdraw the bit periodically to clear chips when drilling deeper holes and to avoid overheating. For metal use, choose appropriate speeds and cooling methods; for wood use, maintain steady feed to avoid splintering.

Usage recommendations

Use appropriate personal protective equipment, clamp workpieces when possible, and select drill speeds suitable for the material. Store the bit dry and protected to maintain cutting performance. Replace the bit when wear or damage affects hole quality or safety.