Drill bit DeWalt DT6674-XJ, 85 mm length, single piece

The DeWalt DT6674-XJ drill bit is an 85 mm long, single-piece replacement bit designed for use with DeWalt systems and standard power drills. It is intended for general-purpose drilling where an 85 mm length is required and is suitable for tasks in masonry, brick, stone, tiles and light concrete. The bit features an anti-slip shank to improve grip in the drill chuck and is typically used for drilling anchor holes, plastic plug and fixing holes, and pipework clearance holes.

Advantages

The construction combines a hardened steel body with core reinforcement and a large-volume machined spiral to support high drilling progress and effective debris removal. A unique hard metal tip joined with low-stress high-temperature copper soldering increases durability and reduces the risk of break-out. The anti-slip shank helps maintain secure bit retention during use, improving stability and control in both professional and DIY applications.

Suitable for

• Drilling anchor and fixing holes in masonry and brick
• Creating clearance holes for pipework
• Drilling through stone, tiles and light concrete for general installations
• Replacement of worn or broken bits in DeWalt-compatible drills and standard chucks

Key specifications

• Length: 85 mm
• Quantity: single piece
• Shank type: anti-slip shank for improved grip
• Material construction: hardened steel body with reinforced core and large-volume spiral fluting
• Tip: hard metal tip joined with low-stress, high-temperature copper soldering for increased durability
• Suitable materials: masonry, brick, stone, tiles, light concrete

How to use

Select the DeWalt DT6674-XJ drill bit and insert it securely into a compatible drill chuck, ensuring the anti-slip shank is seated correctly. Mark the drilling position on the work surface, set the drill to the appropriate speed and mode for the material, and start drilling with steady pressure. Maintain a perpendicular angle to the surface for accurate holes and periodically withdraw the bit to clear dust and debris for effective cutting and cooling. For deeper or longer holes, progress in stages and check alignment as you go.

Usage recommendations

For best results, use appropriate personal protective equipment such as safety glasses and gloves. Match drill speed and hammer function (if applicable) to the material being drilled: lower speeds for tiles and stone, medium to higher speeds or hammer mode for masonry and light concrete. Replace the bit when wear reduces cutting performance or when the tip is damaged to avoid poor hole quality or increased breakage risk.