Dewalt Accessories DW1128 Black Oxide Drill Bit 7/16 in

Product Description

The DEWALT ACCESSORIES DW1128 is a 7/16 inch black oxide drill bit designed for metal, wood, and general-purpose drilling applications. The 135-degree split point tip engages the work surface on contact, eliminating the bit walking common with standard 118-degree points. A patented core diameter geometry distributes stress more evenly along the shank, reducing breakage under load. The black oxide finish lowers friction and extends service life compared to uncoated high-speed steel. This bit ships in a 3-pack, making it a practical choice for job-site stocking by electricians, plumbers, HVAC techs, and general contractors who go through drill bits regularly.

This bit is suited for use on steel framing, pipe hangers, electrical panels, junction boxes, and structural wood members encountered in residential and light commercial work. The 7/16 inch diameter is commonly used for anchor bolt clearance holes, conduit knockout punches, and lag screw pilot holes. The 3-pack quantity supports multi-crew applications or reduces downtime when a bit dulls mid-job.

Key Features

• 135-degree split point starts on contact and prevents walking without a center punch
• Patented core diameter design reduces bit breakage under drilling stress
• Black oxide coating increases wear resistance and reduces friction versus bare HSS
• 7/16 inch diameter suits anchor clearance holes, conduit work, and lag screw pilots
• Sold as a 3-pack for job-site stocking efficiency

Compatibility

Designed as a general-purpose replacement or stocking drill bit compatible with standard 3-jaw drill chucks and right-angle drill attachments used in trade applications.

Installation Notes

Install in a compatible drill chuck and tighten securely before use. Always wear appropriate eye protection when drilling metal or masonry-adjacent materials. When drilling through metal, use a cutting fluid or lubricant to extend bit life and reduce heat buildup. Ensure the workpiece is secured before drilling to prevent rotation or shifting.