Cutting Disc DeWalt DT43903-QZ 125 x 1.2 mm INOX for Metal

DeWalt cutting disc DT43903-QZ 125 x 1.2 mm INOX is a thin abrasive wheel engineered for cutting stainless steel and other ferrous and non-ferrous metals. With a 125 mm diameter and 1.2 mm thickness, the disc is intended for use with angle grinders that accept 125 mm wheels and provides precise, fast cuts while minimizing material loss and heat buildup.

Advantages

The 1.2 mm thin design delivers narrow kerf cuts for reduced metal waste and faster cutting speed. Specifically formulated abrasive and reinforcement offer improved durability when cutting stainless steel, helping maintain blade shape and cut quality over multiple operations. The disc balances cutting performance with control, producing cleaner edges and reducing the need for secondary finishing in many metalworking tasks.

Suitable for

• Cutting stainless steel sheets and profiles
• Automotive bodywork and repair cuts
• Metal fabrication and assembly tasks
• Plumbing and pipe cutting where clean, accurate cuts are required

Key specifications

• Diameter: 125 mm
• Thickness (kerf): 1.2 mm
• Material suitability: stainless steel and general metal cutting
• Mounting: for angle grinders that accept 125 mm discs
• Typical operating speed: compatible with standard 125 mm grinder RPM ranges

How to use

Mount the cutting disc on a compatible 125 mm angle grinder following the grinder manufacturer’s instructions and ensure the correct flange and guard are fitted. Secure the workpiece and mark the cut line, then start the grinder and allow it to reach full speed before engaging the disc with the material. Use steady, consistent pressure and a straight cutting motion; avoid twisting the disc or applying excessive force that could cause binding. After cutting, allow the disc to stop completely before setting the tool down.

Usage recommendations

Always wear appropriate personal protective equipment, including eye protection, hearing protection, gloves and respiratory protection when cutting metal. Check the disc for damage before use and do not use if cracked or chipped. Follow the maximum speed rating of both the disc and the angle grinder, and use the guard to protect from sparks and debris. Use shorter, controlled cuts for thicker material and allow discs to cool between extended cutting sessions to prolong service life.