Osborn 0003074300 End Brush 1/2 in Stainless Steel Knotted Wire

Product Description

The OSBORN 0003074300 is a knotted-wire end brush designed for aggressive surface conditioning, cleaning, and deburring on metal workpieces. The 1/2-inch brush diameter and knotted stainless steel wire construction deliver high cutting action in confined bores, weld joints, and tight interior profiles. Rated to a maximum of 22,000 RPM, this end brush is built for use with die grinders and rotary tools common in fabrication, maintenance, and mechanical service environments. Wire diameter falls in the 0.0101 to 0.0200 inch range, providing a balance of flexibility and aggressiveness suited to medium-duty surface work.

This end brush is suited for metal fabrication shops, pipe and structural weld prep, and general industrial maintenance applications where power tool access to tight spaces is required. It is commonly used by machinists, pipefitters, welders, and maintenance technicians to remove rust, scale, weld spatter, and light burrs from internal and hard-to-reach surfaces. The shank is included, allowing direct chuck mounting without additional adapters.

Key Features

• Knotted stainless steel wire for aggressive cutting action and corrosion resistance
• 1/2-inch brush diameter sized for confined-space and bore work
• 22,000 RPM maximum rating compatible with standard die grinder speeds
• Wire diameter range of 0.0101 to 0.0200 inches for medium-duty surface conditioning
• Shank included for direct chuck mounting
• Not piloted, bridled, encapsulated, or flared — straightforward end brush configuration

Compatibility

Designed for use with die grinders and rotary tools that accept standard shank-mount end brushes. Confirm tool chuck compatibility and maximum RPM rating before installation. No specific OEM or model compatibility is stated for this part.

Installation Notes

Installation should be performed by qualified personnel familiar with rotary abrasive tool safety. Ensure the tool's rated RPM meets or exceeds the 22,000 RPM maximum marked on the brush before mounting. Always power down and disconnect the tool before changing brushes. Wear appropriate eye and face protection in accordance with ANSI standards when operating wire brushes at speed.