Osborn 0003043400 Knotted Wire End Brush 3/4 in Stainless

Product Description

The OSBORN 0003043400 is a knotted wire end brush designed for aggressive surface preparation and cleaning in tight, hard-to-reach areas. Built with stainless steel fill material, it delivers rust-free performance on materials where carbon steel contamination must be avoided. The brush runs at a maximum of 20,000 RPM and carries a fine grade designation, making it effective for deburring, weld cleaning, and scale removal on confined surfaces. The 3/4-inch brush diameter keeps the working footprint small, allowing access to recesses, ports, and bores that flat or cup brushes cannot reach. This tool is sold individually and does not include a shank.

This end brush is suited for use in fabrication shops, maintenance environments, and field service applications where stainless steel contact surfaces must stay free of ferrous contamination. It mounts to a rotary tool, die grinder, or drill press via a separate shank. Typical users include welders, pipefitters, machinists, and maintenance technicians working on stainless steel pipe, tubing, and fittings. The knotted wire construction provides greater cutting aggression than crimped wire at equivalent diameters, making it a practical choice for removing tight mill scale or weld spatter.

Key Features

• Knotted wire construction for aggressive cutting action on hard-to-reach surfaces
• Stainless steel fill material prevents ferrous contamination on stainless workpieces
• 20,000 RPM maximum rated speed compatible with standard die grinders and rotary tools
• 3/4-inch brush diameter sized for access to confined bores, ports, and recesses
• Fine grade wire in the 0.0101 to 0.0200 inch diameter range
• No shank included — mounts to a separately sourced arbor or chuck

Compatibility

Designed as an OEM-style end brush for use with rotary tools, die grinders, and drill presses that accept standard end brush arbors or shanks; no shank is included with this brush.

Installation Notes

Installation should be performed by a qualified operator familiar with rotary abrasive tooling. Always confirm the spindle speed of the host tool does not exceed the 20,000 RPM maximum rating of this brush before mounting. Wear ANSI-rated eye and face protection as required by OSHA 1910.133 when operating wire brushes at speed. Inspect the brush for bent or broken wires before each use and replace if damage is found.