Osborn 0003602700 Internal Spiral Brush Steel 1 in X 7/16 in

Product Description

The OSBORN 0003602700 is a single-spiral internal brush designed for cleaning, deburring, and surface finishing inside bores, tubes, and small-diameter passages. It features a steel wire fill with a filament diameter of 0.005 inches, providing firm mechanical action against metal surfaces. The brush head measures 1 inch in length and 7/16 inch in diameter, with an overall assembled length of 3.5 inches including the 1/8-inch shank. It is suited for use with rotary tools, drill presses, and hand drills. Machinists, maintenance technicians, plumbers, and HVAC service professionals commonly use this type of brush for port cleaning, tube prep, and light deburring tasks.

This brush is intended for internal cleaning applications where a small-diameter, short-stroke brush is required. Typical uses include cleaning threaded bores, deburring drilled holes, removing scale or deposits from tubing interiors, and preparing fittings and valve seats before assembly. The 1/8-inch shank is compatible with standard rotary tool chucks and flexible shaft attachments. It is sold individually and is appropriate for both shop and field use across plumbing, HVAC, and general mechanical maintenance.

Key Features

• Single-spiral steel wire construction for consistent, repeatable cleaning action inside bores
• Brush diameter of 7/16 inch suits small-bore tubing, fittings, and valve passages
• 1-inch brush length delivers targeted scrubbing without excess reach into tight passages
• 0.005-inch wire diameter provides firm bristle stiffness for scale and deposit removal
• 1/8-inch shank fits standard rotary tool chucks and drill presses
• 3.5-inch overall length allows secure grip and controlled tool engagement

Compatibility

Designed as an OEM-style replacement and standard tool accessory for use with rotary tools, drill presses, and flexible shaft machines accepting a 1/8-inch shank diameter.

Installation Notes

Install the 1/8-inch shank securely into the tool chuck before operation and confirm the chuck is fully tightened. Always power down or disconnect the rotary tool before changing brushes. Wear appropriate eye protection, as wire bristles can shed under high-speed use. Follow applicable shop safety standards and tool manufacturer guidelines for maximum RPM ratings when using wire-fill brushes.