Pro-source 04992 Twisted Wire Bristle Brush Brass 1 in

Product Description

The PRO-SOURCE 04992 is a small-diameter twisted wire bristle brush designed for precision cleaning, deburring, and surface prep in tight bores, ports, and passageways. The brush head measures 1 inch in length with a 7/32 inch diameter, making it well-suited for tasks where a standard-size brush cannot reach. Brass fill wire at 0.003 inches in diameter provides effective scrubbing action without aggressive abrasion to softer base metals. A stainless steel shank at 0.062 inches in diameter holds secure in drill chucks or flex-shaft tools, and the overall assembled length is 4 inches.

This brush sees regular use in HVAC, plumbing, and general mechanical trades for cleaning orifice ports, burner ports, valve bodies, and small threaded fittings. It is also common in electrical and instrumentation work for contact cleaning and light corrosion removal. The single spiral construction delivers consistent filament contact around the full bore perimeter. Suitable for hand use or low-speed rotary tool operation wherever controlled, non-damaging cleaning action is required.

Key Features

• Brass fill wire resists corrosion and is safe on softer metals including copper and aluminum
• 1 inch brush length and 7/32 inch brush diameter for access to small bores and ports
• Single spiral construction ensures even filament distribution during rotation
• 0.003 inch wire diameter delivers light-duty cleaning without gouging surfaces
• Stainless steel shank at 0.062 inches fits standard chuck and flex-shaft tool collets
• 4 inch overall length provides adequate reach into recessed openings

Compatibility

Designed as a general-purpose small-bore twisted wire brush compatible with standard rotary tools and drill chucks accepting a 0.062 inch shank diameter.

Installation Notes

This brush is installed by a technician using a hand chuck, drill, or low-speed rotary tool. Confirm the tool chuck accepts the 0.062 inch shank diameter before use. Operate at low to moderate RPM to preserve filament life and avoid flaring the bristles. Wear appropriate eye protection whenever using rotary wire brushes, as wire filaments can shed during use.