Schaefer Brush 43803 Spiral Tube Brush 5/16 in Stainless

Product Description

The SCHAEFER BRUSH 43803 is a double stem spiral tube brush designed for cleaning the interior of small-diameter tubes, ports, and passages. It features stainless steel bristles mounted on a stainless steel stem, making it suitable for applications that demand corrosion resistance and durability under repeated use. The brush measures 0.3125 inches in diameter with an overall length of 4.75 inches and a brush scraper length of 3 inches. The 8-32 female threaded connection allows it to attach to compatible extension rods or handles. Technicians in HVAC, plumbing, and industrial maintenance use this brush for tube cleaning, port clearing, and light deburring tasks.

This tube brush is well suited for cleaning refrigerant tubing, heat exchanger ports, small-bore plumbing fittings, conduit ends, and similar confined passages. Its compact diameter and spiral-wound bristle configuration allow it to reach and scrub internal surfaces that flat or straight brushes cannot access. It is commonly used during service, repair, and maintenance procedures where tube cleanliness directly affects system performance or connection integrity.

Key Features

• Double stem spiral construction holds bristles firmly and maintains shape during repeated use
• Stainless steel bristles provide corrosion resistance for wet or chemically exposed environments
• Stainless steel stem construction for added durability and resistance to bending
• 8-32 female threaded connection for use with compatible extension handles or rods
• Compact 0.3125 inch diameter suited for small-bore tube and port cleaning
• 3 inch brush length covers adequate internal surface area per stroke

Compatibility

Designed for use with extension rods or handles featuring an 8-32 male threaded connection. Suitable as a general-purpose tube brush for small-bore cleaning applications in HVAC, plumbing, and light industrial maintenance.

Installation Notes

Thread the 8-32 female connection onto a compatible male-threaded handle or extension rod before use. Ensure the tube or passage to be cleaned is depressurized and clear of flow before inserting the brush. Use steady, controlled strokes to avoid bending the stem in tight bores. Inspect bristles periodically for wear or splaying and replace when cleaning effectiveness diminishes.