Schaefer Brush 43613 Tube Brush 9/16 in Brass Bristles

Product Description

The SCHAEFER BRUSH 43613 is a double stem, single spiral tube brush designed for cleaning the interior of tubes, ports, and bores where thorough mechanical scrubbing is required. The brush measures 9/16 inches in diameter with an overall length of 6.25 inches and a brush scrubbing length of 4 inches. Brass bristles and a brass brush construction deliver corrosion resistance while remaining gentle enough to avoid scoring softer base materials. The 12-24 female threaded connection allows the brush to attach to standard extension rods for extended reach applications.

This tube brush is suited for HVAC, plumbing, refrigeration, and general industrial maintenance tasks where tube and port cleaning is part of routine service. Common applications include cleaning heat exchanger tubes, refrigerant line fittings, condenser ports, and small-bore plumbing fittings. The brass bristle material makes it appropriate for use on copper, brass, and aluminum tubing without introducing ferrous contamination. It is typically used by HVAC technicians, plumbers, and maintenance professionals during cleaning, deburring, or pre-braze preparation tasks.

Key Features

• Double stem, single spiral construction provides consistent bristle contact along the full brush length
• 9/16 inch diameter fits standard tube and port sizes common in HVAC and plumbing applications
• Brass bristles resist corrosion and are safe for use on copper, brass, and aluminum surfaces
• 4 inch brush length delivers effective scrubbing coverage inside tubes and bores
• 12-24 female threaded connection is compatible with standard extension rods
• Compact overall length of 6.25 inches allows use in confined service areas

Compatibility

Designed as an OEM-style replacement tube brush for general maintenance use in HVAC, plumbing, and industrial service applications requiring a 9/16 inch diameter brass bristle brush with a 12-24 female threaded connection.

Installation Notes

This brush is used by hand or with a compatible drill and extension rod — confirm the 12-24 female thread is matched to the extension rod before use. Always depressurize and isolate the system before cleaning any tube or fitting that is part of a pressurized circuit. When using with a rotary tool, operate at low speed to prevent bristle flare or connection thread damage. Dispose of dislodged debris per local shop or environmental guidelines.