Schaefer Brush 43502 Tube Brush 0.25in Stainless 8-32 Female

Product Description

The SCHAEFER BRUSH 43502 is a double stem, single spiral tube brush designed for cleaning and deburring small-diameter tubes, ports, and threaded passages. The brush measures 0.25 inches in diameter with a 4.5 inches overall length and a 3 inch brush length. Stainless steel bristles provide corrosion resistance and durability in wet or chemically active environments. The 8-32 female threaded connection allows the brush to mount directly onto a compatible extension rod or power driver, making it suitable for repetitive cleaning tasks in tight-access locations. Licensed trades including HVAC technicians, plumbers, and industrial maintenance techs rely on this style of brush for tube preparation, coil cleaning, and port maintenance.

This tube brush is suited for residential and light commercial maintenance applications where small-bore tube access is required. Typical use cases include cleaning heat exchanger tubes, evaporator coil ports, condensate drain passages, copper tube ends before soldering, and threaded bore surfaces. The stainless steel construction makes it a practical choice in environments exposed to moisture, mild acids, or refrigerants. Its compact 0.25 inch diameter targets passages that larger brushes cannot reach effectively.

Key Features

• Double stem, single spiral construction holds bristles securely under repeated use
• Stainless steel bristles resist corrosion in wet and chemically active environments
• 8-32 female threaded connection for use with standard extension rods or power drivers
• 0.25 inch brush diameter targets small-bore tubes and ports
• 3 inch brush length with 4.5 inch overall length for reach in confined spaces
• Lightweight at 0.02 pounds for extended hand-tool use without fatigue

Compatibility

Designed as a replacement or supplemental tube brush for applications requiring a 0.25 inch diameter, double stem, single spiral brush with an 8-32 female connection. Compatible with standard 8-32 male-threaded extension rods and drive handles.

Installation Notes

Thread the 8-32 female connection onto a compatible male-threaded extension rod or drill chuck adapter before use. Ensure the extension rod is fully seated and secure before applying rotational force to avoid stripping the connection threads. When using with a power driver, set torque and speed to a low setting appropriate for small wire brushes to prevent bristle damage or connection wear. Inspect bristles before each use and replace the brush if wires are splayed, broken, or significantly shortened.