Schaefer Brush 93503 Tube Brush 5/16 in Stainless Steel

Product Description

The SCHAEFER BRUSH 93503 is a double stem, single spiral tube brush designed for cleaning the interior of tubes, pipes, and small-diameter bores. It features stainless steel bristles mounted on a stainless steel brush body, making it resistant to corrosion and suitable for use in wet or chemically active environments. The brush measures 5/16 inches in diameter with a brush scraper length of 3 inches and an overall length of 4-1/2 inches. The 8-32 male threaded connection allows attachment to compatible extension handles or drill adapters. This brush is a standard tool for HVAC technicians, plumbers, and maintenance professionals who need reliable bore cleaning in tight spaces.

This tube brush is suited for residential and light commercial maintenance tasks including cleaning refrigerant line fittings, small pipe bores, heat exchanger tubes, and similar passages where debris, scale, or oxidation must be removed before assembly or inspection. The stainless steel construction holds up to repeated use without shedding or rapid wear. The 8-32 male threaded stem provides a secure connection point for extended reach applications. Technicians working on boiler tubes, condenser coils, or plumbing fittings will find this brush sized appropriately for 5/16-inch passages.

Key Features

• Double stem, single spiral construction maintains consistent bristle contact along the full brush length
• Stainless steel bristles resist corrosion and chemical exposure
• Stainless steel brush body for durability in demanding service environments
• 5/16-inch diameter fits small-bore tubes and pipe fittings
• 8-32 male threaded connection for use with extension handles or power adapters
• Compact 4-1/2-inch overall length for access in confined spaces

Compatibility

Designed for use in any application requiring a 5/16-inch diameter tube brush with an 8-32 male threaded connection, including small-bore pipe cleaning, heat exchanger tube maintenance, and fitting preparation in HVAC and plumbing systems.

Installation Notes

This brush is used by HVAC technicians, plumbers, and maintenance professionals for manual or low-speed rotary cleaning of tube interiors. Ensure the system or component being cleaned is depressurized and drained before inserting the brush. When attaching to a power drill, use low speed to avoid deforming the bristles or damaging soft tubing materials. Thread the 8-32 male stem securely into the extension handle or adapter before use to prevent detachment during operation.