Osborn 0005643700 Power Tube Brush 0.385 in Helical Nylon

Product Description

The OSBORN 0005643700 is a helical power tube brush designed for internal bore cleaning, deburring, and surface finishing of tubing and cylindrical passages. The brush measures 0.385 inches in diameter with a 1-inch brush length and an overall length of 5 inches, making it suited for reaching into tight tube sections. The 0.152-inch diameter shank is sized for standard rotary tool chucks and drill presses. Fill material is nylon impregnated with silicon carbide abrasive at a 500-grit super fine grade, which delivers controlled, consistent surface action without aggressive stock removal.

This brush is well suited for light deburring, surface conditioning, and cleaning of tubing bores in HVAC coil assemblies, refrigeration line sets, heat exchanger tubes, and plumbing fittings. The super fine 500-grit rating makes it appropriate for finish work where maintaining dimensional integrity of the bore is a priority. Technicians in HVAC, refrigeration, and plumbing trades use this style of brush during component prep and maintenance tasks where internal tube surfaces require cleaning or light abrasion before soldering, brazing, or pressure testing.

Key Features

• Helical brush pattern for consistent abrasive contact along the full bore surface
• Nylon fill impregnated with silicon carbide abrasive for controlled cutting action
• 500-grit super fine grade suited for surface conditioning and light deburring
• 0.385-inch brush diameter sized for small-bore tube cleaning applications
• 5-inch overall length with 1-inch brush length provides reach into confined passages
• 0.152-inch shank compatible with standard rotary tool chucks and drill presses

Compatibility

Designed for use in standard rotary tools, drill presses, and flex-shaft machines accepting a 0.152-inch diameter shank. Suitable for cleaning and finishing bores in metal tubing and fittings consistent with small-diameter HVAC, refrigeration, and plumbing components.

Installation Notes

This brush is installed and operated by HVAC technicians, plumbers, and refrigeration mechanics using handheld rotary tools or bench-mounted drill presses. Secure the shank firmly in the tool chuck before operation and confirm the tool speed is appropriate for the brush diameter and material being worked. Wear appropriate eye protection and gloves when operating rotary abrasive brushes. Inspect the brush for wear or fiber loss before each use and do not force the brush into bores smaller than the rated diameter.