Osborn 0005640300 Power Tube Brush Helical Nylon

Product Description

The OSBORN 0005640300 is a helical power tube brush designed for internal bore cleaning, deburring, and surface finishing in tight cylindrical passages. The brush measures 0.05 inches in diameter with a 0.5-inch brush length and a 4-inch overall length, making it well suited for fine-detail work inside small-diameter tubes and ports. The 0.023-inch shank diameter fits standard rotary tool chucks and machine spindles. Fill material is nylon loaded with alumina silicate abrasive, rated at 1000 grit for ultra fine surface conditioning. HVAC technicians, machinists, and industrial maintenance professionals use this brush for light cleaning and finishing tasks where aggressive metal bristles would damage soft tube walls.

This brush is applied in situations requiring controlled abrasive action inside small-bore tubing, heat exchanger tubes, instrument ports, and similar confined cylindrical surfaces. The helical fill pattern promotes consistent contact around the full bore circumference during rotation. It is appropriate for residential and commercial HVAC coil maintenance, refrigeration component cleaning, and general mechanical assembly line prep work where a fine finish is required without dimensional stock removal.

Key Features

• 0.05-inch brush diameter for access to small-bore tubes and ports
• Helical fill pattern for full circumferential contact during rotation
• Nylon fill with alumina silicate abrasive for ultra fine surface conditioning
• 1000 grit rating for light deburring and finish work
• 0.023-inch shank diameter compatible with standard rotary tool chucks
• 4-inch overall length provides reach into recessed bores

Compatibility

Designed as an OEM-style replacement brush for use with standard rotary power tools and machine spindles accepting a 0.023-inch diameter shank.

Installation Notes

This brush is installed by trade professionals or machinists in rotary hand tools, drill presses, or machine spindles. Confirm the tool chuck accepts the 0.023-inch shank before mounting. Operate within the maximum RPM rating of the tool and brush to avoid fill material fatigue. Eye protection is required when operating any rotary abrasive brush.