Brush Research Mfg. 4 Helical Nylon Tube Brush 5/8 in

Product Description

The BRUSH RESEARCH MFG. 4 is a single-spiral helical nylon tube brush designed for cleaning, deburring, and surface finishing inside tubing, pipes, and bores. It features a 5/8-inch brush diameter and a 3-inch brush length, giving technicians and machinists enough contact area to work through tight passages efficiently. The nylon fill material is suitable for use on softer surfaces where metal bristles would cause damage. The galvanized steel shank measures 0.19 inches in diameter and brings the overall assembled length to 12 inches, allowing reach into deeper passages without an extension. This brush is typically installed in a hand drill or low-speed power driver.

This tube brush is used in plumbing, HVAC, and light industrial applications where internal bore surfaces require cleaning or light finishing. Common tasks include clearing flux residue from copper tube ends, removing scale or debris from pipe interiors, and prepping bores before fitting assembly. The single-spiral configuration provides consistent radial pressure along the contact length. It is suited for residential and light commercial service work as well as shop use by machinists and fabricators.

Key Features

• 5/8-inch brush diameter for standard small-bore tube and pipe cleaning
• Nylon fill material is non-scratching and compatible with softer base materials
• Single-spiral construction delivers even radial contact pressure along the bore
• 0.017-inch filament diameter provides firm but flexible bristle action
• Galvanized steel shank resists corrosion during wet or coolant-exposed use
• 12-inch overall length allows reach into deeper passages without an extension

Compatibility

Designed as an OEM-style replacement brush for use in standard hand drills or low-speed power drivers accepting a 0.19-inch diameter shank, suitable for small-bore tube and pipe cleaning applications.

Installation Notes

This brush is installed by trade professionals, machinists, and experienced DIYers using a hand drill or drill press at low speed. Secure the shank firmly in the chuck before use and verify the brush rotates concentrically to avoid side-loading the shank. For wet applications, ensure the drill or driver is rated for the environment. Inspect the filaments for wear or deformation before each use and replace when bristle height is significantly reduced.