Walter Surface Technologies 06B458 Flap Disc 80 Grit Type 27

Product Description

The WALTER SURFACE TECHNOLOGIES 06B458 is a Type 27 coated flap disc engineered for grinding and blending on steel and stainless steel surfaces. Built on a wood fiber backing with zirconia alumina abrasive, this disc delivers aggressive stock removal while maintaining a consistent cut throughout its usable life. The 5/8-11 threaded arbor hole mounts directly to standard angle grinders, and the disc is rated to a maximum of 13,300 RPM. At 4.5 inches in diameter and medium grit (80), it fits the most common disc grinder size used in fabrication, maintenance, and pipeline work. The trimmable design allows technicians to expose fresh abrasive as the disc wears, extending service life on demanding applications.

This disc is suited for use on mild steel, carbon steel, and stainless steel in both shop and field environments. Typical applications include weld blending, surface preparation, deburring, and light material removal. The Type 27 flat profile keeps the grinding face flush to the workpiece, making it the correct choice for flat surface work and inside corner blending where a raised-hub disc is not appropriate. It is part of the WALTER SURFACE TECHNOLOGIES Enduro-Flex series, designed for professional metal fabricators, pipefitters, ironworkers, and maintenance welders who need reliable performance across high-cycle grinding tasks.

Key Features

• Zirconia alumina abrasive for aggressive stock removal on steel and stainless steel
• Type 27 flat profile for flush surface grinding and weld blending
• 5/8-11 threaded arbor hole fits standard angle grinders
• Rated to 13,300 RPM maximum operating speed
• Trimmable wood fiber backing extends usable disc life
• Medium grade (80 grit) balances cut rate with surface finish

Compatibility

Compatible with angle grinders equipped with a 5/8-11 threaded spindle and accepting a 4.5-inch disc. Rated for use on steels and stainless steel per manufacturer application data.

Installation Notes

Installation is performed by qualified personnel following standard angle grinder safety procedures. Verify the grinder spindle speed does not exceed the 13,300 RPM disc rating before mounting. Inspect the disc for damage before each use and never operate a cracked or delaminated disc. Always use the appropriate guard per ANSI B7.1 and wear appropriate PPE including a face shield and grinding gloves.