Tru-maxx 66254443386 Flap Disc 60 Grit 4.5 in Type 27

Product Description

The TRU-MAXX 66254443386 is a Type 27 zirconia alumina flap disc designed for grinding and blending on steel and stainless steel surfaces. Measuring 4.5 inches in diameter with a 7/8 inch arbor hole, it fits standard angle grinders used across fabrication, welding, and metal finishing trades. The disc runs at a maximum of 13,300 RPM and carries a medium, 60-grit abrasive rating — suitable for stock removal, weld dressing, and surface prep work. The poly-cotton backing provides flexibility and durability under sustained load. This disc belongs to the GP-Z series and features a blue disc color for quick visual identification on the job.

This flap disc is suited for use on carbon steel, stainless steel, and similar ferrous metals in residential and commercial fabrication settings. It is commonly used by welders, metal fabricators, pipefitters, and ironworkers for weld blending, edge deburring, and surface conditioning. The Type 27 flat profile is the standard choice for flat surface and inside-angle work, making it a reliable option for everyday shop and field grinding tasks.

Key Features

• 60-grit zirconia alumina abrasive for aggressive stock removal on ferrous metals
• Type 27 flat profile designed for flat surface and inside-angle grinding
• Maximum rated speed of 13,300 RPM for use with standard 4.5 inch angle grinders
• 7/8 inch arbor hole fits common arbor attachments without adapters
• Poly-cotton backing provides flexibility and extended disc life
• GP-Z series construction rated for use on steels and stainless steel

Compatibility

Compatible with 4.5 inch angle grinders equipped with a 7/8 inch arbor. Rated for use on steels and stainless steel per the GP-Z series material application specifications.

Installation Notes

Installation and disc changes should be performed with the grinder unplugged or the power source locked out. Verify the grinder spindle speed does not exceed the 13,300 RPM maximum rating before mounting. Inspect the disc for damage before each use and discard any disc that shows cracking, missing flaps, or backing separation. Follow ANSI B7.1 safety standards for the mounting and use of abrasive products.