3M 7100010688 Hookit 236U Disc 5 Inch P220 Grit Ao

Product Description

The 3M 7100010688 is a Hookit coated abrasive disc designed for high-production sanding and general-purpose surface preparation across a wide range of materials. Built on a C-weight paper backing with premium aluminum oxide mineral, this 5-inch disc delivers aggressive cut and extended service life. The open-coat construction combined with a load-resistant coating keeps the disc surface clear longer, maintaining cut rate through the full life of the abrasive. At P220 grit, it is suited for fine finishing passes where a smooth, uniform surface is the goal before topcoat or final inspection.

This disc is used in industrial and trade finishing environments where production throughput matters. Common applications include sanding paint, primer, bare wood, metal, plastic, and composite surfaces including fiberglass. The Hookit attachment system allows for rapid disc changes and disc reuse without adhesive, making it practical on random orbital and orbital sanders equipped with a Hookit-compatible backup pad. It is well established in automotive refinishing, woodworking shops, and general fabrication settings.

Key Features

• Premium aluminum oxide mineral for fast cut and durability across multiple surface types
• C-weight paper backing provides extra support for aggressive sanding compared to lighter backings
• Open-coat construction reduces loading and extends abrasive life
• Load-resistant coating maintains cut rate through the working life of the disc
• Hookit attachment system enables fast, tool-free disc changes and disc reuse
• P220 grit for fine finishing and pre-topcoat surface prep

Compatibility

Designed for use with Hookit-compatible random orbital and orbital sanders equipped with a 5-inch Hookit backup pad.

Installation Notes

Installation and disc changes should be performed with the sander powered off and unplugged or the air supply disconnected. Ensure the backup pad is clean and free of debris before attaching the disc to maintain proper seating and prevent premature release. Inspect the disc for tears or damage before each use and replace if the backing or mineral shows signs of failure. Follow applicable workplace safety guidelines for abrasive operations, including eye and respiratory protection.

Technical Specifications

• Disc Diameter: 5 inches
• Grit: P220
• Abrasive Mineral: Aluminum Oxide
• Backing Weight: C-Weight Paper
• Coat Type: Open Coat
• Attachment Type: Hookit
• Maximum Speed: 12000 rpm
• Package Dimensions: 7.2 x 5.9 x 6.3 inches
• Weight: 0.01 pounds
• UPC: 00051141555836

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100010688