3M 7000045746 Fibre Disc Backup Pad 4.5in 5/8-11

Product Description

The 3M 7000045746 is a TN Quick Change Fibre Disc Backup Pad designed to support and drive fibre discs in grinding and finishing applications. Measuring 4.5 inches in diameter with a 5/8-11 internal thread mount, this backup pad provides a rigid backing surface that maintains disc contact across the workpiece. It is built for use with angle grinders and compatible power tools in metal fabrication, weld blending, and surface preparation tasks. Installers and fabricators working in light industrial or field environments rely on this type of pad for consistent disc retention and repeatable material removal rates.

This backup pad is suited for use in metalworking shops, fabrication facilities, and job-site environments where fibre discs are the standard abrasive choice. The 5/8-11 internal thread makes it compatible with standard angle grinder spindles common in commercial and industrial trades. It supports quick disc changes during production runs or service work where downtime needs to be minimized.

Key Features

• 4.5-inch diameter backing surface sized for standard fibre discs
• 5/8-11 internal thread mount fits common angle grinder spindles
• TN Quick Change design allows faster disc swaps during use
• Lightweight construction at 0.25 pounds reduces operator fatigue
• Sold individually per unit of measure

Compatibility

Designed as an OEM-style replacement backup pad for use with 4.5-inch fibre discs and angle grinders equipped with a standard 5/8-11 threaded spindle.

Installation Notes

Installation should be performed by a qualified operator familiar with angle grinder safety procedures. Always power down and disconnect the grinder from its power source before mounting or removing the backup pad. Verify that the spindle thread and pad thread are clean and free of debris before tightening. Follow applicable ANSI and tool manufacturer safety standards for abrasive wheel accessories.

Technical Specifications

• Diameter: 4.5 inches
• Thread Size: 5/8-11 Internal
• Weight: 0.25 pounds
• UPC: 00051111565735

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000045746