Norton 63642543425 Disc Backing Pad Locking Nut

Product Description

The NORTON 63642543425 is a hard-density disc backing pad designed to secure abrasive discs during grinding and surface preparation work. It features a 5/8-11 female thread connection, which is the standard locking nut style used across a wide range of angle grinders and right-angle disc tools. Rated to a maximum of 8,600 RPM, this backing pad is built for use with compatible abrasive discs in applications where consistent disc retention and backing rigidity are required. It is installed and used by metal fabricators, pipefitters, and general industrial tradespeople performing grinding, blending, or finishing operations.

This backing pad is suited for angle grinder applications in both residential shop and commercial fabrication environments. The locking nut style provides secure disc attachment for surface grinding, weld blending, and material removal tasks. It is appropriate for use wherever a 5/8-11 female thread interface is required and a hard-density backing is preferred for firm disc support during aggressive stock removal or surface conditioning work.

Key Features

• Locking nut backing pad style for secure abrasive disc retention
• 5/8-11 female thread — standard interface for common angle grinders
• Maximum rated speed of 8,600 RPM
• Hard density construction provides firm, consistent disc support
• Single-piece packaging; individual replacement unit

Compatibility

Designed as a replacement or spare backing pad for angle grinders and disc tools with a 5/8-11 spindle thread, where a locking nut style female thread interface is specified.

Installation Notes

Installation and disc changes should be performed by qualified tradespeople with the grinder powered off and unplugged or locked out per applicable OSHA lockout/tagout procedures. Always confirm the spindle thread size matches the 5/8-11 female thread before mounting. Do not exceed the 8,600 RPM maximum speed rating when selecting a compatible tool or abrasive disc. Inspect the backing pad for wear or damage before each use and replace if deformation or cracking is present.