Norton 63642543423 Disc Backing Pad Locking Nut

Product Description

The NORTON 63642543423 is a disc backing pad with a locking nut design, built to secure abrasive discs during grinding and finishing operations. It features a 5/8-11 female thread connection and is rated for a maximum speed of 6,600 RPM. The medium-density construction provides consistent disc support across the working surface. This type of backing pad is used in metal fabrication, surface preparation, and finishing work, and is typically installed by machinists, fabricators, and trades professionals working with angle grinders or disc sanders.

This backing pad is suited for applications requiring a secure disc attachment in medium-duty grinding and surface finishing scenarios. The locking nut interface keeps the abrasive disc firmly seated during operation, reducing the risk of disc slippage at speed. It is appropriate for use in shop environments, on-site metal work, and general surface prep tasks where a 5/8-11 threaded spindle is present.

Key Features

• Locking nut design secures abrasive disc firmly to the spindle
• 5/8-11 female thread fits standard angle grinder spindles
• Rated to 6,600 maximum RPM for safe high-speed operation
• Medium density backing provides uniform disc support and contact
• Sold individually — package quantity of 1

Compatibility

Designed as a replacement or spare backing pad for angle grinders and disc sanders equipped with a 5/8-11 threaded spindle.

Installation Notes

Installation should be performed by a qualified operator with the grinder powered off and unplugged before attaching or removing the backing pad. Thread the pad onto the 5/8-11 spindle by hand, then secure per the tool manufacturer's guidance. Never exceed the 6,600 RPM maximum speed rating when selecting a compatible tool. Inspect the pad for wear or damage before each use and replace if the surface shows deterioration.