48R627 - Walter Clamping Nut for 4.5in to 6in Backing Pads

Technical Overview of the Walter 48-R-627 Clamping Nut

The Walter 48-R-627 is a precision-engineered clamping nut designed to serve as the primary mounting hardware for resin fiber discs on angle grinders. Manufactured by Walter Surface Technologies, this component is critical for maintaining the safety and performance of abrasive setups. It is specifically calibrated to fit Walter's range of backing pads, including the Turbo and Coolcut series, ensuring that the abrasive media remains firmly centered and secured under high-RPM rotation.

This unit features a standard 5/8"-11 internal thread, making it compatible with the vast majority of 4-1/2 inch, 5 inch, and 6 inch angle grinders available in the North American market. The nut is constructed from high-grade steel to withstand the torque and heat generated during aggressive grinding and sanding operations. Its geometry is designed to sit flush within the depressed center of standard fiber discs, allowing the operator to utilize the maximum surface area of the abrasive without mechanical interference from the mounting hardware.

Proper mounting of abrasive discs is essential for preventing vibration, disc slippage, and potential operator injury. The 48-R-627 provides the necessary clamping force to hold the disc against the backing pad's ribs, optimizing the cooling airflow and cutting efficiency. It is an indispensable spare part for industrial MRO environments where angle grinders are in constant use.