3M 7000120398 Disc Pad Hub 2.5 in 5/8-11 Internal Thread

Product Description

The 3M 7000120398 is a disc pad hub designed to mount abrasive face plates to grinders and disc sanders used in metal fabrication, surface prep, and finishing work. The hub features a 5/8-11 internal threaded metal insert that provides a secure, rigid connection between the tool spindle and the face plate. Measuring 2.5 inches in diameter, this hub is compatible with standard grinder spindle threads and is built to handle the rotational demands of aggressive grinding and blending applications. Installation is straightforward and the hub is sold individually.

This disc pad hub is intended for use in industrial and trade settings where abrasive disc systems are standard equipment. It is suited for metal finishing, weld blending, coating removal, and surface conditioning tasks. The hub works across all face plate styles, making it a versatile interface component for shops and field crews running 4.5-inch and 9-inch face plates on right-angle grinders.

Key Features

• 5/8-11 internal threaded metal insert for secure spindle engagement
• Compatible with all face plate styles, including 4.5-inch and 9-inch sizes
• 2.5-inch diameter hub fits standard right-angle grinder configurations
• Lightweight at 0.2 pounds, minimizing added load on the tool
• Sold individually — minimum order quantity of 10 units

Compatibility

Designed for use with 4.5-inch and 9-inch abrasive face plates. The 5/8-11 internal thread is compatible with standard right-angle grinder spindles using that thread specification.

Installation Notes

Installation is performed by threading the hub onto the grinder spindle by hand and securing it according to the tool manufacturer's torque guidance. Always power down and disconnect the grinder from its power source before mounting or removing any hub or face plate assembly. Inspect the hub threads and the spindle threads for wear or damage before each installation. Follow applicable OSHA and ANSI B11 abrasive wheel safety standards when operating grinding equipment.

Technical Specifications

• Thread Size: 5/8-11 Internal
• Diameter: 2.5 inches
• Compatible Face Plate Sizes: 4.5 inches, 9 inches
• Weight: 0.2 pounds
• UPC: 00051144452057
• Unit of Measure: Each

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7000120398