Value Collection M-33 Screw Lock Wheel Mandrel 3/8 in

Product Description

The VALUE COLLECTION M-33 is a screw lock wheel mandrel designed to mount abrasive grinding or finishing wheels onto rotary tools, die grinders, and drill presses. The mandrel accepts wheels with a 3/8-inch center hole and accommodates wheel widths up to 1/4 inch. The 3/8-inch shank diameter fits standard collets and chucks on compatible rotary equipment. Overall length is 2 inches. The screw lock clamping mechanism secures the wheel firmly during operation, reducing slippage and maintaining concentricity. Machinists, toolmakers, metalworkers, and fabricators use this type of mandrel for precision grinding, deburring, and surface finishing tasks in both shop and field environments.

This mandrel is suited for light-duty rotary grinding and finishing applications in metalworking, fabrication, and maintenance environments. It is commonly installed in die grinders and drill press setups where small-diameter abrasive wheels need a secure, repeatable mount. The 3/8-inch shank makes it compatible with a wide range of standard tool holders. It is appropriate for both bench-top and handheld rotary tool applications where controlled material removal or surface prep is required.

Key Features

• Screw lock design secures abrasive wheels against rotation and lateral movement during use
• Accepts wheels with a 3/8-inch center hole and up to 1/4-inch maximum width
• 3/8-inch shank diameter fits standard collets and drill chucks
• 3/4-inch head and washer diameter provides consistent clamping surface for the wheel face
• Compact 2-inch overall length suits confined work areas and standard die grinder reach
• Lightweight at 0.1 pounds for reduced tool fatigue during extended use

Compatibility

Designed as a replacement or supplemental mandrel for rotary tools, die grinders, and drill presses equipped with a 3/8-inch collet or chuck, and compatible with abrasive wheels rated for a 3/8-inch hole and up to 1/4-inch width.

Installation Notes

Disconnect the rotary tool or die grinder from its power source before mounting or removing any wheel or mandrel. Insert the 3/8-inch shank fully into the collet or chuck and tighten to the tool manufacturer specification before operation. Inspect the abrasive wheel for cracks or damage before securing it with the screw lock mechanism. Always confirm that the wheel speed rating meets or exceeds the maximum RPM of the host tool before running.