Gibraltar 22720.0086 Rolling Ball Clamping Screw M8

Product Description

The GIBRALTAR 22720.0086 is a headless rolling ball end clamping screw designed for precision fixturing and workholding applications. Machined from steel with a steel rolling ball, it accepts an M8 thread and measures 31.2mm overall length. The rolling ball end allows for angular contact against workpieces, distributing clamping force evenly without marring surfaces. With a maximum load capacity of 3,272 pounds, it is suited for demanding clamping tasks on machine tools, jigs, and fixtures. A 4mm hex key drives the headless body, keeping the profile low in tight setups. Machinists, toolmakers, and fixture builders are the primary installers.

This clamping screw fits standard M8 threaded fixture plates, modular workholding systems, and custom jig bodies used in machining centers, mills, and drill press setups. The headless design allows the screw to be seated flush or sub-flush within a clamping block, making it practical in low-clearance tooling environments. It is sold individually and is appropriate for both new fixture builds and direct replacement of worn or damaged clamping screws in existing assemblies.

Key Features

• Headless body driven by a 4mm hex key for low-profile installation
• Rolling ball end allows angular contact without surface damage
• M8 thread size for compatibility with standard fixture hardware
• 3,272 lb maximum load capacity for heavy-duty clamping duty
• All-steel construction — screw body and ball both steel
• 31.2mm overall length suits common fixture plate depths

Compatibility

Designed as a direct-fit replacement or new-build component for M8 threaded workholding fixtures, clamping blocks, and modular tooling systems requiring a headless rolling ball end clamping screw.

Installation Notes

Installation is performed by machinists or toolmakers using a 4mm hex key. Confirm the receiving threaded hole is clean and free of debris before threading in the screw. Do not exceed the rated 3,272 lb maximum load capacity for the clamping setup. Inspect the rolling ball periodically for wear or flat spots that could reduce clamping effectiveness.