Gibraltar 22720.0055 Headless Rolling Ball Clamping Screw

Product Description

The GIBRALTAR 22720.0055 is a headless rolling ball end clamping screw designed for precision workholding and fixturing applications. Constructed from steel with a steel rolling ball end, this screw provides consistent, low-friction clamping force against a workpiece or fixture surface. The rolling ball contact point allows slight angular misalignment while maintaining firm, uniform pressure. At 16mm overall length (OAL) and rated to a maximum load capacity of 1,011 pounds, it suits moderate-duty clamping tasks in tooling plates, jigs, and machine fixture assemblies. Machinists, toolmakers, and fixture builders are the primary installers of this component.

This clamping screw is typically used in machine shop and manufacturing environments where positive, adjustable clamping pressure is needed against a workpiece, stop block, or sliding fixture element. The headless design allows the screw to sit flush or recessed within a tapped hole, keeping the fixture profile low and unobstructed. Its compact 16mm OAL makes it well-suited for tight-clearance tooling plates, modular fixturing systems, and precision jig assemblies where a standard hex socket drive is used for adjustment.

Key Features

• Headless design for low-profile, flush or recessed installation in tapped bores
• Rolling ball end allows slight angular misalignment while maintaining clamping contact
• Steel screw and steel ball construction for durability in machine shop environments
• 1,011 lb maximum load capacity suits moderate-duty fixturing tasks
• 16mm overall length fits compact tooling plates and jig assemblies
• 3mm ball diameter provides a defined, consistent contact point on clamped surfaces

Compatibility

Designed as an OEM-style replacement or direct-install component for standard tapped fixture holes accepting headless clamping screws of equivalent thread size and overall length.

Installation Notes

Installation is performed by machinists or toolmakers using a hex key or Allen wrench sized to the screw drive. Ensure the mating tapped hole is clean and free of debris before threading the screw in. Do not exceed the rated maximum load capacity of 1,011 pounds to avoid deformation of the ball end or thread damage. Back the screw out fully before removing or repositioning any clamped workpiece to prevent surface marring.