Gibraltar 9512-G Headless Clamping Screw 5/16-18 3/4 in

Product Description

The GIBRALTAR 9512-G is a headless, plain flat face ball end clamping screw designed for workholding and fixturing applications in machining and tooling setups. It features a 5/16-18 UNC thread with a 0.750 inch overall length and a 0.147 inch diameter stainless steel ball at its tip. The headless design allows flush or below-surface installation, while the flat face ball end provides a smooth, low-friction contact point against workpiece surfaces. A 5/32 inch hex key drives the screw for precise, controlled clamping force. The steel body carries a black oxide finish for corrosion resistance in shop environments. Typically installed by machinists, toolmakers, and fixture builders.

This clamping screw is suited for use in jigs, fixtures, clamps, and toolholding components where a compact, headless fastener is required to apply localized clamping pressure. The plain flat face ball end reduces marring on workpiece contact surfaces. Its UNC thread form is compatible with standard tapped holes in fixture plates, vise jaws, and modular tooling systems. The short 0.750 inch overall length makes it appropriate for low-profile fixture blocks and tight-clearance assemblies common in both manual and CNC machine shop environments.

Key Features

• Headless design allows flush or recessed installation in fixture components
• Plain flat face stainless steel ball end minimizes marring on clamped surfaces
• 5/16-18 UNC thread for compatibility with standard tapped fixture plates
• Black oxide finish provides mild corrosion resistance in shop environments
• 5/32 inch hex key drive for controlled torque application
• Compact 0.750 inch overall length suits low-profile and tight-clearance fixtures

Compatibility

Designed as a standard replacement or stock clamping screw for jigs, fixtures, clamps, and modular tooling components using 5/16-18 UNC tapped holes.

Installation Notes

Installation is performed by machinists or toolmakers using a 5/32 inch hex key. Ensure the receiving threaded hole is clean and free of debris before installation. Do not overtighten, as excess force can damage the ball end or deform softer fixture materials. De-energize or lock out any associated machine before adjusting or replacing clamping screws in active fixtures.