Gibraltar 9534-G Rolling Ball Clamping Screw 3/8-16

Product Description

The GIBRALTAR 9534-G is a headless rolling ball end clamping screw designed for secure, low-profile workholding and fixturing applications. Threaded 3/8-16 UNC, it features a 0.275-inch stainless steel rolling ball tip that allows smooth, self-centering contact against a workpiece without marring the surface. The screw body is steel with a black oxide finish for corrosion resistance. At 0.75 inches overall length, this compact fastener is suited for tight-clearance setups where a headed screw would interfere. Machinists, toolmakers, and fixture builders use this style of clamping screw in jigs, vises, and precision workholding assemblies.

This clamping screw is used in machine shop environments for fixture plates, jig bodies, and modular workholding systems. Its rolling ball tip reduces friction and point loading on the clamped surface, making it appropriate for holding finished or semi-finished parts during secondary operations. The headless profile allows installation flush with or below a tapped surface, keeping the fixture compact and snag-free. Suitable for both production and one-off toolroom applications.

Key Features

• Headless design for flush or sub-flush installation in tapped bores
• Rolling stainless steel ball tip provides self-centering, low-friction contact
• 3/8-16 UNC thread for wide compatibility with standard fixture hardware
• Black oxide finish on steel body for added corrosion resistance
• Compact 0.75-inch overall length for tight-clearance workholding setups

Compatibility

Designed as a standard replacement or addition for 3/8-16 UNC tapped workholding fixtures, jig plates, and modular fixturing systems requiring a headless rolling ball end clamping screw.

Installation Notes

Install using a hex key or Allen wrench sized for the headless drive recess; confirm the thread engagement depth is sufficient before applying clamping load. Ensure the mating tapped hole is clean and free of chips before threading in the screw. Do not overtighten, as the rolling ball tip is designed for controlled clamping pressure, not torque-intensive fastening. Deburr tapped holes prior to installation to protect the ball and thread surfaces.