Gibraltar 9535-G Rolling Ball Clamping Screw 3/8-16

Product Description

The GIBRALTAR 9535-G is a headless rolling ball end clamping screw designed to apply controlled point-contact clamping force in workholding, fixturing, and tooling applications. It features a 3/8-16 UNC thread and a stainless steel rolling ball tip measuring 0.275 inches in diameter. The headless body is finished in black oxide for corrosion resistance in shop environments. Overall length is 1 inch. The rolling ball tip allows the screw to make contact with a workpiece at varying angles without marring the surface, making it well suited for precision clamping setups where surface finish matters.

This clamping screw is used in machine shop and industrial environments where jigs, fixtures, and vises require a reliable, low-profile fastening element. Its headless profile allows flush or recessed installation in fixture bodies. The 3/8-16 UNC thread is a standard coarse-thread size that mates with common tapped holes in steel and cast-iron fixture plates. Machinists, toolmakers, and fixture builders are the typical end users for this type of hardware.

Key Features

• Headless body provides flush or recessed installation in fixture and jig assemblies
• Rolling stainless steel ball tip applies clamping force at multiple contact angles without marring workpieces
• 3/8-16 UNC coarse thread for compatibility with standard tapped fixture plates
• Black oxide finish adds corrosion resistance in shop environments
• Compact 1-inch overall length suits space-constrained fixture designs
• Steel screw body with stainless steel ball for a combination of strength and corrosion resistance at the contact point

Compatibility

Designed as a standard 3/8-16 UNC headless clamping screw for use in workholding fixtures, jigs, vises, and tooling plates where a rolling ball tip and headless profile are specified.

Installation Notes

Installation requires a tapped 3/8-16 UNC hole in the fixture body. Use an appropriate hex key or spanner wrench sized for the headless drive recess to thread and torque the screw into position. Ensure the mating tapped hole is clean and free of chips before installation. Do not overtighten, as the rolling ball tip is designed for controlled contact force, not heavy clamping loads requiring a full-face fastener.