Gibraltar 9837SS-G Rolling Ball Clamping Screw 1/2-13

Product Description

The GIBRALTAR 9837SS-G is a headed rolling ball end clamping screw designed for precision fixturing and workholding applications. It features a 1/2-13 UNC thread and measures 2 inches overall length (OAL). The rolling ball end allows for secure, adjustable clamping contact against workpieces without marring surfaces. Both the screw body and ball are manufactured from 18-8 stainless steel, providing corrosion resistance suitable for coolant-exposed or washdown environments. The 3/8-inch hex key drive allows controlled installation torque. This type of fastener is typically installed by machinists, toolmakers, and fixture builders in manufacturing and machine shop settings.

Rolling ball end clamping screws are commonly used in modular fixturing systems, jig plates, vises, and custom workholding setups on CNC and manual machine tools. The rolling ball tip maintains even clamping force even when the screw contacts a surface at a slight angle, reducing the risk of part movement or damage. This screw is suited for light to moderate clamping loads in both production and prototype fixture environments where stainless steel material compatibility is required.

Key Features

• Rolling ball end distributes clamping force evenly and accommodates minor angular misalignment
• 18-8 stainless steel construction resists corrosion in coolant and washdown environments
• 1/2-13 UNC thread for broad compatibility with standard fixturing components
• 3/8-inch hex key drive for precise torque application
• 0.334-inch ball diameter provides consistent contact area across clamping surfaces
• 2-inch OAL suits a wide range of fixture plate depths and clamping reach requirements

Compatibility

Designed as an OEM-style replacement or direct-use component for standard 1/2-13 UNC threaded fixturing plates, jig bodies, and modular workholding systems requiring a headed rolling ball end clamping screw.

Installation Notes

Installation is performed by machinists or toolmakers using a 3/8-inch hex key. Thread the screw into a pre-tapped 1/2-13 UNC hole in the fixture body and advance until the ball end contacts the workpiece. Do not over-torque, as excessive force can damage the rolling ball mechanism or the clamped part surface. Ensure the mating threaded hole is clean and free of chips or debris before installation.