Gibraltar 821113-G Cap Screw Hook Clamp Assembly

Product Description

The GIBRALTAR 821113-G is a cap screw hook clamp assembly designed for workholding and fixturing applications in machine shop and industrial environments. The assembly features a 3/8-16 threaded cap screw and a body diameter of 0.874 inches with a body length of 2.25 inches. The clamp face measures 19/32 inches in height and 9/16 inches in width, providing a compact clamping footprint suitable for confined setups. Constructed from carbon alloy steel with a black oxide coating, the 821113-G offers corrosion resistance and durability under repeated clamping cycles. The screw is included with the assembly. This component is installed by machinists, toolmakers, and fixture builders working with milling machines, surface grinders, and similar setups.

This cap screw hook clamp assembly is suited for use in light-duty to medium-duty workholding setups on machine tool tables, modular fixture plates, and T-slot surfaces. It is commonly used in job shops and manufacturing environments where repeatable part location and secure clamping are required. The center hole to clamp edge measurement of 1 inch allows for consistent positioning relative to the workpiece edge. The compact body size makes it practical for setups where clearance is limited.

Key Features

• 3/8-16 threaded cap screw included with assembly
• Body diameter of 0.874 inches and body length of 2.25 inches for compact fitment
• Clamp face height of 19/32 inches and width of 9/16 inches
• Center hole to clamp edge distance of 1 inch for precise positioning
• Carbon alloy steel construction with black oxide coating for corrosion resistance

Compatibility

Designed as an OEM-style workholding component compatible with standard 3/8-16 threaded T-slot clamp setups on machine tool tables and modular fixture systems.

Installation Notes

Installation is performed by machinists or fixture builders using standard hand tools. Ensure the machine table or fixture surface is clean and free of debris before seating the clamp. Power down and lock out any associated machine before positioning or adjusting clamp assemblies on the work surface. Do not exceed the recommended clamping load for the thread size and material specified.