Gibraltar SBK-047-G Ball Knob Threaded Hole Steel

Product Description

The GIBRALTAR SBK-047-G is a steel ball knob with a threaded hole mount, designed for use as a hand-operated control knob on machinery, fixtures, and equipment panels. Measuring 1.38 inches in diameter with a 5/8-inch hole depth and a 1/2-13 thread size, this knob provides a compact, smooth-grip solution for applications requiring manual adjustment or positioning. The natural steel finish suits industrial and commercial environments. It is typically installed by maintenance technicians, machinists, and electricians working on control panels, enclosures, and mechanical assemblies.

This ball knob is suited for light-to-medium duty manual control applications in industrial, commercial, and trade environments. Common uses include equipment control panels, electrical enclosures, machine tool handles, and HVAC access panels where a secure, easy-grip knob is needed for manual operation. Its threaded hole design allows direct threading onto standard 1/2-13 fastener shafts without additional hardware.

Key Features

• Threaded hole mount accepts standard 1/2-13 thread shafts
• 1.38-inch diameter for a compact, accessible hand grip
• 5/8-inch hole depth provides secure thread engagement
• Smooth grip surface for clean, consistent hand operation
• Natural steel construction for durability in industrial settings

Compatibility

Designed as a direct-thread replacement or new-installation ball knob for equipment and fixtures using 1/2-13 threaded shafts in industrial and commercial applications.

Installation Notes

Installation requires threading the knob onto a compatible 1/2-13 shaft by hand or with light tool assistance. Ensure the mating shaft threads are clean and free of debris before installation. De-energize or lock out any associated equipment before servicing control panels or enclosures per applicable OSHA lockout/tagout procedures. Do not overtighten, as steel-on-steel thread engagement can result in galling if excessive force is applied.