Gibraltar C4-20B-G Solid Crank Handle Steel 5/16 Bore

Product Description

The GIBRALTAR C4-20B-G is a solid crank handle designed for manual actuation of machinery, valves, equipment panels, and industrial assemblies. Constructed from steel, it provides durable grip and torque transmission in demanding trade and industrial applications. The handle features a 5/16 inch reamed bore for precise shaft fitment, a 1 inch knob diameter for operator control, and a center-to-center distance of 2.5 inches. Overall height is 2-9/16 inches. This type of handle is typically installed by maintenance technicians and equipment assemblers working on light industrial or commercial mechanical systems.

The C4-20B-G is suited for use on control panels, valve stems, machine tools, and similar equipment requiring a compact, rigid crank handle. The reamed bore ensures a close-tolerance fit to the mating shaft. The 0.5625 inch hub diameter and 0.5625 inch hub height allow for secure mounting in space-constrained assemblies. The steel construction makes it appropriate for shop environments and general-purpose industrial use where durability and consistent operation are required.

Key Features

• Solid steel construction for durability in industrial and trade environments
• 5/16 inch reamed bore for close-tolerance shaft fitment
• 2.5 inch center-to-center distance for ergonomic crank operation
• 1 inch knob diameter for positive hand grip
• 9/16 inch hub diameter and 9/16 inch hub height for compact mounting
• 2-9/16 inch overall height suits space-limited panel and equipment installations

Compatibility

Designed as a general-purpose replacement or service crank handle for machinery, control panels, and valve assemblies requiring a reamed-bore steel handle with a 5/16 inch bore and 2.5 inch center-to-center span.

Installation Notes

Installation is typically performed by maintenance technicians or equipment assemblers. Ensure the mating shaft is de-energized and the equipment is locked out and tagged out before fitting the handle. Verify shaft diameter matches the 5/16 inch reamed bore before installation to avoid damage to the bore or shaft. Secure with appropriate set screws or fasteners per the equipment manufacturer's specifications.