Gibraltar GLH-503-G Gear Lever Arm with Ball Knob

Product Description

The GIBRALTAR GLH-503-G is a Type A gear lever arm fitted with a ball knob, designed for manual positioning and adjustment applications in industrial and mechanical assemblies. The arm features a stainless steel shaft measuring 0.3125 inches in diameter and 3.94 inches in length, paired with a phenolic ball knob 0.98 inches in diameter and 0.89 inches in length. The threaded stem is sized 5/16-18 with a thread length of 0.43 inches, providing a secure and repeatable connection point. Overall handle length is 4.8 inches. Weighing 0.08 pounds, this lever arm is suited for light-duty manual control tasks where corrosion resistance and grip comfort are required.

This gear lever arm is used in machinery, jigs, fixtures, and industrial equipment where an operator needs to manually engage, disengage, or adjust a mechanism by hand. The combination of a stainless steel shaft and phenolic knob makes it appropriate for environments where moderate chemical or moisture exposure is a concern. It is commonly installed by millwrights, machine maintenance technicians, and mechanical assemblers working on production equipment, conveyors, and custom fabrication setups.

Key Features

• Type A gear lever arm configuration for manual adjustment applications
• Stainless steel shaft provides corrosion resistance in demanding environments
• Phenolic ball knob offers a firm, comfortable grip surface
• 5/16-18 threaded stem with 0.43 inch thread length for secure mechanical connection
• Compact 4.8 inch handle length suitable for confined machine access points
• Lightweight at 0.08 pounds for easy single-hand operation

Compatibility

Designed as an OEM-style replacement or direct-fit lever arm for mechanical assemblies accepting a 5/16-18 threaded stem with a 0.3125 inch shaft diameter.

Installation Notes

Installation is performed by mechanical technicians or maintenance personnel. Power down and de-energize any associated machinery before installing or replacing lever arm components. Thread engagement should be confirmed as secure without over-torquing into the mating component. Follow applicable machine safety standards and lockout/tagout procedures during service.