Gibraltar GLH-581-G Gear Lever Arm M8x1.25 Stem

Product Description

The GIBRALTAR GLH-581-G is a Type E gear lever arm with a cylindrical phenolic knob, designed for use in machinery adjustment, positioning, and clamping applications requiring a reliable manual control point. The arm features a stainless steel shaft measuring 0.39 inches in diameter and 3.15 inches in length, threaded with an M8x1.25 stem over a 0.43-inch thread length. The phenolic knob measures 0.83 inches in diameter and 2.36 inches in length, providing a firm, ergonomic grip. Total handle length is 4.92 inches. This type of lever arm is installed by machine builders, maintenance technicians, and industrial equipment service professionals.

The GLH-581-G is suited for use on industrial machinery, jigs, fixtures, and mechanical assemblies where manual lever control is required. The M8x1.25 metric thread pattern fits standard M8-threaded bosses and tapped holes commonly found on light to medium-duty equipment. The stainless steel shaft provides corrosion resistance in washdown or humid environments, while the phenolic knob withstands moderate heat and chemical exposure typical of shop and factory floor conditions.

Key Features

• Type E gear lever arm configuration with cylindrical knob profile
• Stainless steel shaft for corrosion resistance in demanding environments
• Phenolic knob material offers heat and chemical resistance
• M8x1.25 metric stem thread for standard metric tapped-hole fitment
• 4.92-inch total handle length for accessible manual operation
• Compact 0.83-inch knob diameter for use in space-constrained assemblies

Compatibility

Designed as a direct-fit replacement or upgrade lever arm for industrial machinery, fixtures, and equipment with M8x1.25 threaded mounting points requiring a Type E cylindrical-knob lever arm.

Installation Notes

Installation is performed by maintenance technicians or machine builders familiar with metric fastener standards. De-energize and lock out any machinery before removing or installing control hardware. Thread the M8x1.25 stem into the tapped receiver by hand first to avoid cross-threading, then torque to the equipment manufacturer's specification. Confirm the lever arm orientation and swing clearance before returning the machine to service.