Gibraltar ALH-28M-G Lobed Knob 4 Point Aluminum

Product Description

The GIBRALTAR ALH-28M-G is a 4-point lobed knob machined from 6063-T5 aluminum, designed for use as a manual control or adjustment knob on machinery, enclosures, equipment panels, and industrial assemblies. With a head diameter of approximately 3 inches (76.2 mm) and an overall height of 1.25 inches (31.8 mm), this knob provides a secure, hand-tightened grip without the need for tools. The hub diameter measures 1.26 inches (32 mm) and the hub height is 0.63 inches (15.9 mm). It is well-suited for applications where frequent manual adjustment is required and where lightweight, corrosion-resistant hardware is preferred.

This lobed knob is used across a broad range of commercial and industrial applications including HVAC equipment panels, electrical enclosures, pump assemblies, and mechanical equipment requiring frequent manual operation. The 4-lobe profile allows for confident hand grip and torque transfer without tooling. It is appropriate for both indoor and light-duty outdoor installations where aluminum hardware meets material and corrosion requirements. Machinists, equipment assemblers, maintenance technicians, and field service professionals typically install this type of hardware during equipment assembly or servicing.

Key Features

• 4-point lobed profile for secure hand grip and tool-free adjustment
• Machined from 6063-T5 aluminum for lightweight, corrosion-resistant performance
• Head diameter of 3 inches (76.2 mm) for a comfortable, high-torque grip surface
• Hub diameter of 1.26 inches (32 mm) and hub height of 0.63 inches (15.9 mm) for standard mounting fitment
• Compact overall height of 1.25 inches (31.8 mm) for use in space-constrained panel applications

Compatibility

Designed as an OEM-style replacement or new-install lobed knob for machinery panels, enclosures, and equipment assemblies requiring a 4-point aluminum hand knob with a 76.2 mm head diameter.

Installation Notes

Installation is typically performed by maintenance technicians or equipment assemblers using standard hand tools. Ensure the mating shaft or threaded insert is clean and free of debris before seating the knob. Verify hub bore and thread specifications are compatible with the receiving shaft before installation. Do not over-torque during installation, as aluminum hardware can be damaged by excessive force.