Gibraltar ALH-22M-G Lobed Knob 4-point Aluminum

Product Description

The GIBRALTAR ALH-22M-G is a 4-point lobed knob machined from 6063-T5 aluminum, designed for hand-tightening and adjustment applications on machinery, fixtures, and equipment panels. With a head diameter of 50.8 mm and an overall height of 25.40 mm, the knob provides a firm grip surface without requiring tools. The 6063-T5 aluminum alloy offers a balance of corrosion resistance and structural rigidity, making it suitable for both indoor industrial environments and light-duty field applications. Technicians and equipment assemblers use lobed knobs where frequent manual adjustment is needed and tool access is limited or undesirable.

This knob fits applications in industrial equipment, panel assemblies, jigs, fixtures, and machine guards where a secure, repeatable hand-operated fastening point is required. The 4-lobe profile distributes finger force evenly, reducing fatigue during repeated adjustments. With a hub diameter of 21.00 mm and a hub height of 12.70 mm, it is suited for standard threaded shaft or insert configurations common in light mechanical and electrical enclosure assemblies.

Key Features

• 4-point lobed profile for ergonomic hand tightening without tools
• 50.8 mm head diameter provides ample grip surface
• 6063-T5 aluminum construction for corrosion resistance and durability
• 21.00 mm hub diameter and 12.70 mm hub height for standard shaft fitment
• Lightweight at 0.08 pounds, suitable for weight-sensitive assemblies
• Overall height of 25.40 mm for low-profile panel installations

Compatibility

Designed as an OEM-style replacement or direct-install lobed knob for machinery, equipment panels, and fixture assemblies requiring a 4-point aluminum hand knob with a 21.00 mm hub diameter.

Installation Notes

Installation is performed by hand or with standard assembly tools depending on the threaded insert or shaft configuration of the host equipment. Ensure the mating thread or shaft is clean and free of burrs before seating the knob. Do not exceed the hand-tight torque appropriate for the aluminum hub, as over-torquing can damage the internal thread or insert. Refer to equipment manufacturer specifications for proper fastening requirements.