Gibraltar ALHA-1-G Lobed Knob 4 Point Aluminum

Product Description

The GIBRALTAR ALHA-1-G is a 4-point lobed knob machined from 6063-T5 aluminum, designed for hand-tightened fastening applications in industrial, mechanical, and HVAC enclosure assemblies. The knob features a 1.5-inch head diameter with four evenly spaced lobes that provide positive grip without tools. It threads onto a 1/4-20 stem with a 1.75-inch thread length, making it suitable for panel mounting, access doors, and equipment covers where repeated removal and reinstallation is required. At 0.07 pounds, it is lightweight and will not add meaningful load to sheet metal or panel assemblies.

This lobed knob is commonly used in light industrial equipment, HVAC unit access panels, electrical enclosures, and control cabinet covers. The aluminum construction resists corrosion in moderate environments and is appropriate for both indoor and outdoor-rated enclosure applications where a non-marring, tool-free fastening point is needed. Technicians installing or servicing equipment covers, filter access panels, or junction box lids will find this knob suitable for those recurring service points.

Key Features

• 4-point lobed profile for secure hand-tightening without tools
• 1.5-inch head diameter provides adequate grip surface for gloved hands
• 6063-T5 aluminum construction — lightweight and corrosion resistant
• 1/4-20 thread size — widely compatible with standard panel fastener hardware
• 1.75-inch thread length accommodates typical panel and bracket thicknesses
• Weighs 0.07 pounds — negligible added load on sheet metal panels

Compatibility

Designed as a standard 1/4-20 threaded lobed knob for use with any panel, enclosure, or equipment cover that accepts a 1/4-20 fastener thread.

Installation Notes

Installation requires no special tools — thread the knob onto an existing 1/4-20 stud or insert by hand. Ensure the mating stud or threaded insert is clean and free of debris before installation. Do not use power tools to drive this knob, as aluminum threads can strip under excessive torque. Power down or de-energize any equipment before accessing panels or enclosures secured by this knob.