Gibraltar 5B50B924A8Z002G Lobed Knob 5-point 1/4-20

Product Description

The GIBRALTAR 5B50B924A8Z002G is a 5-point lobed knob molded from thermoplastic elastomer (TPE), designed for hand-tightening and manual adjustment applications in HVAC, electrical, and light mechanical assemblies. With a 1.91-inch head diameter and a 1/4-20 threaded stem measuring 1.25 inches in length, this knob installs directly onto standard 1/4-20 threaded posts or studs without tools. The TPE construction provides a firm, non-slip grip and resists oils, greases, and common shop chemicals. Finished in black, it is well suited for panel-mount, enclosure, and equipment cover fastening tasks where frequent manual access is required.

This lobed knob is commonly used in residential and commercial HVAC equipment panels, electrical enclosures, control boxes, and general industrial assemblies that require tool-free access. The 5-lobe profile distributes hand torque evenly, reducing user fatigue during repeated adjustments. It is suitable for any application threaded at 1/4-20 where a compact, low-profile knob is needed and finger access is not obstructed.

Key Features

• 5-lobe profile for even hand torque distribution and comfortable grip
• Thermoplastic elastomer construction resists oils, greases, and common chemicals
• 1/4-20 threaded stem for direct installation on standard posts and studs
• 1.25-inch thread length accommodates a range of panel and enclosure thicknesses
• 0.93-inch hub diameter and 1.09-inch overall height for a low-profile footprint
• Tool-free installation and removal for panels requiring frequent access

Compatibility

Designed as a hand-tightening replacement or service knob for any assembly using a standard 1/4-20 threaded stud or post where a lobed TPE knob is specified.

Installation Notes

Installation requires no tools — thread the knob onto a clean, undamaged 1/4-20 stud by hand until snug. Ensure the mating thread is free of debris or damage before installation. This knob is intended for hand-tight applications only and should not be driven with power tools or wrenches. When used on live electrical panels or energized enclosures, de-energize the equipment before accessing internal components per NFPA 70 (NEC) requirements.