Gibraltar G10-2820-J Lobed Knob Phenolic Black 4 Point

Product Description

The GIBRALTAR G10-2820-J is a 4-point lobed knob constructed from phenolic material with a gloss black finish. Designed for hand-tightening and adjustment applications, this knob threads onto a 1/4-20 stem with a 1-inch thread length. The 1.5-inch head diameter provides sufficient grip surface for tool-free operation. With a hub diameter of 0.625 inches and an overall height of 1 inch, it is a compact, low-profile fastening solution suited for panels, fixtures, enclosures, and light machinery. Licensed tradespeople and maintenance technicians in HVAC, electrical, and mechanical trades regularly specify lobed knobs for access panels and adjustment mechanisms where frequent manual operation is needed.

This knob is appropriate for use in both residential and light commercial settings wherever a 1/4-20 threaded fastening point requires a tool-free, hand-operated control. Typical applications include equipment panels, control enclosures, ductwork access doors, electrical junction boxes, and general industrial fixtures. The phenolic construction resists moderate heat and chemical exposure, making it suitable for environments where metal or softer plastic knobs would be less durable. It is sold individually but subject to a minimum order quantity of 10 units.

Key Features

• 4-lobe design provides secure finger grip for repeated tool-free adjustment
• Phenolic construction offers heat resistance and durability in light industrial environments
• Gloss black finish resists surface wear under regular hand contact
• 1/4-20 thread standard fits widely available hardware and fastener stock
• Compact 1-inch overall height suits low-clearance panel and enclosure installations
• 0.625-inch hub diameter provides stable seating against mounting surfaces

Compatibility

Designed as a standard replacement or new-installation lobed knob for any application utilizing a 1/4-20 threaded stem requiring a 1.5-inch diameter, 4-point hand knob.

Installation Notes

Installation requires no special tools — thread the knob onto a 1/4-20 male stem and tighten by hand to the desired torque. Ensure the mating thread and stem are free of debris before installation. Confirm the equipment or panel is de-energized or otherwise safe for service before replacing or installing knobs on live equipment. Follow applicable NEC or facility-specific lockout/tagout procedures when working inside electrical enclosures.