Gibraltar 5B40B923A8Z002G Lobed Knob 5-point 1/4-20

Product Description

The GIBRALTAR 5B40B923A8Z002G is a 5-point lobed knob molded from thermoplastic elastomer (TPE), designed for hand-tightening applications where tools are not practical or necessary. The lobed profile distributes grip force across five evenly spaced points, allowing consistent torque application by hand. With a 1.52-inch head diameter and a 1/4-20 threaded stem with 1 inch of thread engagement, this knob suits light-duty clamping, adjustment, and panel-mounting tasks across industrial, HVAC, electrical enclosure, and general equipment applications. TPE construction provides a firm yet compliant feel and resists common shop fluids.

This lobed knob is suited for use on control panels, equipment covers, access doors, and adjustable fixtures where frequent hand adjustment is required. It is commonly installed by HVAC technicians, electricians, and equipment maintenance personnel on enclosures, junction boxes, ductwork access panels, and similar assemblies requiring tool-free fastening. The black finish blends with standard panel hardware.

Key Features

• 5-point lobed profile for secure hand grip without tools
• Thermoplastic elastomer construction for durability and fluid resistance
• 1/4-20 threaded stem fits standard fastener hardware
• 1 inch thread length for reliable engagement depth
• 1.52-inch head diameter provides broad grip surface
• Black color for clean appearance on dark panels and enclosures

Compatibility

Designed as a standard replacement or upgrade lobed knob for any assembly using a 1/4-20 threaded fastener requiring hand-tightening access.

Installation Notes

Installation requires no special tools — thread the knob onto the mating 1/4-20 stud or screw by hand. Ensure the mating thread is clean and free of debris before installation. Always de-energize and lock out electrical equipment before servicing panels or enclosures where this knob is used as an access fastener. Do not use impact or power tools to drive this knob, as the TPE body is not rated for tool-driven torque.