Gibraltar 5B40B924A8Z001G Lobed Knob 5-point 1/4-20

Product Description

The GIBRALTAR 5B40B924A8Z001G is a 5-point lobed knob made from thermoplastic elastomer (TPE), designed for finger-operated manual adjustment in light industrial, HVAC, electrical, and equipment-panel applications. The knob measures 1.52 inches in head diameter and 1.09 inches in overall height, with a 1/4-20 threaded stem and a thread length of 1.25 inches. The TPE construction provides a firm, grippy feel without the brittleness of hard nylon or the cost of overmolded rubber. The black finish is standard for panel hardware in trade equipment enclosures.

This lobed knob is suited for residential and light commercial applications where a tool-free, hand-tightened fastener is needed. Common install scenarios include equipment access panels, fan speed selector assemblies, control enclosure covers, and any adjustable component requiring quick-release or frequent manual repositioning. The 1/4-20 thread is one of the most common machine-screw sizes in trade equipment, making this knob a straightforward drop-in for panels, brackets, and mounting rails that use standard 1/4-20 hardware.

Key Features

• 5-point lobed profile for secure finger grip without tools
• Thermoplastic elastomer construction for durability and tactile grip
• 1/4-20 threaded stem — standard machine-screw thread for broad fitment
• 1.25 inch thread length accommodates typical panel thickness with clamping depth to spare
• Compact 1.09 inch overall height for low-clearance panel installations
• Lightweight at 0.07 pounds — minimal load on panels or enclosures

Compatibility

Designed as a standard 1/4-20 threaded lobed knob suitable for use on equipment panels, enclosure covers, and adjustable brackets that accept 1/4-20 machine-screw hardware.

Installation Notes

Installation does not require special tools — hand-tighten the knob onto any 1/4-20 threaded stud or standoff. Before replacing a knob on live electrical equipment or pressurized assemblies, de-energize the circuit or relieve pressure per standard lockout/tagout procedures. Do not over-torque by wrapping the knob with tools, as TPE hubs can crack under excessive load. Verify thread engagement covers the full 1.25 inch thread length for a secure hold.