Gibraltar 5J55B933A8Z001G Lobed Knob 3-point Black

Product Description

The GIBRALTAR 5J55B933A8Z001G is a 3-point lobed knob made from thermoplastic elastomer (TPE), designed for tool-free manual adjustment on machinery, enclosures, panels, and equipment. The knob features a 2.17-inch head diameter and a 5/16-18 threaded stem with a 1.5-inch thread length, making it suitable for secure fastening in a wide range of light to medium-duty applications. The TPE construction provides a firm yet comfortable grip, even with gloved hands. Maintenance technicians, equipment assemblers, and field service pros install this type of knob wherever hand-tightened fastening is needed without a wrench.

This lobed knob is used in industrial equipment panels, HVAC unit covers, electrical enclosures, and general equipment assemblies where repeated manual adjustment or removal is required. Its black finish and molded TPE body are suited to both indoor and light commercial environments. The 5/16-18 thread is a common unified coarse thread size found on a wide range of standard fastening applications across trade and industrial settings.

Key Features

• 3-point lobed profile for positive hand grip during tool-free adjustment
• 2.17-inch head diameter for adequate torque without tools
• 5/16-18 threaded stem with 1.5-inch thread length for secure engagement
• Thermoplastic elastomer (TPE) construction resists vibration loosening and provides grip
• Hub diameter of 0.81 inches and overall height of 1.08 inches for compact fitment
• Black finish suitable for panels, enclosures, and equipment covers

Compatibility

Designed as a standard replacement or new-installation lobed knob for any application using a 5/16-18 threaded stud or insert where a 3-point TPE hand knob is appropriate.

Installation Notes

Installation requires no special tools — thread the knob onto a 5/16-18 male stud or insert by hand. Ensure the mating thread is clean and free of debris before installation. De-energize or shut down any equipment before servicing panels or enclosures where this knob is used. Do not exceed the hand-tightening torque appropriate for TPE knobs, as over-torquing can strip the insert or damage the knob body.