Gibraltar 5A03B943A8Z002G Lobed Knob 4-point 3/8-16

Product Description

The GIBRALTAR 5A03B943A8Z002G is a 4-point lobed knob constructed from thermoplastic elastomer (TPE) in a black finish. It features a 1.99-inch head diameter and a 3/8-16 threaded stem with 1.5 inches of thread length, providing a secure, tool-free grip for manual adjustment applications. The TPE construction delivers a firm yet comfortable hand feel, making it well suited for equipment panels, enclosures, and machinery where frequent manual adjustments are required. Licensed technicians and maintenance professionals in HVAC, electrical, and general equipment service commonly specify this type of knob as an OEM-style or field replacement fastener.

This lobed knob is appropriate for use on control panels, equipment housings, access covers, and similar assemblies that require a removable or adjustable fastener without tools. The 3/8-16 thread is a standard inch-series size found on a wide range of commercial and industrial equipment. With an overall height of 0.86 inches and a hub diameter of 0.91 inches, it fits into compact panel layouts where space is limited. Suitable for both original equipment installation and maintenance replacement scenarios in light industrial and trade service environments.

Key Features

• 4-point lobed profile allows secure hand-tightening without tools
• Thermoplastic elastomer construction provides durability and a firm grip surface
• 3/8-16 threaded stem is a widely used standard inch-series thread size
• 1.5 inches of thread length accommodates typical panel and housing thicknesses
• Compact 0.86-inch overall height suits space-constrained enclosure installations
• Black finish blends with standard equipment panel aesthetics

Compatibility

Designed as an OEM-style replacement or new-installation lobed knob for equipment panels and enclosures using 3/8-16 inch-series threaded fastener points.

Installation Notes

Installation does not require special tools — thread the knob onto the mating stud or insert by hand and tighten to a snug, firm-contact fit. Ensure the receiving thread is clean and free of debris before installation. De-energize or lock out any associated equipment before servicing panels or enclosures where this knob is being replaced. Do not overtighten, as TPE hubs can crack under excessive torque from pliers or wrenches.