Gibraltar 5A02B921A8Z003G Lobed Knob 4-point Tpe Black

Product Description

The GIBRALTAR 5A02B921A8Z003G is a 4-point lobed knob constructed from thermoplastic elastomer (TPE) and finished in black. It features a 1.75-inch head diameter and a 1/4-20 threaded stem with a 0.5-inch thread length, making it a compact, hand-operable fastening component used across HVAC equipment panels, electrical enclosures, control cabinets, and general industrial assemblies. The TPE construction provides a firm, comfortable grip without requiring tools for installation or removal. Technicians and assemblers in HVAC, electrical, and mechanical trades use this style of knob wherever frequent manual access to a panel or component is required.

This lobed knob is suited for light-duty fastening applications in both residential and commercial settings. Typical installations include equipment access panels, control board covers, junction box lids, and service doors on HVAC units, electrical enclosures, and mechanical equipment. The 4-point lobe design improves grip torque over standard round knobs, making it practical in environments where gloves may be worn or access is limited. Its compact overall height of 0.75 inches keeps the profile low on shallow panel surfaces.

Key Features

• 4-point lobed profile for improved manual grip torque
• Thermoplastic elastomer (TPE) construction for durability and comfortable hand feel
• 1/4-20 threaded stem for standard compatibility with common fastener patterns
• 0.5-inch thread length suitable for thin panel and bracket installations
• Compact 0.75-inch overall height for low-profile mounting surfaces
• Black finish for clean appearance on equipment panels and enclosures

Compatibility

Designed as a standard 1/4-20 threaded lobed knob for use in HVAC, electrical, and general mechanical assemblies requiring manual panel fastening.

Installation Notes

Installation is typically performed by hand without tools, threading the knob onto a 1/4-20 stud or insert until snug. Ensure the mating thread depth does not exceed the 0.5-inch thread length to avoid bottoming out. Power down or de-energize any equipment before removing or installing panel fasteners on electrical or HVAC enclosures. Do not over-torque by hand, as TPE knobs are designed for tool-free service access.