Gibraltar G10-2830BH Lobed Knob 2 in 4 Point Phenolic Black

Product Description

The GIBRALTAR G10-2830BH is a 4-point lobed knob designed for hand-operated adjustment and clamping applications across industrial, mechanical, and equipment assembly settings. Molded from phenolic with a gloss finish, this knob delivers a firm, chemical-resistant grip surface that holds up in demanding shop and field environments. The knob features a 2.0-inch head diameter and a 1/2-20 threaded hole with a 5/8-inch thread depth, allowing direct installation onto compatible threaded studs or bolts without additional hardware. A hub diameter of 7/8 inch and an overall height of approximately 1-5/32 inches keep the profile compact while providing adequate torque leverage for hand tightening.

This lobed knob is suited for use on jigs, fixtures, machine guards, enclosures, and adjustment mechanisms where a tool-free, repeatable hand-tighten connection is required. The 4-lobe geometry distributes finger pressure evenly, reducing operator fatigue during repeated adjustments. Its phenolic construction makes it appropriate for environments with moderate heat, solvents, or oils. Maintenance technicians, equipment assemblers, and industrial service professionals commonly specify this style of knob for panel-mount and fixture applications.

Key Features

• 4-point lobed profile for secure hand grip and even torque distribution
• Phenolic material offers chemical resistance and moderate heat tolerance
• Gloss finish provides a clean, professional appearance on finished assemblies
• 1/2-20 threaded hole with 5/8-inch thread depth for direct stud or bolt mounting
• Compact 7/8-inch hub diameter and 1-5/32-inch overall height for space-constrained installations
• 2.0-inch head diameter delivers adequate leverage for firm hand tightening

Compatibility

Designed as a direct-mount replacement or new-installation lobed knob for any assembly using a 1/2-20 threaded stud or bolt requiring a 4-point phenolic hand knob.

Installation Notes

Installation requires no tools beyond hand pressure in most applications; ensure the mating stud or threaded post is clean and free of debris before threading on the knob. Verify thread engagement depth does not exceed the 5/8-inch hole depth to avoid bottoming out against the knob hub. For equipment service applications, de-energize or lock out the machine before adjusting or replacing hand knobs on any moving or adjustable component.