Gibraltar G10-2830-A Lobed Knob 2 in 4-point Phenolic 5/16-18

Product Description

The GIBRALTAR G10-2830-A is a 4-point lobed knob molded from phenolic resin with a gloss black finish. It is designed for hand-tightening and manual adjustment applications on machinery, enclosures, jigs, and industrial fixtures. The knob features a 2-inch head diameter with a 5/16-18 threaded hole and a 0.5-inch thread depth, providing a secure grip on standard fastener stems. With an overall height of 1 inch and a hub diameter of 0.875 inches, this knob offers a compact profile suited for confined mounting locations. Phenolic construction delivers chemical resistance and dimensional stability under repeated use.

This lobed knob is commonly used in light industrial, manufacturing, and fabrication environments where operators need frequent manual adjustments without tools. Typical applications include panel latching, fixture clamping, machine guarding, and equipment access covers. The 4-point lobe geometry gives operators consistent grip in confined spaces or when wearing gloves. It is suitable for both original equipment installations and maintenance replacements on industrial machinery.

Key Features

• 4-point lobe design for firm tool-free grip and ergonomic hand tightening
• Phenolic resin construction resists oils, solvents, and moderate heat
• Gloss black finish provides a clean appearance and surface durability
• 5/16-18 threaded hole with 0.5-inch thread depth fits standard stems
• Compact 1-inch overall height suits tight mounting clearances
• Hub diameter of 0.875 inches distributes clamping load evenly

Compatibility

Designed as a standard replacement or OEM-style lobed knob for industrial equipment, fixtures, and enclosures using a 5/16-18 threaded stem.

Installation Notes

Installation requires no special tools — thread the knob onto a 5/16-18 stud or bolt by hand to the desired torque. Ensure the mating stem thread is clean and free of debris before threading. Do not use a wrench or impact tool on phenolic knobs, as excessive force can crack the hub. Verify thread engagement depth does not exceed 0.5 inches to avoid bottoming out inside the knob.