Gibraltar G10-2830BL Lobed Knob 4-point Phenolic Black

Product Description

The GIBRALTAR G10-2830BL is a 4-point lobed knob manufactured from phenolic with a gloss black finish. It provides a firm, tool-free grip for manual adjustment, clamping, and locking applications on threaded studs or bolts. The knob features a 2-inch head diameter and a 1/2-13 threaded hole with a 5/8-inch thread engagement depth, making it well-suited for use in industrial equipment, fixtures, jigs, and trade-service panels where frequent hand-adjustment is required. Phenolic construction offers good chemical resistance and dimensional stability in moderate-temperature environments. This part ships as a single knob with a minimum order quantity of 10 units.

The G10-2830BL is used in light industrial, manufacturing, and equipment-service applications where a hand-tightenable fastener is needed on a 1/2-13 threaded shaft or boss. Typical install scenarios include machine guards, access panel latching, jig and fixture clamping, and control-enclosure hardware. The 4-lobe profile distributes hand torque evenly across the grip surface, reducing fatigue during repeated adjustments. It is commonly installed by millwrights, equipment technicians, and electricians working on control panels or enclosures.

Key Features

• 4-point lobed profile for improved hand grip and torque distribution
• 2-inch head diameter with 7/8-inch hub diameter
• 1/2-13 threaded hole with 5/8-inch thread engagement depth
• Phenolic construction with gloss black finish for chemical and wear resistance
• Overall height of 1-1/8 inches for low-profile installations

Compatibility

Designed as a direct-fit hand knob for any application using a 1/2-13 threaded stud, bolt, or boss requiring a 4-lobe phenolic knob with a 2-inch head diameter.

Installation Notes

Thread the G10-2830BL onto a 1/2-13 stud or bolt by hand, ensuring the thread engagement does not exceed the 5/8-inch hole depth to avoid bottoming out. De-energize or lock out equipment before replacing hardware on electrical enclosures or powered machinery per applicable OSHA lockout/tagout procedures. No special tools are required for installation; verify the mating thread is clean and free of burrs before seating the knob.