Gibraltar G10-2820AT Lobed Knob 4-point Phenolic Black

Product Description

The GIBRALTAR G10-2820AT is a 4-point lobed knob designed for tool-free manual adjustment on machinery, fixtures, jigs, and industrial equipment. Molded from phenolic with a gloss black finish, it provides a firm grip and resists common shop fluids. The knob features a 1/4-20 threaded hole with a 3/8-inch thread depth, a 1.5-inch head diameter, and an overall height of 1 inch. The hub diameter measures 5/8 inch. This style of knob is commonly installed by machine builders, maintenance technicians, and fabricators who need reliable hand-tightened clamping or positioning control.

The G10-2820AT suits a wide range of light to medium-duty clamping, locking, and adjustment applications. It is appropriate for use on drill press fences, welding fixtures, machining jigs, panel assemblies, and general industrial hardware where a threaded female knob is needed. The 4-lobe profile gives adequate torque for hand-tightening without tools, making it practical for frequently adjusted assemblies in production or shop environments.

Key Features

• 4-point lobed profile for secure hand grip during tool-free adjustment
• Phenolic construction with gloss finish resists oils and common shop fluids
• 1/4-20 threaded insert with 3/8-inch thread depth for standard fastener engagement
• 1.5-inch head diameter and 1-inch overall height for compact fitment
• 5/8-inch hub diameter provides stable seating on mating surfaces

Compatibility

Designed as a standard female-threaded lobed knob for use with 1/4-20 threaded studs, screws, or bolts on industrial machinery, fixtures, and equipment assemblies.

Installation Notes

Installation requires no special tools — thread the knob onto a compatible 1/4-20 male stud or fastener by hand. Verify that the mating thread length does not exceed the 3/8-inch hole depth to avoid bottoming out before the knob seats. Disengage any clamping load and relieve tension on the assembly before removing or replacing the knob. Follow applicable machine guarding and lockout/tagout procedures when servicing equipment.