Gibraltar G10-2980-E Lobed Knob 5-point Thermoplastic

Product Description

The GIBRALTAR G10-2980-E is a 5-point lobed knob made from thermoplastic elastomer (TPE), designed for hand-operated adjustment and fastening applications. The lobed profile distributes grip force across five evenly spaced points, allowing secure tightening and loosening without tools. With a 2-1/4-inch head diameter and a 5/16-18 threaded stem with 3/4 inch of thread engagement, this knob is well-suited for machinery panels, jigs, fixtures, and equipment enclosures where frequent manual adjustment is needed. TPE construction provides a firm yet slightly compliant grip surface that holds up to repeated handling in shop and field environments.

This lobed knob is commonly installed on industrial equipment, fabrication fixtures, machine guards, and control panels where finger-operable fasteners are preferred over hex hardware. It is appropriate for light to medium-duty clamping and positioning tasks in manufacturing, maintenance, and trade applications. The 5/16-18 stem size fits standard threaded inserts and threaded holes found on a wide range of commercial and industrial equipment. Machinists, millwrights, and maintenance technicians are the typical installers.

Key Features

• 5-point lobed profile for secure, tool-free hand tightening
• Thermoplastic elastomer construction for durable, comfortable grip
• 2-1/4 inch head diameter for adequate torque leverage by hand
• 5/16-18 threaded stem with 3/4 inch thread length for standard fitment
• Hub diameter of 27/32 inch and overall height of 25/32 inch for compact installation footprint

Compatibility

Designed as a standard replacement or upgrade lobed knob for equipment, fixtures, and panels using 5/16-18 threaded fastener positions.

Installation Notes

Installation requires no special tools — thread the knob stem into a compatible 5/16-18 threaded hole or insert by hand. Ensure the mating thread is clean and free of debris before installation. Do not exceed hand-tight torque, as TPE knobs are not intended for wrench-driven installation. Confirm thread engagement depth is appropriate for the application load before returning equipment to service.