Gibraltar G10-0033-F Ball Knob Female Insert Phenolic

Product Description

The GIBRALTAR G10-0033-F is a phenolic ball knob with a female insert mount designed for use as a hand-tightened fastening or adjustment control on machinery, fixtures, and industrial equipment. The knob measures 1-3/8 inches in diameter and 1-5/16 inches in height, with a 3/8-16 threaded insert and a 1/2-inch hole depth. The smooth grip surface and black phenolic construction make it well suited for applications requiring a clean appearance and moderate hand torque. Machinists, maintenance technicians, and equipment assemblers install this type of knob on levers, jigs, guards, and adjustable components across light manufacturing and industrial settings.

This ball knob is used in residential and commercial equipment assembly wherever a removable or permanently mounted hand control is needed on a 3/8-16 threaded stud or bolt. Typical applications include machine tool adjustments, panel-mounted controls, fixture clamping, and equipment guards. The female insert style allows the knob to thread directly onto an existing male stud, making it a common replacement or upgrade component in maintenance and assembly work.

Key Features

• Female insert mount accepts a 3/8-16 male stud with 1/2-inch engagement depth
• Phenolic construction offers good chemical resistance and dimensional stability
• 1-3/8 inch diameter provides a comfortable grip for hand-tightening operations
• Smooth grip surface for clean, snag-free operation
• Black finish blends with standard industrial and equipment panel aesthetics
• Hub diameter of 5/8 inch provides a stable seating surface against mating components

Compatibility

Designed as an OEM-style replacement or new-installation ball knob for equipment and machinery using a 3/8-16 threaded stud mount. Confirm thread engagement and stud protrusion before installation.

Installation Notes

Installation requires threading the knob onto a 3/8-16 male stud by hand or with light assistance from a strap wrench if needed. De-energize or lock out any associated equipment before servicing adjustable components. Do not exceed recommended hand-tightening torque for phenolic knobs, as over-torquing can crack the body. Confirm stud length does not bottom out in the insert before the knob seats fully against the mating surface.