Gibraltar G10-0033AD Ball Knob Female Insert Phenolic Red

Product Description

The GIBRALTAR G10-0033AD is a phenolic ball knob with a female insert mount designed for use on threaded shafts and fasteners in light industrial, mechanical, and equipment assembly applications. The knob measures 1-3/8 inches in diameter and 1-9/32 inches in height, with a smooth grip surface and a red finish for easy visual identification. The female insert accepts a 1/2-20 thread with a hole depth of 5/8 inches, making it suitable for secure hand-tightening tasks. This type of knob is commonly installed by equipment technicians, machine builders, and maintenance professionals who need reliable manual control points on jigs, fixtures, and machinery.

This ball knob is suited for use on industrial equipment panels, fixtures, jigs, and machinery where a compact, hand-operated control point is needed. The phenolic construction provides good resistance to common shop chemicals and moderate heat. The female insert style allows the knob to thread directly onto a male-threaded stud or bolt, eliminating the need for additional hardware. It is a practical choice for replacement or new-build applications in manufacturing and maintenance environments.

Key Features

• Female insert mount with 1/2-20 thread for direct installation onto male-threaded studs
• 1-3/8 inch diameter phenolic body with smooth grip surface
• 5/8 inch hole depth provides secure thread engagement
• Red color aids visual identification on panels and fixtures
• 5/8 inch hub diameter for consistent seating and load distribution
• Phenolic material offers resistance to moderate heat and common shop chemicals

Compatibility

Designed as a replacement or new-installation ball knob for equipment, fixtures, and machinery using 1/2-20 male-threaded studs or bolts requiring a female insert style knob.

Installation Notes

Installation requires no special tools — thread the knob directly onto a compatible 1/2-20 male stud by hand. Ensure the stud length does not exceed the 5/8 inch hole depth to avoid bottoming out and prevent improper seating. Power down or de-energize any equipment before replacing control knobs on live panels or machinery. Follow applicable equipment manufacturer guidelines for replacement hardware.