Gibraltar KN4C-B5-21-G Ball Knob Female Insert 1-5/8 in

Product Description

The GIBRALTAR KN4C-B5-21-G is a thermoplastic ball knob with a female insert configuration, designed for manual adjustment and control applications in industrial, mechanical, and machine tool settings. The knob measures 1-5/8 inches in diameter and 1-1/2 inches in height, with a 1/4-20 threaded female insert and a hole depth of 5/8 inches. The smooth grip surface and black thermoplastic construction make it a dependable hand-control component for equipment panels, jigs, fixtures, and adjustment mechanisms. Maintenance technicians and machine operators are the primary end users.

This ball knob is suited for use on equipment requiring frequent manual adjustment where a secure, comfortable grip is needed. The 1/4-20 female insert thread is a common fastener size found in light industrial machinery, control panels, tool fixtures, and general manufacturing equipment. The smooth grip profile is appropriate for environments where a clean, snag-free knob surface is preferred. Black thermoplastic construction offers resistance to general shop conditions and everyday handling.

Key Features

• Female insert with 1/4-20 thread for direct installation onto male-threaded shafts or studs
• 1-5/8 inch diameter provides a comfortable grip for manual operation
• 1-1/2 inch overall height with 5/8 inch hole depth
• Smooth grip surface for clean, snag-free hand contact
• Black thermoplastic construction for durability in general industrial environments

Compatibility

Designed as a standard female insert ball knob for equipment and fixtures using 1/4-20 threaded shafts or studs in industrial and machine tool applications.

Installation Notes

Installation is performed by threading the female insert directly onto a 1/4-20 male-threaded shaft or stud by hand. Ensure the mating shaft thread is clean and free of debris before installation. Do not use power tools to drive the knob onto the shaft, as this may damage the thermoplastic insert. No special certifications or trade licensing are typically required for this hardware component.