Gibraltar KN1C--B7-L-21-G Ball Knob Female Insert 1-7/8 in

Product Description

The GIBRALTAR KN1C--B7-L-21-G is a thermoplastic ball knob with a female insert mount designed for use on threaded fasteners and machine controls. It accepts a 5/8-11 threaded stud and provides a smooth, rounded grip surface for manual adjustment, clamping, and positioning applications. The knob measures 1-7/8 inches in diameter and 1-3/4 inches in height, with a hole depth of 5/8 inches. The black thermoplastic construction offers corrosion resistance and a firm, durable grip. This part is installed by machine builders, millwrights, maintenance technicians, and industrial equipment assemblers.

This ball knob is suited for use on machine tools, fixtures, jigs, enclosures, and industrial equipment wherever a hand-adjustable threaded control point is needed. Its female insert design threads directly onto a male stud or bolt already in place on the equipment. The smooth grip surface and ball profile make it practical for repetitive manual adjustments in production and maintenance environments.

Key Features

• Female insert mount accepts 5/8-11 threaded studs
• 1-7/8 inch diameter ball knob for comfortable hand operation
• 1-3/4 inch overall height with 5/8 inch hole depth
• Thermoplastic construction resists corrosion and provides lightweight durability
• Smooth grip surface for clean, unobstructed hand adjustment
• Black finish for standard industrial appearance

Compatibility

Designed as a standard female insert ball knob for use with 5/8-11 threaded studs on machine tools, industrial fixtures, and equipment requiring manual hand-adjustable controls.

Installation Notes

Installation is performed by threading the knob directly onto an existing 5/8-11 male stud or bolt. Ensure the mating stud thread is clean and free of debris before installation. Do not use power tools to install or remove the knob, as thermoplastic inserts can be damaged by over-torquing. Disengage or power down any moving machinery before servicing or replacing knobs on active equipment.