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The GIBRALTAR BBK-055-G is a smooth-grip brass ball knob designed for threaded-hole mounting in industrial, mechanical, and trade applications. With a diameter of 1.88 inches and a 5/8-18 threaded hole, this knob provides a secure, hand-tightened interface on machinery, fixtures, jigs, and equipment panels. The natural brass finish resists corrosion and delivers a clean appearance suited for both shop and field use. A hole depth of 0.75 inches provides adequate thread engagement for reliable torque transfer. Installers in maintenance, HVAC, electrical, and light manufacturing trades reach for this type of knob when equipment requires frequent manual adjustment or removal without tools.
This ball knob is suited for use on control panels, equipment enclosures, positioning fixtures, and mechanical assemblies that call for a 5/8-18 threaded interface. Its smooth grip surface works well in environments where hand-tightening with consistent feel is needed. The compact 1.88-inch diameter keeps it practical for panel-mounted hardware where clearance is limited. It installs as a single unit and is appropriate for both original equipment builds and maintenance replacement scenarios.
Designed as a standard threaded-hole ball knob for equipment and fixtures requiring a 5/8-18 thread interface in industrial, mechanical, and trade service applications.
This knob is installed by hand-threading onto a compatible 5/8-18 stud or shaft. Ensure the mating thread is clean and free of debris before installation. Power down or de-energize any equipment before servicing associated hardware. Do not exceed hand-tight torque unless a tool-assist method is specified by the equipment manufacturer.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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