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The GIBRALTAR G10-3088AT is a thermoplastic wing knob with a thru female insert locknut configuration, designed for tool-free hand tightening and secure clamping in light industrial, HVAC, and equipment assembly applications. The knob features a 5/16-18 thread size, a 2.5-inch head length, and a 0.34-inch hole diameter, making it well suited for adjustable mounting positions on panels, brackets, and fixtures. Constructed from black thermoplastic, it provides corrosion resistance and a firm grip without the need for tools. A 0.75-inch hub diameter supports stable seating against mating surfaces.
This wing knob is commonly used in HVAC equipment panels, filter housings, access door latches, electrical enclosures, and general industrial assembly where repeated manual adjustment is required. The locknut insert allows the knob to thread onto a stud or bolt and hold position under vibration without backing off. It is appropriate for both shop assembly and field service work where hand-operable fasteners are specified.
Designed as an OEM-style replacement or direct-fit hand knob for equipment assemblies using 5/16-18 threaded studs or bolts in residential and light commercial HVAC, electrical enclosure, and general industrial panel applications.
Installation requires no tools under normal hand-tightening conditions. Ensure the mating stud or bolt is clean and free of damage before threading the knob on. Power down or de-energize any equipment before servicing panels or enclosures where this knob is used as an access fastener. Do not exceed the torque limits of the thermoplastic body by using pliers or wrenches.
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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