Gibraltar 34251 Knob Handle Plunger 5/16-18 Non-locking

Product Description

The GIBRALTAR 34251 is a non-locking knob handle plunger with a threaded stud body, designed for use in positioning, indexing, and holding applications across industrial and mechanical assemblies. The 5/16-18 stud thread and 0.625-inch thread length allow secure mounting into standard tapped holes. The plunger delivers an initial end force of 1.5 pounds and a final end force of 6 pounds, providing reliable spring tension for detent and locating functions. With a maximum plunger diameter of 0.179 inches and a body length of 0.8125 inches, this is a compact unit suited for light-duty holding tasks. Installed by millwrights, machine builders, and maintenance technicians.

This plunger is suited for light mechanical assemblies where a flush or recessed knob profile is needed. The knobless threaded stud configuration allows the unit to sit within a panel or housing without a protruding knob, making it appropriate for tight-clearance installations. Typical applications include fixture positioning, tooling plates, enclosure latching, and equipment alignment jigs in industrial and commercial settings.

Key Features

• Non-locking plunger design for straightforward indexing and positioning use
• Knobless threaded stud style suits flush-mount and tight-clearance installations
• Initial end force of 1.5 pounds ramping to 6 pounds final end force
• 5/16-18 stud thread with 0.625-inch thread length for standard tapped-hole mounting
• Compact body length of 0.8125 inches with 0.1875-inch plunger projection
• Locking element included for secure thread engagement

Compatibility

Designed as an OEM-style replacement or direct-fit component for industrial assemblies requiring a 5/16-18 non-locking threaded stud plunger with a knobless configuration.

Installation Notes

Installation is performed by threading the stud into a pre-tapped hole of the appropriate size and torquing to the assembly specification. Disengage or de-energize any moving equipment before servicing positioning hardware. Confirm plunger projection clearance before final assembly to avoid binding. Use a thread-locking compound if vibration is present in the application.