Gibraltar 34252 Knob Handle Plunger 3/8-16 Steel

Product Description

The GIBRALTAR 34252 is a non-locking knob handle plunger with a threaded stud body, designed for use in positioning, indexing, and locating applications across light industrial and mechanical assembly environments. The plunger features a 3/8-16 external thread with a 0.75 inch thread length and a maximum plunger diameter of 0.216 inches. Spring end force ranges from 1.5 pounds initial to 8 pounds final, making it suitable for applications requiring controlled, repeatable plunger engagement. Constructed from steel with a zinc-plated finish, the 34252 is installed by machine builders, maintenance technicians, and fabrication professionals.

This plunger is used in machine tool fixtures, jigs, workholding assemblies, and general mechanical positioning systems. The knobless threaded stud design allows the unit to be threaded directly into a tapped hole without requiring a knob for actuation. The compact body length of 0.9688 inches and plunger projection of 0.2188 inches make it well-suited for tight-clearance mounting locations in both light industrial and precision assembly applications.

Key Features

• Non-locking plunger type for straightforward spring-loaded engagement
• 3/8-16 external thread with 0.75 inch thread length for secure installation in tapped housings
• Spring force range of 1.5 pounds initial to 8 pounds final end force
• Knobless threaded stud design allows flush or recessed mounting
• Steel construction with zinc-plated finish for corrosion resistance in industrial environments
• Stud thread size of 5/16-18 for standard hardware compatibility

Compatibility

Designed as an OEM-style replacement or direct installation component for mechanical fixtures, jigs, and positioning assemblies that accept a 3/8-16 threaded plunger with a non-locking spring mechanism.

Installation Notes

Installation is performed by threading the stud directly into a pre-tapped 3/8-16 hole using standard hand tools. Ensure the mating thread is clean and free of debris before installation. Disengage or de-energize any moving components in the assembly before servicing or replacing the plunger. Do not exceed the rated final end force when compressing the plunger during installation or operation.