Gibraltar 34240SS Locking Plunger 5/8-11 Threaded Stud

Product Description

The GIBRALTAR 34240SS is a locking knob handle plunger with a knobless threaded stud configuration, designed for use in workholding, fixturing, and mechanical positioning applications. The plunger features a 5/8-11 thread size with a 1 inch thread length and a maximum plunger diameter of 0.373 inches. It delivers an initial end force of 5 pounds and a final end force of 10 pounds, making it well suited for applications requiring controlled, repeatable positioning under moderate spring load. A licensed machinist or industrial maintenance technician typically installs this component in jigs, fixtures, and assembly tooling.

This plunger is used in industrial and manufacturing environments where a locking mechanism is required to hold a position under load. The knobless threaded stud design allows the unit to be installed in locations where a protruding knob would interfere with adjacent components or tooling surfaces. The 1-5/16 inch length under the head and a plunger projection of 5/16 inch make it appropriate for moderate-depth mounting applications. It is commonly found in machine tool fixtures, jigs, and precision workholding devices in both production and maintenance shop settings.

Key Features

• Locking plunger design holds position under load without external fastening
• Knobless threaded stud configuration for low-profile installation in tight spaces
• 5/8-11 external thread with 1 inch thread length for secure mounting
• Initial end force of 5 pounds rising to a final end force of 10 pounds
• Plunger projection of 5/16 inch with a total plunger length of 2.186 inches
• Stud thread size of 1/2-13 for compatibility with standard threaded mounting holes

Compatibility

Designed as an OEM-style replacement or direct-install component for industrial fixtures and workholding assemblies that accept a 5/8-11 threaded locking plunger with a knobless stud mount.

Installation Notes

Installation is performed by a machinist or mechanical maintenance technician using standard hand tools. Ensure the mounting surface is de-energized and any moving machinery is fully stopped and locked out before installing or removing the plunger. Thread the stud into the receiving hole to the specified engagement depth and verify the locking element engages and releases smoothly before returning the assembly to service. Do not exceed the rated end force for the plunger in the installed application.