Gibraltar 34059 Locking Plunger Threaded Stud 5/8-11

Product Description

The GIBRALTAR 34059 is a locking knob handle plunger with a knobless threaded stud configuration, designed for use in workholding, fixturing, and machine tool applications. This plunger uses a 5/8-11 thread and delivers an initial end force of 3 pounds building to a final end force of 6 pounds, providing a secure and repeatable locking engagement. The maximum plunger diameter is 0.311 inches, with a plunger projection of 0.3125 inches and a total plunger length of 2.186 inches. A licensed machinist or industrial maintenance technician typically installs this component in precision positioning or panel-mounting assemblies.

This plunger is suited for use in industrial machinery, tooling fixtures, jigs, and equipment panels where a flush or recessed actuation point is required. The knobless threaded stud design allows a separate knob or handle to be installed by the end user, providing flexibility in assembly configurations. The 1 inch thread length and 1.3125 inch length under head allow for straightforward integration into standard fixture plates and machined housings.

Key Features

• Locking plunger with integrated locking element for positive retention
• Knobless threaded stud design accepts user-supplied or aftermarket knob
• 5/8-11 external thread with 1 inch thread length for secure panel mounting
• Stud thread size of 1/2-13 for compatible knob or handle attachment
• Initial end force of 3 pounds, final end force of 6 pounds for consistent spring-loaded engagement
• Head height of 0.4375 inches (7/16 inch) with plunger diameter tolerance of plus 0.001 inches

Compatibility

Designed as a direct-fit locking plunger for industrial fixturing, tooling jigs, and machine panels requiring a 5/8-11 threaded mount with a knobless stud configuration.

Installation Notes

Installation is typically performed by a machinist or industrial maintenance technician using standard hand tools. Power down or de-energize any associated equipment before servicing plunger assemblies mounted on active machinery. Thread engagement should be verified for full depth before applying locking torque. Do not exceed the rated end force range when compressing the plunger during installation.