Gibraltar 34237 Locking Plunger 5/16-18 5/8 in Thread

Product Description

The GIBRALTAR 34237 is a locking knob handle plunger with a knobless threaded stud design, built for use in industrial and mechanical positioning applications. Constructed from steel with a zinc-plated finish, this plunger features a 5/16-18 thread size and a thread length of 0.625 inches. The spring-loaded plunger delivers an initial end force of 1.5 pounds and a final end force of 6 pounds, providing reliable holding force once engaged. The maximum plunger diameter is 0.179 inches with a tolerance of plus 0.001 inches. Maintenance technicians and machine assemblers install this type of component in fixtures, jigs, and equipment panels where repeatable indexing or locking is required.

This plunger is suited for use in light industrial machinery, tool fixtures, enclosures, and positioning assemblies where a threaded stud mount is needed and no external knob is used. The knobless threaded stud configuration allows the unit to be installed flush or recessed, driven by a separate tool or actuator. The locking element engages to hold the plunger in the retracted position, which is useful in applications requiring hands-free operation or controlled release. Typical users include maintenance technicians, machine builders, and fixture fabricators working in manufacturing and trade environments.

Key Features

• Locking plunger design holds the plunger in the retracted position via an integrated locking element
• Knobless threaded stud body allows recessed or flush mounting without an external knob
• 5/16-18 stud thread size with a thread length of 0.625 inches for secure installation
• Spring force ranges from 1.5 pounds initial to 6 pounds final end force
• Steel construction with zinc-plated finish for corrosion resistance in shop environments
• Plunger projection of 0.1875 inches with a total plunger length of 1.438 inches

Compatibility

Designed as a standard-thread locking plunger for use in industrial fixtures, positioning equipment, and mechanical assemblies requiring a 5/16-18 threaded stud mount with a knobless configuration.

Installation Notes

Installation is performed by threading the stud body into a pre-tapped hole sized for a 5/16-18 thread. Ensure the mating bore is clean and properly tapped to the correct depth before installation. No power source is required, but confirm the locking element moves freely before final assembly. Follow applicable machinery safety standards and de-energize or secure any moving equipment before servicing components in the surrounding assembly.