Gibraltar 34046 Locking Plunger 3/8-16 Stainless Steel

Product Description

The GIBRALTAR 34046 is a locking knob handle plunger designed for indexing and positioning applications in industrial and mechanical assemblies. This unit features a 3/8-16 thread size with a 0.75 inch thread length and a knobless threaded stud configuration, meaning the stud is installed and actuated without an attached knob. The maximum plunger diameter is 0.186 inches with a plunger projection of 0.2188 inches. End force ranges from 1.5 pounds initial to 8 pounds final, providing reliable spring-loaded holding force. Constructed from stainless steel with a zinc-plated finish, this plunger is suited for environments requiring corrosion resistance and dimensional consistency.

The 34046 is used in machine tool fixtures, jigs, workholding devices, and equipment panels where a spring-loaded locking plunger is needed for repeatable positioning. The threaded stud design allows direct installation into tapped holes without a knob assembly, making it appropriate for low-clearance or flush-mount applications. It fits typical industrial fabrication and maintenance scenarios handled by millwrights, machine builders, and maintenance technicians.

Key Features

• Locking plunger design with a locking element that holds the plunger in the retracted position
• Spring end force from 1.5 pounds initial to 8 pounds final for consistent indexing load
• Knobless threaded stud body accepts a separate knob or operates without one
• Stainless steel construction with zinc-plated finish for corrosion resistance
• Tight plunger diameter tolerance of plus 0.001 inches for precise fitment
• Compact overall length with 0.9688 inch length under head and 1.691 inch plunger length

Compatibility

Designed as a direct-install locking plunger for tapped holes with a 3/8-16 thread, suitable for industrial fixtures, jigs, and positioning equipment requiring a knobless threaded stud configuration.

Installation Notes

Installation is performed by threading the stud body into a prepared 3/8-16 tapped hole to the appropriate torque for the application per the equipment manufacturer or applicable machine building standards. Power down or de-energize any associated equipment before servicing or replacing plungers in live assemblies. Use appropriate thread lubricant or threadlocker as required by the application. Verify plunger projection and clearance against the mating detent or index hole before finalizing installation.