Gibraltar 34026 Locking Plunger Threaded Stud 3/8-16

Product Description

The GIBRALTAR 34026 is a locking knob-style plunger with a knobless threaded stud configuration, designed for indexed positioning and retention applications in industrial and mechanical assemblies. The plunger features a 3/8-16 thread with a 0.75 inch thread length and a maximum plunger diameter of 0.186 inches. Spring end force ranges from 1.5 pounds initial to 8 pounds final, providing positive locking engagement. The threaded stud mount allows installation without an external knob, making it suitable for recessed or low-profile installations. Machinists, toolmakers, and maintenance technicians install this type of component in jigs, fixtures, and machine housings.

This plunger is used in industrial tooling, fixture plates, machine panels, and positioning assemblies where a spring-loaded locking element is needed to hold a component in a repeatable position. The knobless threaded stud design allows the plunger to be driven or adjusted with a wrench or socket rather than by hand, which suits enclosed or tight-clearance mounting locations. It is appropriate for both light and medium-duty indexing applications where controlled spring force is required.

Key Features

• Locking plunger type with positive locking element for indexed retention
• Knobless threaded stud (5/16-18 stud thread) for wrench-driven installation
• 3/8-16 external thread with 0.75 inch thread length for secure panel mounting
• Spring end force from 1.5 pounds initial to 8 pounds final
• Plunger projection of 0.2188 inches with a diameter tolerance of +0.001 inches
• Compact head height of 0.406 inches suits low-profile assemblies

Compatibility

Designed as an OEM-style replacement or direct installation component for industrial jigs, fixtures, machine panels, and positioning assemblies requiring a 3/8-16 threaded locking plunger with a knobless stud configuration.

Installation Notes

Installation is performed by threading the 3/8-16 shank into a tapped hole in the mounting panel or fixture plate using a wrench on the threaded stud. De-energize or lock out any machine before servicing components in the assembly. Do not overtighten the mounting thread, as this can restrict plunger travel and reduce spring performance. Verify plunger projection clearance against mating components before finalizing the installation.