Gibraltar 34146 Non-locking Plunger 5/16-18 Thread Steel

Product Description

The GIBRALTAR 34146 is a non-locking spring plunger designed for indexing, positioning, and light-duty clamping applications in mechanical assemblies. It features a threaded stud body with a 5/16-18 thread size and a 5/8-inch thread length, allowing secure installation into tapped holes in metal fixtures and machine components. The steel construction with a zinc finish provides corrosion resistance suitable for industrial environments. Spring force ranges from 1.5 pounds initial end force to 6 pounds final end force, giving technicians predictable resistance during engagement. The knobless threaded stud style is intended for flush or recessed installations where a protruding knob is not practical.

This plunger is used in mechanical and industrial assembly applications where repeatable part positioning or panel retention is needed. It fits into tapped holes requiring a 5/16-18 thread and is appropriate for machine builders, maintenance technicians, and fabrication professionals working on fixtures, jigs, enclosures, and equipment panels. The compact plunger projection of 3/16 inches suits installations with limited clearance.

Key Features

• Non-locking spring plunger with 1.5 pound initial end force and 6 pound final end force
• 5/16-18 thread size with 5/8-inch thread length for secure tapped-hole installation
• Knobless threaded stud configuration for low-profile or recessed mounting
• Maximum plunger diameter of 0.155 inches with a diameter tolerance of plus 0.001 inches
• Steel body with zinc finish for durability and corrosion resistance
• Plunger projection of 3/16 inches suitable for tight-clearance assemblies

Compatibility

Designed as a direct-fit replacement or new-installation spring plunger for mechanical assemblies, fixtures, and equipment panels requiring a 5/16-18 threaded body with a knobless stud configuration.

Installation Notes

Installation is performed by threading the stud body into a pre-tapped 5/16-18 hole using a wrench applied to the hex body or shoulder. Ensure the mating hole is clean and properly tapped to the correct depth before installation. Do not overtighten, as excessive torque can distort the plunger housing or affect spring function. Verify plunger projection and spring force are compatible with the intended indexing or retention load before finalizing the assembly.