Vlier M58N Threaded Spring Plunger 3/8-16 Steel Locking

Product Description

The VLIER M58N is a stubby threaded spring plunger designed for applications requiring high end force within restricted space. The steel body accepts a 3/8-16 thread and measures 0.625 inches in body length. The steel nose plunger delivers an initial end force of 4.5 pounds and a final end force of 18.5 pounds, with a maximum plunger diameter of 0.186 inches and a projection of 0.11 inches. A built-in locking element secures the plunger in position once installed. This component is typically installed by machinists, toolmakers, and mechanical assembly technicians working with fixtures, jigs, and precision equipment.

The M58N fits applications where high end force is needed in tight or restricted spaces. Its stubby profile makes it suitable for use in fixture plates, tooling bodies, and mechanical assemblies where standard-length plungers would not fit. The 3/8-16 thread allows installation into standard tapped holes using common hand tools. This plunger is appropriate for both production line tooling and custom fabrication setups where repeatable, controlled detent or positioning force is required.

Key Features

• Stubby plunger length type suited for restricted-space installations
• 3/8-16 thread with 0.625 inches thread length for standard tapped hole compatibility
• Initial end force of 4.5 pounds and final end force of 18.5 pounds for high-force positioning
• Steel body and steel nose for durability in industrial environments
• Built-in locking element prevents loosening under vibration or repeated cycling
• Maximum plunger diameter of 0.186 inches with 0.11 inches projection

Compatibility

Designed as a direct-fit threaded spring plunger for fixtures, jigs, and mechanical assemblies requiring a 3/8-16 tapped hole and high end force in restricted space.

Installation Notes

Installation requires a properly tapped 3/8-16 hole in the receiving component. Power down or de-energize any associated equipment before servicing mechanical assemblies containing this plunger. Use the appropriate thread engagement and torque the plunger body with a hex key or wrench to the assembly specification - do not overtighten, as this can damage the locking element or bore. Confirm plunger projection and end force match the application requirement before finalizing the installation.