Vlier NM53P Threaded Spring Plunger 10-32 Steel Locking

Product Description

The VLIER NM53P is a stubby threaded spring plunger designed for precise, repeatable positioning and light-duty indexing in mechanical assemblies. It features a 10-32 thread size with a 0.468 inch thread length and a maximum plunger diameter of 0.093 inches. The plunger projection is 0.065 inches, providing a low-profile nose engagement suited to tight-clearance applications. The steel body delivers durability in demanding production and tooling environments, while the Delrin nose reduces wear on mating surfaces. A locking element is included to prevent the plunger from backing out under vibration. Licensed machinists, toolmakers, and assembly technicians typically install this component.

The NM53P is used in applications where a compact, threaded spring plunger is needed to locate, retain, or index a moving component with controlled force. Initial end force is 0.75 pounds and final end force is 2.5 pounds, making it appropriate for light-load detent and positioning functions. Its stubby body length of 0.468 inches suits installations with limited axial depth, such as fixture plates, jigs, tooling blocks, and precision mechanical assemblies.

Key Features

• 10-32 thread with 0.468 inch thread length for standard tapped-hole installation
• Stubby plunger body at 0.468 inches total length fits shallow-depth applications
• 0.065 inch plunger projection provides low-profile nose engagement
• Delrin nose material reduces wear and drag on mating contact surfaces
• Steel body construction for strength and longevity in production environments
• Integrated locking element prevents loosening under vibration

Compatibility

Designed as an OEM-style replacement or direct-install threaded spring plunger for standard 10-32 tapped holes in mechanical fixtures, tooling, and precision assemblies.

Installation Notes

Installation requires a properly tapped 10-32 hole with sufficient thread engagement to match the 0.468 inch thread length. Use appropriate thread-locking procedures if the locking element alone is insufficient for the application environment. Ensure the mating surface is clean and free of burrs before installation to avoid damaging the Delrin nose. Consult applicable machinery safety procedures and de-energize or lock out any equipment before servicing assemblies that contain this plunger.