Vlier NM58N Threaded Spring Plunger 3/8-16 Steel Locking

Product Description

The VLIER NM58N is a stubby threaded spring plunger designed for precision indexing, positioning, and light-duty detent applications in industrial and mechanical assemblies. The plunger body is made from steel and accepts a 3/8-16 thread with a body and thread length of 0.625 inches. The Delrin nose projects 0.11 inches from the body face and has a maximum diameter of 0.186 inches. Initial end force is 4.5 pounds, rising to a final end force of 18.5 pounds at full compression. A built-in locking element secures the plunger in the threaded bore after installation. This part is installed by machinists, maintenance technicians, and mechanical assembly professionals.

The NM58N is suited for use in jigs, fixtures, tooling plates, machine tool components, and general mechanical assemblies where a compact, repeatable spring-loaded detent is required. Its stubby profile makes it appropriate for applications with limited axial depth behind the mounting face. The steel body provides durability in typical shop and industrial environments, while the Delrin nose offers controlled contact force against mating surfaces without marring them.

Key Features

• 3/8-16 thread for straightforward installation in standard tapped holes
• 0.625-inch body and thread length in a stubby form factor for space-constrained applications
• Delrin nose material for low-friction, non-marring contact
• Steel body construction for durability in industrial use
• 4.5-pound initial end force and 18.5-pound final end force for reliable detent engagement
• Integrated locking element secures plunger position after installation

Compatibility

Designed as an OEM-style or retrofit threaded spring plunger for any application requiring a 3/8-16 threaded stubby spring plunger with a 0.625-inch body length and a locking element.

Installation Notes

A licensed machinist or qualified mechanical technician should install this plunger into a properly tapped 3/8-16 hole. De-energize or lock out any equipment before servicing the assembly. Use an appropriate hex key or spanner tool sized for the plunger head to avoid damaging the body or locking element. Do not exceed the rated final end force by over-driving the plunger into the bore.