Vlier NNS60 Threaded Spring Plunger 1/2-13 Steel

Product Description

The VLIER NNS60 is a standard threaded spring plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. The body is machined from steel with a Delrin nose, providing corrosion resistance at the contact point while maintaining structural rigidity in the body. Thread size is 1/2-13 with a 1-1/4 inch thread length. The plunger projects 1/4 inch and delivers an initial end force of 6.6 pounds, rising to a final end force of 17.4 pounds at full compression. This part is installed by machinists, toolmakers, and mechanical technicians in production fixtures, jigs, and equipment assemblies.

The NNS60 is suited for use in threaded holes in fixture plates, machine frames, and industrial equipment where repeatable spring-loaded positioning or detent action is required. The steel body threads directly into a tapped 1/2-13 hole. The Delrin nose reduces marring on mating surfaces, making it appropriate for applications where the contact surface must be protected from metal-to-metal wear. It fits standard production environments in manufacturing, tooling, and general mechanical assembly.

Key Features

• Steel body construction for durable, rigid installation in tapped holes
• Delrin nose minimizes surface marring on mating contact points
• 1/2-13 thread size with 1-1/4 inch thread length for secure engagement
• 6.6 lb initial end force and 17.4 lb final end force for predictable detent resistance
• 1/4 inch plunger projection with plunger diameter range of 0.246 to 0.248 inches
• No locking element - standard configuration for straightforward installation and adjustment

Compatibility

Designed as a standard OEM-style threaded spring plunger for any application requiring a 1/2-13 tapped hole and a 1-1/4 inch thread engagement depth in fixture, jig, or mechanical assembly applications.

Installation Notes

Installation is performed by machinists or mechanical technicians using a standard hex wrench or spanner tool appropriate for the plunger body. The receiving hole must be tapped to 1/2-13 specification and cleared of debris before threading in the plunger. De-energize or lock out any associated equipment before servicing or replacing spring plungers in active assemblies. Do not exceed the rated final end force by over-compressing the plunger, as this can damage the internal spring.