Vlier S50P Threaded Spring Plunger 8-32 Steel Locking

Product Description

The VLIER S50P is a threaded spring plunger designed for precise, repeatable positioning and holding applications in mechanical assemblies. It features an 8-32 thread with a 5/8-inch thread length and a steel body with a steel nose. The plunger diameter runs from 0.069 to 0.070 inches with a 3/32-inch projection. It delivers an initial end force of 2.7 pounds and a final end force of 7.3 pounds, making it suitable for light-duty indexing, detent, and retention functions. A locking element is included to secure the plunger in place after adjustment. This type of component is typically installed by machinists, tool and die technicians, and mechanical assembly specialists.

The S50P is used in jigs, fixtures, tooling plates, and precision mechanical assemblies where controlled spring force is needed to hold, index, or position a moving component. The compact 8-32 threaded body fits standard tapped holes in metal workpieces and assemblies. The included locking element prevents the plunger from backing out under vibration or repeated cycling, making it appropriate for production and industrial environments where consistent performance is required over extended service intervals.

Key Features

• 8-32 thread size with 5/8-inch thread and body length for standard tapped hole installation
• Plunger projection of 3/32 inches provides controlled engagement depth
• Initial end force of 2.7 pounds and final end force of 7.3 pounds for reliable detent action
• Steel body and steel nose construction for durability in metal assembly applications
• Locking element included to prevent loosening from vibration or cycling
• Standard plunger length type for broad tooling and fixture compatibility

Compatibility

Designed as an OEM-style replacement or direct-install threaded spring plunger for mechanical assemblies, jigs, fixtures, and tooling plates that accept an 8-32 threaded spring plunger with a standard body length.

Installation Notes

Installation requires a properly tapped 8-32 hole in the host workpiece. Thread the plunger in by hand first, then use an appropriate hex key or driver to seat it to the desired depth before engaging the locking element. Always de-energize or fully disable any assembly before servicing spring plunger locations to avoid unintended movement. Do not overtighten, as this can deform the threads or restrict plunger travel.