Vlier PH50 Threaded Spring Plunger 8-32 5/8in Steel

Product Description

The VLIER PH50 is a standard threaded spring plunger designed to provide controlled, repeatable force in indexing, positioning, and locking applications. It features an 8-32 thread with a 5/8 inch thread length and delivers an initial end force of 2.7 pounds, a middle end force of 5.0 pounds, and a final end force of 7.3 pounds. The plunger diameter measures 0.070 inches at maximum, and the steel body and steel nose construction provide durability in light industrial and mechanical assembly environments. Machinists, toolmakers, and mechanical assembly technicians install this component in fixtures, jigs, and equipment panels.

The PH50 is suited for applications requiring a small-diameter, fine-threaded spring plunger with a standard 3/32 inch projection. Typical installation scenarios include machine tool fixtures, hinged panels, sliding drawers, and precision positioning assemblies where a repeatable detent or retention force is needed. The 8-32 thread size makes it compatible with tapped holes in aluminum, steel, and plastic housings used in light-duty industrial and instrumentation equipment.

Key Features

• 8-32 thread size with 5/8 inch thread length for installation in standard tapped holes
• Initial end force of 2.7 pounds and final end force of 7.3 pounds for consistent detent performance
• Standard 3/32 inch plunger projection for controlled engagement depth
• Steel body and steel nose construction for mechanical durability
• No locking element - allows full plunger travel without thread adhesive requirement
• Hex size of 0.063 inches for installation and torque adjustment with appropriate tooling

Compatibility

Designed as a standard OEM-style threaded spring plunger for use in any application with an 8-32 tapped hole requiring a standard-projection, spring-loaded detent element.

Installation Notes

Installation is typically performed by machinists or mechanical assemblers using appropriate hex tooling sized to the 0.063 inch hex. Ensure the receiving tapped hole is clean and free of debris before threading in the plunger. Do not overtighten, as the small thread diameter is susceptible to galling in steel or damage in softer materials. Verify plunger projection and spring force are appropriate for the detent load before final assembly.