Vlier PH52P Threaded Spring Plunger 10-32 Steel Locking

Product Description

The VLIER PH52P is a threaded spring plunger designed for precise, repeatable positioning and locking in light-duty mechanical assemblies. It features a steel body and steel nose with a 10-32 thread size and a 3/4 inch thread length. The plunger delivers an initial end force of 2.9 pounds and a final end force of 11.1 pounds, with a middle end force of 7.0 pounds. A built-in locking element secures the plunger in position after installation, eliminating the need for a separate jam nut. Machinists, toolmakers, and mechanical assembly technicians install this type of hardware in jigs, fixtures, and precision positioning mechanisms.

This plunger suits applications requiring controlled detent or stop action in metal fixtures, machine tooling, and industrial assembly jigs. The standard plunger length type and compact 0.092 inch maximum plunger diameter make it appropriate for tight-clearance installations. The 1/8 inch projection provides a minimal but defined engagement depth, suitable for light-load indexing and alignment tasks in both production and maintenance environments.

Key Features

• 10-32 thread size with 3/4 inch thread length for standard tapped-hole installation
• Steel body and steel nose for durability in metal fixture applications
• Locking element included, eliminating the need for a separate jam nut
• Initial end force of 2.9 pounds and final end force of 11.1 pounds for controlled engagement
• 0.092 inch maximum plunger diameter fits tight-clearance bores
• 1/8 inch plunger projection provides defined, repeatable engagement depth

Compatibility

Designed as an OEM-style threaded spring plunger for standard 10-32 tapped holes in jigs, fixtures, and mechanical positioning assemblies requiring a locking-element style plunger.

Installation Notes

Installation is performed by threading the PH52P into a pre-tapped 10-32 hole using a hex key sized to the 0.063 inch hex drive. The locking element engages the thread upon tightening to hold the plunger at the desired depth without a jam nut. Ensure the mating bore is clean and free of debris before installation. De-energize or lock out any equipment the fixture is mounted to before servicing or replacing spring plungers.