Vlier M50AP Threaded Spring Plunger 8-32 Steel Body

Product Description

The VLIER M50AP is a stubby threaded spring plunger designed for positioning, indexing, and light-duty locking applications where axial force control and space constraints are critical. Built with a steel body and steel nose, this plunger delivers 1.5 pounds initial end force and 4.75 pounds final end force within a compact 0.437 inch thread length. The 8-32 thread size allows installation into standard tapped holes in machine components, fixtures, and assemblies. A built-in locking element secures the plunger at the desired engagement depth, preventing rotation or back-out during operation. Licensed mechanical and industrial technicians, toolmakers, and equipment assemblers typically specify this part where reliable spring force retention is required in confined spaces.

The M50AP is suited for high end force, restricted space applications in industrial machinery, precision fixtures, tooling assemblies, and light mechanical devices. Its stubby plunger profile keeps the installed footprint minimal, making it a practical choice when clearance behind or around the mounting point is limited. The 0.052 inch plunger projection delivers a controlled engagement stroke within a very short travel range. This part is appropriate for both OEM assembly builds and aftermarket maintenance replacement in equipment using 8-32 threaded spring plungers.

Key Features

• 8-32 thread size with 0.437 inch thread length for installation in standard tapped holes
• Stubby plunger type rated for high end force in restricted space applications
• 1.5 pound initial end force and 4.75 pound final end force for consistent spring resistance
• 0.052 inch plunger projection provides short, controlled engagement stroke
• Locking element prevents back-out and maintains set position under vibration or load
• Steel body and steel nose for durability in industrial service conditions

Compatibility

Designed as an OEM-style replacement or new-build component for assemblies requiring an 8-32 threaded spring plunger with a stubby profile and locking element in high end force, restricted space configurations.

Installation Notes

Installation requires a properly tapped 8-32 hole at the correct depth to engage the full thread length. Use an appropriate hex key or driver suited to the plunger body drive feature and avoid over-torquing, which can deform the locking element or thread. Ensure the mating bore or pocket allows free plunger travel through the full 0.052 inch projection range. Confirm the assembly is de-energized and depressurized before servicing any mechanism that houses this plunger.