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The VLIER M50 is a stubby threaded spring plunger designed for applications requiring high end force in restricted or confined spaces. Built with a steel body and steel nose, this plunger features an 8-36 thread size with a thread length of 0.437 inches and a maximum plunger diameter of 0.07 inches. The short projection of 0.052 inches makes it well suited for tight assemblies where standard-length plungers cannot fit. It delivers an initial end force of 1.5 pounds and a final end force of 4.75 pounds, providing reliable spring tension in demanding positioning and detent applications. Licensed technicians, machinists, and assembly professionals typically install this component.
The M50 is intended for use in mechanical assemblies, tooling fixtures, and precision equipment where space constraints prevent the use of full-length plungers. Its stubby profile and high final end force make it a practical choice for detent positioning, indexing, and locking functions in compact housings. Typical installation environments include industrial machinery, jigs, and instrument enclosures where consistent spring force and minimal protrusion are required.
Designed as an OEM-style threaded spring plunger replacement for mechanical assemblies requiring an 8-36 thread size and stubby projection in high-end-force, restricted-space applications.
Installation is typically performed by machinists or mechanical assemblers using standard threading tools appropriate for 8-36 fasteners. Ensure the receiving threaded bore is clean and free of debris before installing the plunger. Disengage or de-energize the host assembly before servicing spring plungers to prevent unintended actuation. Do not over-torque during installation, as the small thread size is susceptible to damage.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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