Vlier SSM59N Threaded Spring Plunger 3/8-16 Stubby

Product Description

The VLIER SSM59N is a stubby threaded spring plunger engineered for applications that demand high end force in restricted or confined spaces. It features a 3/8-16 thread with a body and thread length of 0.625 inches, a plunger diameter of 0.186 inches, and a projection of 0.11 inches. The body and nose are both constructed from stainless steel, providing corrosion resistance in demanding environments. A locking element is incorporated to secure the plunger in position after installation. This part is installed by machinists, maintenance technicians, and mechanical assembly professionals working with indexing, positioning, or detent mechanisms in precision equipment.

The SSM59N is suited for use in high end force, restricted-space applications where a standard-length plunger body cannot be accommodated. The stubby body profile allows installation in shallow bores or tight assemblies without sacrificing spring performance. Common scenarios include fixture positioning, jig alignment, and light-duty detent work in industrial or mechanical assemblies. The stainless steel construction makes it appropriate for environments subject to moisture, cleaning agents, or light chemical exposure.

Key Features

• Stubby plunger length type - fits in shallow bores and restricted-space assemblies
• 3/8-16 thread for broad compatibility with standard tapped holes
• Stainless steel body and nose for corrosion resistance
• Locking element included to hold plunger position after setting
• 1.5 lb initial end force and 5 lb final end force for reliable detent and positioning performance
• 0.186 inch maximum plunger diameter with 0.11 inch projection

Compatibility

Designed as a direct-fit threaded spring plunger for tapped 3/8-16 holes in industrial fixtures, jigs, and mechanical assemblies requiring high end force in restricted-space configurations.

Installation Notes

Installation is performed by threading the plunger into a pre-tapped 3/8-16 hole using standard hand tools; a hex key or appropriate driver is typically used to seat and lock the element. Ensure the mating bore is clean and free of debris before installation. Disengage any loaded mechanisms and relieve spring tension before removal or replacement. Torque to the fastener specification provided by the equipment manufacturer - do not over-torque stainless steel threads, as galling can occur.