Vlier SSM51AP Threaded Spring Plunger 8-32 Stainless Steel

Product Description

The VLIER SSM51AP is a stubby threaded spring plunger designed for applications requiring high end force in restricted or tight installation spaces. Built with a stainless steel body and stainless steel nose, it delivers reliable repeatable positioning and locking action through a built-in locking element. The 8-32 thread size and 0.437-inch thread length make this a compact, precise component suited for light mechanical assemblies. Initial end force is 0.5 pounds and final end force is 1.5 pounds, providing controlled resistance across the plunger travel. The maximum plunger diameter is 0.07 inches with a projection of 0.052 inches. Mechanical engineers, tooling technicians, and precision assembly specialists are the primary installers of this component.

The SSM51AP is suited for use in high end force, restricted-space applications where a standard-length plunger will not fit. Its stubby body length of 0.437 inches allows installation in shallow-threaded bores or compact fixtures. Typical use cases include jigs, fixtures, tooling plates, and precision mechanical assemblies where consistent detent or locking action is required in a minimal footprint. The stainless steel construction supports use in environments where corrosion resistance is a consideration.

Key Features

• Stubby plunger length type for restricted-space installations
• Stainless steel body and nose for corrosion resistance
• Built-in locking element for secure positioning
• 0.5 pound initial end force and 1.5 pound final end force
• 8-32 thread size with 0.437-inch thread length
• 0.052-inch plunger projection and 0.07-inch maximum plunger diameter

Compatibility

Designed for use in high end force and restricted-space applications; compatible with 8-32 threaded bores in mechanical assemblies, jigs, fixtures, and tooling components requiring a stubby spring plunger configuration.

Installation Notes

Installation is performed by mechanical technicians or tooling specialists using standard thread-engagement tools appropriate for 8-32 fasteners. Ensure the mating bore is clean and properly tapped to the correct thread specification before installation. Do not overtighten, as this may damage the locking element or plunger mechanism. Verify end force requirements are met by the application before finalizing the installation.