Vlier SSFRS250 Locking L Handle Spring Plunger 1/4-20

Product Description

The VLIER SSFRS250 is a locking L handle spring plunger designed for precise, repeatable positioning and locking in mechanical assemblies. It features a 1/4-20 thread with a 0.5 inch thread length and a stainless steel body and handle, making it suitable for corrosion-resistant applications. The plunger delivers an initial end force of 0.12 pounds and a final end force of 0.5 pounds, providing controlled spring resistance. Machinists, toolmakers, and mechanical assembly technicians install these plungers in fixtures, jigs, and machine components where positive locking and indexed positioning are required.

This spring plunger is intended for use in light-duty mechanical positioning applications across industrial and manufacturing environments. The locking L handle allows the operator to retract and lock the plunger in the retracted position, enabling part loading and unloading without constant manual pressure. It is well suited for use in fixture plates, assembly jigs, and precision tooling where repeatable positioning is critical.

Key Features

• Locking L handle retracts and holds plunger for hands-free part handling
• Stainless steel handle and body for corrosion resistance in demanding environments
• 1/4-20 thread for compatibility with standard tapped holes in tooling plates and fixtures
• Low initial end force of 0.12 pounds rising to 0.5 pounds final end force for controlled engagement
• Compact plunger projection of 0.2 inches suits shallow indexing applications
• Small overall package suits confined fixture layouts

Compatibility

Designed as an OEM-style replacement or direct installation spring plunger for standard 1/4-20 tapped holes in fixture plates, jigs, and mechanical assemblies requiring a locking L handle plunger.

Installation Notes

Installation is performed by threading the plunger into a pre-tapped 1/4-20 hole to the specified thread engagement depth. Power down or de-energize any associated equipment before servicing plungers in live fixtures or automated machinery. Use appropriate hand tools for the 0.25 inch hex size; avoid overtightening, which can distort the plunger housing or affect spring performance. Follow applicable machinery safety standards and facility lockout procedures during installation.