Vlier FR375P Locking L Handle Plunger 3/8-16 Steel

Product Description

The VLIER FR375P is a locking L handle spring plunger designed for indexing, positioning, and locking applications in industrial and mechanical assemblies. It features a 3/8-16 thread size with a thread length of 1.18 inches and a body length of 2 inches. The plunger diameter is 0.25 inches with a projection of 0.56 inches. End force ranges from 0.75 pounds initial to 3.75 pounds final, providing reliable holding force in service. The steel construction and integrated locking element make this plunger well suited for high-cycle or vibration-prone environments where unintended rotation or retraction must be prevented. Licensed technicians and mechanical assemblers install this component during equipment build or field maintenance.

The FR375P is used in industrial machinery, fixtures, jigs, and tooling assemblies where a manually operated locking plunger is required. The L handle allows for tool-free engagement and disengagement, making it practical in applications with frequent adjustment cycles. The locking element secures the plunger in the retracted or extended position, which is useful in assembly line fixtures, machine guarding, and positioning equipment. Installation is straightforward into a tapped 3/8-16 hole in a matching body or housing.

Key Features

• Locking element holds plunger in retracted or extended position to prevent unintended movement
• L handle design allows tool-free operation for frequent-cycle applications
• 3/8-16 thread with 1.18-inch thread length for standard tapped-hole installation
• End force range of 0.75 pounds initial to 3.75 pounds final for reliable indexing force
• Steel handle and body construction for durability in industrial environments
• 0.56-inch plunger projection provides positive engagement depth

Compatibility

Designed as a direct-fit replacement or new-installation locking spring plunger for industrial machinery, fixtures, and tooling assemblies using a standard 3/8-16 tapped mounting hole.

Installation Notes

Installation is performed by threading the FR375P into a properly tapped 3/8-16 hole using the hex feature for torque application. Power down or de-energize any associated equipment before service. Verify plunger projection and end force requirements match the application before installation. Do not over-torque the body, as this may affect plunger travel and locking function.