Gibraltar SW10-4A-PT-G Threaded Spring Plunger 1/4-20

Product Description

The GIBRALTAR SW10-4A-PT-G is a threaded spring plunger designed for indexing, positioning, and light-duty detent applications in industrial and mechanical assemblies. It features a 1/4-20 thread with a 1 inch thread length, a steel body, and a steel nose. The plunger delivers 1 pound of initial end force and 4 pounds of final end force, making it suitable for repeatable positioning tasks where controlled resistance is required. A locking element is incorporated into the design to secure the plunger in place once installed, preventing loosening under vibration or repeated cycling.

This spring plunger is used in machine tool fixtures, jigs, panel assemblies, and general-purpose mechanical hardware applications. It is well suited for OEM builds and maintenance replacement work where a compact, threaded detent component is needed. The 3/16 inch plunger projection and 0.118 inch maximum plunger diameter make it appropriate for tight-tolerance assemblies where minimal clearance is available. Installation is typically performed by machinists, millwrights, or maintenance technicians working on mechanical subassemblies.

Key Features

• 1/4-20 thread size with 1 inch thread length for standard tapped-hole installation
• Steel body and steel nose for durability in industrial environments
• Locking element prevents back-out under vibration or cyclic loading
• 1 pound initial end force and 4 pound final end force for consistent detent performance
• 3/16 inch plunger projection suitable for shallow engagement applications
• Maximum plunger diameter of 0.118 inches for use in tight clearance assemblies

Compatibility

Designed as a standard threaded spring plunger replacement for mechanical assemblies using 1/4-20 tapped holes requiring a steel-body locking-style plunger with a 1 inch thread length.

Installation Notes

Install into a properly tapped 1/4-20 through or blind hole using an appropriate hex key or spanner tool sized for the plunger body. De-energize or lock out any equipment before servicing assemblies containing spring plungers. Torque to the assembly specification for the receiving component to engage the locking element fully. Confirm plunger movement is unobstructed and projection is within the required engagement range before returning the assembly to service.