Gibraltar SWN10-4Y-G Threaded Spring Plunger 1/4-28

Product Description

The GIBRALTAR SWN10-4Y-G is a threaded spring plunger designed for indexing, positioning, and light-duty latching applications in industrial assemblies, fixtures, and tooling. The plunger features a 1/4-28 thread size with a 1 inch thread length and a standard-length steel body. The nylon nose provides a non-marring contact point, making it suitable for use against finished surfaces or soft materials. Initial end force is 1 pound with a final end force of 4 pounds, giving technicians and assemblers a predictable, repeatable spring load for locating or retaining components. This part ships as a single unit and is installed by hand or with standard assembly tools.

This spring plunger is used in light manufacturing, machine building, fixture design, and general mechanical assembly where a spring-loaded positioning or detent function is required. The 1/4-28 fine thread allows for precise axial positioning when threaded into a tapped hole. The nylon plunger nose suits applications where metal-to-metal contact is undesirable. The 3/16 inch projection provides the working stroke needed for most standard indexing and light retention tasks in both horizontal and vertical orientations.

Key Features

• 1/4-28 fine thread for precise depth adjustment in tapped holes
• Steel body provides durable, rigid housing for the spring mechanism
• Nylon nose delivers non-marring contact against workpiece surfaces
• 1 pound initial end force and 4 pound final end force for controlled spring load
• 3/16 inch plunger projection with a maximum plunger diameter of 0.118 inches
• No locking element — free-running thread for straightforward installation and adjustment

Compatibility

Designed as a standard threaded spring plunger replacement or new installation for any application requiring a 1/4-28 tapped hole with a 1 inch thread engagement depth and a non-marring nylon nose contact point.

Installation Notes

Installation is performed by threading the plunger body into a pre-tapped 1/4-28 hole using a hex key or appropriate driver on the body flats. Always de-energize or lock out any machine or fixture before servicing spring plungers in automated or powered assemblies. Do not exceed the rated end force by over-compressing the plunger nose, as this can damage the nylon tip or deform the spring. Confirm thread engagement depth against the 1 inch body length before finalizing installation torque.