Gibraltar SWN10-4B-G Threaded Ball Plunger 1/4-20

Product Description

The GIBRALTAR SWN10-4B-G is a threaded ball plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. The plunger features a 1/4-20 threaded steel body with a zinc finish and a nylon ball that provides smooth, low-friction contact. The ball diameter is 0.125 inches with a maximum ball reach of 0.035 inches and a body length of 0.531 inches. Initial end force is 3 pounds and final end force is 7 pounds, making this plunger suitable for applications requiring controlled, repeatable spring tension. Machinists, millwrights, and maintenance technicians install this type of hardware in fixtures, jigs, slides, and tool holders.

This ball plunger is used in light industrial and manufacturing environments where a spring-loaded detent or positioning element is needed. It threads directly into a tapped 1/4-20 hole, requiring no special tooling beyond a hex wrench or spanner. Typical applications include drawer slides, fixture plates, machine tool carriages, and panel assemblies where the nylon ball provides a non-marring contact point against mating surfaces.

Key Features

• 1/4-20 threaded body for direct installation into standard tapped holes
• Nylon ball provides non-marring, low-friction contact
• Steel body with zinc finish for corrosion resistance in light-duty environments
• 3 pound initial end force and 7 pound final end force for controlled detent action
• Compact 0.531 inch body length suits space-constrained assemblies
• No locking element — straightforward installation and adjustment

Compatibility

Designed as a standard 1/4-20 threaded ball plunger for use in any fixture, jig, or mechanical assembly with a compatible tapped hole pattern.

Installation Notes

Installation requires a pre-tapped 1/4-20 hole in the mating component. Thread the plunger in by hand and tighten with the appropriate hex key or spanner; do not overtighten, as the steel body can be damaged if forced beyond the designed seating depth. Ensure the mating surface is clean and free of debris before assembly to avoid ball contamination that could affect spring force consistency. No special trade licensing is required for hardware installation of this type.