Gibraltar SWN10-4A-G Threaded Spring Plunger 1/4-20

Product Description

The GIBRALTAR SWN10-4A-G is a threaded spring plunger designed to provide controlled, spring-loaded contact force in mechanical assemblies, fixtures, and tooling applications. It features a 1/4-20 external thread with a 1 inch thread length and a steel body. The nylon nose delivers a 1 pound initial end force and 4 pound final end force, making it suitable for light-duty indexing, positioning, and detent functions. The 3/16 inch projection provides consistent nose travel. This is a standard-length plunger without a locking element, suited for applications where thread-locking retention is not required.

This spring plunger installs into threaded holes in metal or plastic assemblies where repeatable spring-loaded contact or soft detent action is needed. Typical applications include machine fixtures, jigs, positioning stops, and panel assemblies in industrial and trade settings. The nylon nose protects mating surfaces from marring, making it appropriate for use against finished or soft-material workpieces. It is commonly installed by machinists, maintenance technicians, and mechanical assemblers working in light industrial environments.

Key Features

• 1/4-20 thread size with 1 inch thread length for straightforward installation into standard tapped holes
• Steel body for durability in mechanical and industrial environments
• Nylon nose prevents marring or damage to mating surfaces
• 1 pound initial end force and 4 pound final end force for light-duty detent and positioning tasks
• 3/16 inch plunger projection provides consistent travel and contact
• No locking element - installs and adjusts using standard hex or slotted tools without thread-locking compounds required

Compatibility

Designed as a standard threaded spring plunger for use in any application requiring a 1/4-20 tapped hole and light-duty spring-loaded nose contact or detent function.

Installation Notes

Installation requires a properly tapped 1/4-20 through or blind hole. Use appropriate hand tools to thread the plunger in to the desired depth, ensuring the nose can travel freely without obstruction. Since this plunger has no locking element, apply thread-locking compound if retention against vibration is needed, following the compound manufacturer's instructions. Avoid overtightening, which can distort the body and restrict plunger movement.