Gibraltar SWN10-5S-G Threaded Spring Plunger 5/16-18

Product Description

The GIBRALTAR SWN10-5S-G is a stubby threaded spring plunger designed for positioning, locating, and light-duty indexing applications in mechanical assemblies. It features a 5/16-18 threaded body machined from steel, with a steel nose that delivers consistent spring-loaded contact force. The thread length measures 0.562 inches, the maximum plunger diameter is 0.135 inches, and the plunger projection is 0.084 inches. Initial end force is 3.7 pounds and final end force is 15.5 pounds, making it suitable for applications requiring a defined resistance range without a locking element. Machinists, maintenance technicians, and mechanical assemblers are the typical installers.

This spring plunger is used in jigs, fixtures, tooling plates, machine components, and light mechanical assemblies where repeatable detent or positioning action is needed. The stubby plunger length type suits installations with limited axial clearance. It threads directly into a tapped hole sized for 5/16-18 threads. The absence of a locking element means it is adjustable and removable without permanent deformation of the installation bore, making it practical for assemblies that require periodic maintenance or reconfiguration.

Key Features

• 5/16-18 thread size with 0.562 inches thread length for standard tapped-hole installation
• Steel body and steel nose for durability in industrial and mechanical service
• Stubby plunger length type for use in space-constrained assemblies
• 3.7 pounds initial end force and 15.5 pounds final end force for defined spring-load range
• No locking element — fully adjustable and repositionable after installation
• 0.084 inches plunger projection and 0.135 inches maximum plunger diameter

Compatibility

Designed as an OEM-style replacement or direct-fit component for mechanical assemblies, jigs, and fixtures requiring a 5/16-18 threaded spring plunger with a stubby body profile.

Installation Notes

Installation requires a correctly tapped 5/16-18 through or blind hole in the mating component. De-energize or lock out any machine before servicing assemblies that contain spring plungers. Use an appropriate hex key or slotted driver sized to the plunger head to thread in and seat the part without cross-threading. Do not exceed the rated final end force by over-compressing the plunger during assembly fitment checks.