Jergens 30522 Threaded Spring Plunger 8-32 Steel Locking

Product Description

The JERGENS 30522 is a threaded spring plunger designed for precise, repeatable positioning and indexing applications in industrial and mechanical assemblies. The plunger features an 8-32 thread size with a 5/8-inch thread length and a maximum plunger diameter of 0.07 inches, delivering a 3/32-inch projection when engaged. Initial end force is 2.7 pounds, with a final end force of 7.3 pounds. The steel body provides durability under repeated cycling, while the integrated locking element secures the plunger's adjustment position once set. A black finish is applied to the body for corrosion resistance and identification.

This spring plunger is used in jigs, fixtures, tooling plates, and light machinery where a spring-loaded ball or nose must register into a detent or locating feature. The Delrin nose reduces wear on mating surfaces and minimizes marring on finished or soft workpieces. The 5/64-inch hex drive allows installation and removal with standard hex keys in confined spaces. Standard-length body at 5/8 inches suits common tooling block depths and off-the-shelf fixture designs.

Key Features

• 8-32 threaded body with 5/8-inch thread length for direct installation into tapped holes
• Locking element holds plunger adjustment securely after installation
• Delrin nose resists wear and protects mating or finished surfaces
• 2.7 pounds initial end force and 7.3 pounds final end force for positive detent engagement
• Steel body with black finish for durability and corrosion resistance
• 5/64-inch hex drive for installation in tight clearance areas

Compatibility

Designed as an OEM-style replacement or direct installation component for industrial jigs, fixtures, tooling plates, and mechanical assemblies requiring an 8-32 threaded spring plunger with a locking element.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 5/64-inch hex key. The receiving tapped hole should be clean and free of debris before threading in the plunger. Use the locking element to fix the plunger position once the desired spring engagement is confirmed. Avoid over-torquing, which can damage the thread or locking mechanism.