Jergens 30924 Threaded Spring Plunger 1/4-20 Steel Locking

Product Description

The JERGENS 30924 is a threaded spring plunger designed for indexing, positioning, and light-duty locking applications in tooling, fixtures, and mechanical assemblies. The plunger body is steel with a Delrin nose and a black finish, providing corrosion resistance and reduced friction at the contact point. It features a 1/4-20 thread with a 1 inch thread length and a plunger projection of 3/16 inches, with a maximum plunger diameter of 0.119 inches. A built-in locking element prevents the plunger from backing out under vibration, making it suitable for demanding industrial environments. Initial end force is 1 pound and final end force is 4 pounds.

This plunger is suited for use in machine tool fixtures, jigs, assembly equipment, and workholding devices where repeatable positioning or light detent action is required. It installs into any tapped 1/4-20 hole and is appropriate for both production tooling and maintenance applications. The standard-length body and locking element design make it a common choice for OEM equipment builders and tool room technicians working with steel or aluminum fixtures.

Key Features

• 1/4-20 thread with 1 inch thread length for standard tapped-hole installation
• Locking element prevents back-out under vibration
• Delrin nose reduces friction and protects mating surfaces
• Steel body with black finish for durability and corrosion resistance
• 1 pound initial end force and 4 pound final end force for light-duty indexing
• 3/16 inch plunger projection with 0.119 inch maximum plunger diameter

Compatibility

Designed as a standard-style replacement or new-install threaded spring plunger for any application requiring a 1/4-20 tapped hole and a locking-element plunger with standard body length.

Installation Notes

Installation is performed by threading the plunger into a pre-tapped 1/4-20 hole using a 1/8 inch hex key. De-energize or lock out any powered equipment before servicing fixtures or assemblies that contain this component. Do not overtighten, as doing so may damage the locking element or compress the internal spring beyond its operating range. Follow applicable machine safety and tooling standards for your facility.