Jergens 30703 Threaded Spring Plunger 10-32 Steel Body

Product Description

The JERGENS 30703 is a short threaded spring plunger designed for indexing, positioning, and light-duty detent applications in mechanical assemblies. It features a 10-32 threaded body machined from steel with a black finish, and a Delrin nose that provides smooth, low-friction contact against mating surfaces. The plunger diameter measures 0.093 inches, with a 1/8 inch projection and a 9/16 inch thread length. Initial end force is 0.3 pounds, rising to a final end force of 3 pounds at full compression. A locking element is included to secure the plunger in the threaded bore after installation.

This spring plunger is suited for use in fixtures, jigs, machine tool components, and light assembly equipment where repeatable positioning or controlled resistance is required. It installs into a standard 10-32 threaded hole, making it a straightforward drop-in component for new builds or replacement in existing mechanical setups. Machinists, tool and die makers, and maintenance technicians working on production fixtures and precision assemblies are the typical end users.

Key Features

• Short plunger length type with 9/16 inch body length for space-constrained applications
• Steel body with black finish for corrosion resistance in light-duty environments
• Delrin nose material for smooth, low-wear contact with mating surfaces
• Locking element included to prevent back-out after installation
• 0.3 pounds initial end force and 3 pounds final end force for controlled detent action
• Standard 10-32 thread for easy installation in common tapped holes

Compatibility

Designed as a direct-fit replacement or new-installation spring plunger for any mechanical assembly using a standard 10-32 threaded bore with short-body plunger clearance requirements.

Installation Notes

Installation requires a properly tapped 10-32 threaded hole in the mating component. Use the locking element to fix the plunger position in the bore once the desired projection and force are set. A hex key or appropriate driver for the plunger drive feature should be used to avoid damaging the body or nose during installation. Do not overtighten, as this can deform the locking element or alter the calibrated end force.