Jergens 27171 Threaded Spring Plunger M5 X 0.8 Steel

Product Description

The JERGENS 27171 is a short-body threaded spring plunger designed for light-duty indexing, positioning, and detent applications in precision fixtures, jigs, and assemblies. The plunger features an M5 x 0.8 thread with a 14.5 mm thread length and a 2.36 mm maximum plunger diameter. A 3 mm projection provides reliable engagement force with an initial end force of 0.14 kg and a final end force of 1.36 kg. The steel body offers durability in demanding shop environments, and the Delrin nose reduces wear on mating surfaces. A locking element is included to secure the plunger against rotation or backing out once installed.

This spring plunger is suited for use in tooling plates, workholding fixtures, machine tool components, and industrial assemblies where repeatable positioning or controlled detent action is required. It is installed by machinists, toolmakers, and fixture builders in both light manufacturing and precision machining environments. The compact M5 thread size makes it appropriate for smaller fixtures or applications where space is limited.

Key Features

• M5 x 0.8 thread with 14.5 mm thread length for standard metric tap compatibility
• Short plunger body at 14.5 mm overall length suits compact fixture designs
• 2.36 mm maximum plunger diameter with 3 mm nose projection
• Initial end force of 0.14 kg and final end force of 1.36 kg for light detent engagement
• Delrin nose material minimizes wear on contact surfaces
• Locking element prevents loosening under vibration or repeated cycling
• Black finish steel body resists corrosion in typical shop conditions

Compatibility

Designed as an OEM-style replacement or direct installation component for metric-threaded tooling fixtures and assemblies requiring an M5 x 0.8 short spring plunger with a locking element.

Installation Notes

Install using standard metric hand tools into a properly tapped M5 x 0.8 through or blind hole. Ensure the mating thread is clean and free of chips before installation. Engage the locking element per the manufacturer guidelines to prevent backing out under load or vibration. Power down or de-energize any associated equipment before servicing fixtures or tooling assemblies containing this plunger.