Gibraltar 57184G Threaded Spring Plunger 1/8 Thread Steel

Product Description

The GIBRALTAR 57184G is a threaded spring plunger designed for positioning, indexing, and light-duty locking applications in mechanical assemblies. The steel body and steel nose provide durability in industrial and commercial environments. With a 1/8 thread size and a thread length of 2-13/32 inches, this plunger installs directly into a tapped hole. It delivers an initial end force of 10 pounds and a final end force of 25 pounds, making it suitable for controlled-resistance spring-loaded engagement. A locking element is incorporated to secure the plunger in place after installation. Machinists, toolmakers, and maintenance technicians are the typical installers.

This spring plunger is used in jigs, fixtures, machine tools, and general industrial assemblies where a spring-loaded ball or nose must engage a detent or provide consistent stop-and-hold resistance. The 0.499-inch maximum plunger diameter and 1/2-inch projection allow for predictable engagement depth in standard plunger bores. The black finish provides basic corrosion resistance for shop and light-industrial environments. Standard thread size makes this a straightforward drop-in component for new builds or replacement applications in existing assemblies.

Key Features

• 1/8 thread size with 2-13/32 inch thread length for direct installation in tapped holes
• Steel body and steel nose construction for industrial-grade durability
• 10-pound initial end force and 25-pound final end force for controlled spring engagement
• 1/2-inch plunger projection with 0.499-inch maximum plunger diameter
• Integrated locking element secures plunger position after installation
• Black finish for basic corrosion resistance

Compatibility

Designed as an OEM-style replacement or new-build component for jigs, fixtures, and mechanical assemblies requiring a standard 1/8 threaded spring plunger with a locking element.

Installation Notes

Installation is performed by machinists or maintenance technicians using a 3/8-inch hex wrench to thread the plunger into a pre-tapped hole. Ensure the receiving hole is clean and properly threaded to the correct depth before installation. Do not overtighten, as this can damage the locking element or distort the thread. Confirm plunger projection clearance before final assembly to avoid interference with mating components.