Gibraltar 57086G Threaded Spring Plunger 8-32 Steel

Product Description

The GIBRALTAR 57086G is a threaded spring plunger designed to provide controlled, spring-loaded positioning and locking force in mechanical assemblies. Built with a steel body and a Delrin nose, this plunger uses an 8-32 thread with a 5/8-inch thread length and a maximum plunger diameter of 0.07 inches. It delivers an initial end force of 2.7 pounds and a final end force of 7.3 pounds, making it suitable for indexing, positioning, and detent applications. The locking element feature prevents the plunger from rotating once installed. Installed by machinists, maintenance technicians, and mechanical assemblers, this part is a standard hardware component in precision equipment and industrial machinery.

The GIBRALTAR 57086G is suited for use in fixtures, jigs, machine tool components, and other assemblies requiring repeatable spring-loaded detent action. Its compact form factor and standard 8-32 thread make it a practical choice for tight-clearance applications in both light industrial and commercial equipment environments. The black finish provides basic corrosion resistance for general indoor use. The 3/32-inch projection and 5/8-inch body length support applications where minimal protrusion is required.

Key Features

• 8-32 threaded body with 5/8-inch thread length for standard installation into tapped holes
• Steel body construction for durability in mechanical assemblies
• Delrin nose reduces wear on mating surfaces during repeated contact
• Locking element prevents plunger rotation after installation
• 2.7-pound initial end force and 7.3-pound final end force for reliable detent action
• Black finish for general-purpose indoor applications

Compatibility

Designed as a standard 8-32 threaded spring plunger for use in mechanical assemblies, fixtures, and industrial equipment requiring spring-loaded positioning or detent retention.

Installation Notes

Installation requires a tapped 8-32 hole to the appropriate depth for the 5/8-inch thread length. Use a 1/16-inch hex key to seat and adjust the plunger. Ensure the mating surface is clean and free of debris before threading in the plunger. The locking element should be engaged once the plunger is positioned correctly to prevent loosening under vibration.