Vlier S63N Threaded Spring Plunger 5/8-11 Steel Body

Product Description

The VLIER S63N is a threaded spring plunger designed for indexing, positioning, and light-duty locking applications in industrial assemblies. The plunger features a 5/8-11 thread with a 1-1/2 inch thread length and a standard-length steel body. The nose projects 5/16 inch and measures between 0.308 and 0.310 inches in diameter. Initial end force is 3.5 pounds; final end force is 10.5 pounds. A locking element is integrated into the body to prevent the plunger from backing out under vibration. Machinists, tool and die technicians, and mechanical assembly professionals install these in jigs, fixtures, and machine tool components.

The S63N suits applications where a spring-loaded plunger must engage a detent or locating hole to hold a workpiece or moving assembly in a repeatable position. The locking element feature makes it suitable for environments with continuous vibration or cyclic loading where a non-locking plunger would walk out over time. Typical installations include fixture plates, indexing tables, sliding carriages, and tooling bodies in both light manufacturing and precision machining environments.

Key Features

• 5/8-11 thread size with 1-1/2 inch thread length for secure mounting in standard tapped holes
• Steel nose and steel body for durability in industrial service
• 3.5 pound initial end force and 10.5 pound final end force for consistent detent engagement
• Integrated locking element prevents unintended backing out under vibration
• Plunger diameter range of 0.308 to 0.310 inches for close-tolerance detent engagement
• 5/16 inch plunger projection for reliable engagement depth in standard detent applications

Compatibility

Designed as a direct-fit threaded spring plunger for tapped holes requiring a 5/8-11 thread. Suitable for standard fixture, jig, and machine tool applications calling for a steel-body plunger with locking element at this thread size.

Installation Notes

Installation is performed by threading the S63N into a pre-tapped 5/8-11 hole using the appropriate hex key or spanner tool on the body flats. Ensure the mating hole or cavity is free of chips and debris before installation. Torque the plunger to the tool or fixture manufacturer's specification for this thread class. Disengage any mechanical load or moving assembly before servicing the plunger.