Gibraltar SWPN-6-PT-G Threaded Spring Plunger 3/8-16

Product Description

The GIBRALTAR SWPN-6-PT-G is a standard threaded spring plunger designed for indexing, positioning, and locating applications in mechanical assemblies. The body is machined from steel and accepts a 3/8-16 thread with a thread length of 1-1/8 inches. The phenolic nose plunger projects 3/16 inches and delivers an initial end force of 5.5 pounds and a final end force of 14.5 pounds, providing consistent spring-loaded retention. A locking element is included to secure the plunger in the threaded bore once installed. Machinists, toolmakers, and maintenance technicians install this type of hardware in fixtures, jigs, and light industrial equipment.

This spring plunger is suited for use in drill fixtures, machine tool assemblies, workholding devices, and any application requiring repeatable spring-loaded positioning. The phenolic nose reduces marring on soft workpiece surfaces, making it appropriate for fixture work where contact marking is a concern. It is sold individually and fits standard 3/8-16 threaded holes in steel or aluminum bodies.

Key Features

• Steel body construction for durability in industrial environments
• Phenolic nose minimizes surface marring on contact
• 3/8-16 thread size with 1-1/8 inches thread length for secure installation
• Initial end force of 5.5 pounds and final end force of 14.5 pounds
• 3/16 inches plunger projection provides positive spring-loaded engagement
• Integrated locking element locks plunger position in the threaded bore

Compatibility

Designed as a direct-fit replacement or new-installation spring plunger for any assembly or fixture that uses a standard 3/8-16 threaded bore requiring a spring-loaded plunger with a 1-1/8 inches thread length.

Installation Notes

Installation is performed by threading the plunger body into a tapped 3/8-16 hole using an appropriate hex key or spanner tool on the body flats. Torque the body until the locking element engages the threads to prevent back-out under vibration. Ensure the bore is clean and free of chips or debris before installation. No special tools beyond standard hand tools are required for typical fixture applications.