Vlier SSSD61 Threaded Spring Plunger 1/2-13 Stainless Steel

Product Description

The VLIER SSSD61 is a standard threaded spring plunger designed for indexing, positioning, and light-duty locking applications in mechanical assemblies. It features a 1/2-13 thread with a 1-1/4 inch thread length and a 1-1/4 inch body length. The plunger nose measures between 0.246 and 0.248 inches in diameter with a 1/4 inch projection. Initial end force is 2.7 pounds and final end force is 9.3 pounds, making it suitable for applications requiring consistent, repeatable spring-loaded engagement. The stainless steel body provides corrosion resistance in demanding environments, while the Delrin nose reduces wear on mating surfaces. Machinists, maintenance technicians, and mechanical assemblers install this type of plunger.

The SSSD61 is used in jigs, fixtures, tooling plates, and machine assemblies where a spring-loaded ball or nose plunger is needed to hold a component in a defined position without a permanent lock. It is suited for both light industrial and precision mechanical applications where smooth, repeatable detent action is required. The standard plunger length type makes it a straightforward drop-in solution for common threaded plunger locations in existing assemblies.

Key Features

• 1/2-13 thread size with 1-1/4 inch thread length for secure installation in standard tapped holes
• Stainless steel body for corrosion resistance in wet or harsh environments
• Delrin nose material reduces wear on mating contact surfaces
• 2.7 lb initial end force and 9.3 lb final end force for controlled detent engagement
• 0.246 to 0.248 inch plunger diameter with 1/4 inch projection
• No locking element - free-spinning for easy installation and removal

Compatibility

Designed as an OEM-style replacement or direct-fit spring plunger for mechanical assemblies using a 1/2-13 threaded plunger bore with standard 1-1/4 inch thread depth.

Installation Notes

Installation is performed by machining or tooling technicians using a standard hex wrench or spanner tool appropriate for the body size. Always ensure the mating tapped hole is clean and free of debris before threading in the plunger. Do not overtighten, as this can distort the body or restrict plunger travel. Confirm plunger projection and spring force are appropriate for the detent load of the specific assembly before final installation.