Vlier SSSD51P Threaded Spring Plunger 8-32 Stainless Steel

Product Description

The VLIER SSSD51P is a threaded spring plunger designed for indexing, positioning, and light-duty detent applications in industrial assemblies. It features an 8-32 thread size with a 5/8 inch thread length and a stainless steel body, making it suitable for environments where corrosion resistance is a priority. The plunger nose is machined from Delrin, which provides smooth, low-friction contact against mating surfaces. Initial end force is 0.70 pounds and final end force is 2.30 pounds, giving engineers and technicians a predictable, repeatable force profile. A locking element is incorporated into the body to secure the plunger in position after installation and prevent backing out under vibration or repeated actuation.

This spring plunger is used in machine tool fixtures, jigs, assembly equipment, and precision mechanical devices where controlled detent force or part registration is required. The compact form factor and standard 8-32 thread make it straightforward to install in tapped holes across a wide range of aluminum, steel, or plastic housings. It is well suited for OEM assembly applications and field service work in industrial maintenance settings where small-format plungers are called for.

Key Features

• Stainless steel body provides corrosion resistance for demanding or wet environments
• Delrin nose material delivers smooth, low-wear contact on mating surfaces
• Locking element prevents rotation or backing out after installation
• Initial end force of 0.70 pounds and final end force of 2.30 pounds for consistent detent performance
• Standard 8-32 thread installs directly into common tapped holes without special tooling
• 3/32 inch plunger projection suits tight-clearance assemblies

Compatibility

Designed as a standard-thread spring plunger for use in tapped 8-32 holes in industrial fixtures, jigs, and mechanical assemblies requiring a stainless steel body with a locking element.

Installation Notes

Installation is typically performed by a machinist or maintenance technician using a hex key or screwdriver suited to the drive type on the plunger body. The mating hole must be tapped to 8-32 before installation. Engage the locking element fully to prevent the plunger from loosening under vibration. Avoid over-torquing the body, as this can damage the Delrin nose or distort the spring mechanism.