Vlier SSS51 Threaded Spring Plunger 8-32 Stainless Steel

Product Description

The VLIER SSS51 is a threaded spring plunger designed for indexing, positioning, and light-duty holding applications in mechanical assemblies. It features an 8-32 thread with a 5/8 inch thread length and a stainless steel body and nose. The plunger delivers 0.70 lb of initial end force and 2.30 lb of final end force, making it suitable for low-force spring-loaded positioning tasks. With a minimum plunger diameter of 0.069 inches and a maximum of 0.070 inches, this is a precision-dimensioned fastener component. Machinists, tool and die technicians, and mechanical assembly professionals install this type of hardware in fixtures, jigs, and production equipment.

The SSS51 is intended for use in threaded holes tapped to 8-32 specifications. Common applications include tooling fixtures, machine components, electronic enclosures, and any assembly requiring repeatable spring-loaded plunger action. The standard plunger length type and 3/32 inch projection make it a straightforward drop-in solution for existing 8-32 tapped locations. It carries no locking element, so it threads in and out freely for repositioning or replacement without special tools.

Key Features

• 8-32 thread size with 5/8 inch thread and body length for consistent seating depth
• Stainless steel body and nose for corrosion resistance in demanding environments
• 0.70 lb initial end force and 2.30 lb final end force for light-duty positioning
• 3/32 inch plunger projection for controlled spring-loaded contact
• Plunger diameter range of 0.069 to 0.070 inches for precision fitment
• No locking element for easy installation and removal by hand or standard hex tool

Compatibility

Designed as a standard-style threaded spring plunger for use in any assembly or fixture with an 8-32 tapped hole requiring a low-force spring plunger with a 5/8 inch thread length.

Installation Notes

Installation is typically performed by mechanical assembly technicians using a standard hex key or slotted driver matched to the plunger body. Ensure the mating tapped hole is clean and free of debris before threading in the plunger. Do not overtighten, as excessive torque can damage the spring mechanism or distort the stainless steel body. Verify plunger projection and spring force are appropriate for the holding or indexing requirement before final assembly.