Vlier SSLF500 Locking Knob Handle Plunger 1/2-13

Product Description

The VLIER SSLF500 is a locking knob handle plunger designed for precision indexing and positioning applications in industrial and mechanical assemblies. Built from stainless steel, this plunger features a knurled knob for secure manual operation and a locking plunger mechanism to hold position under load. The 1/2-13 threaded body installs into standard tapped holes with a thread length of 0.65 inches and a length under head of 0.9 inches. End force ranges from 0.5 lb initial to 4 lb final, making it suitable for light-duty positioning tasks that require repeatable, controlled engagement.

This plunger is used in fixtures, jigs, machine tool components, and panel assemblies where a hand-adjustable locking mechanism is required. It is a common hardware element in manufacturing, automation, and equipment maintenance environments. Installation is straightforward for millwrights, machine builders, and maintenance technicians working on mechanical assemblies requiring indexed or spring-loaded stop points.

Key Features

• Locking plunger type holds position without external fastening
• Knurled knob style provides positive grip for tool-free adjustment
• Stainless steel construction resists corrosion in wash-down or humid environments
• End force range of 0.5 lb initial to 4 lb final suits light-duty indexing applications
• Plunger projection of 0.25 inches with a maximum plunger diameter of 0.249 inches
• 1/2-13 thread size fits standard tapped mounting holes

Compatibility

Designed as an OEM-style replacement or direct-fit component for mechanical assemblies requiring a 1/2-13 threaded locking knob plunger with a knurled head and stainless steel construction.

Installation Notes

Install into a properly tapped 1/2-13 threaded hole using hand tightening or a suitable wrench on the head flat if provided. Ensure the mating bore or receiver is clean and free of debris before inserting the plunger. Verify plunger projection and end force requirements match the application before final installation. No special tools or certifications are typically required for standard mechanical assembly work.