Vlier SSC334 Swivel Pad Leveling Screw 5/16-18

Product Description

The VLIER SSC334 is a swivel pad leveling screw designed for precision positioning and workholding applications. Built from stainless steel throughout, it features a pivoting pad that adjusts to uneven surfaces, maintaining consistent contact and load distribution without damaging the workpiece. The screw uses a 5/16-18 UNC thread and measures 1.5 inches overall length. The pad diameter is 0.25 inches and swivels up to 7.5 degrees to accommodate minor surface irregularities. A 5/32-inch hex key drives installation and adjustment. This component is commonly installed by machinists, toolmakers, and maintenance technicians working with fixtures, machine bases, and precision assemblies.

The SSC334 is suited for use in industrial fixturing, machine tool setups, and equipment leveling applications where a rigid, non-swivel foot would cause point loading or surface marring. The stainless steel construction makes it appropriate for environments requiring corrosion resistance, including washdown areas and food-adjacent machinery. The UNC thread standard ensures compatibility with standard inch-series tapped holes. Thread engagement length is approximately 1-19/64 inches, providing solid purchase in properly tapped fixtures.

Key Features

• Swivel pad adjusts up to 7.5 degrees to conform to non-flat contact surfaces
• Full stainless steel construction on both pad and body for corrosion resistance
• 5/16-18 UNC thread for compatibility with standard inch-series tapped holes
• 0.25-inch pad diameter provides controlled contact area
• Driven with a 5/32-inch hex key for easy adjustment in tight clearances
• Manufactured under ISO 9001 quality management standards

Compatibility

Designed as a standard inch-series swivel pad leveling screw for use in industrial fixtures, jigs, machine bases, and tooling plates with 5/16-18 UNC tapped holes.

Installation Notes

Installation is performed by threading the SSC334 into a pre-tapped 5/16-18 UNC hole using a 5/32-inch hex key. Ensure the mating hole is clean and threads are in good condition before installation. Do not overtighten, as excessive torque can restrict the swivel action of the pad or damage the contact surface. Verify that the swivel pad seats flush against the contact surface before locking the screw in final position.