Vlier SC335 Swivel Pad Leveling Screw 5/16-18 2in

Product Description

The VLIER SC335 is a swivel pad leveling screw designed for precise positioning and workholding applications in industrial and mechanical assemblies. Built from alloy steel with a black oxide finish, this screw provides reliable point contact through a 0.25-inch steel swivel pad that pivots up to 7.5 degrees to conform to uneven or angled surfaces. The overall length is 2 inches with a thread length of 1-51/64 inches, and it drives with a 5/32-inch hex key. Machinists, toolmakers, and maintenance technicians install this type of fastener in fixtures, jigs, vises, and machine bases where controlled leveling or clamping pressure is required.

The SC335 is suited for light-duty to medium-duty fixturing in machine shops, manufacturing cells, and assembly operations. Its 5/16-18 UNC thread is a common size found in standard fixture plates and tooling blocks. The swivel pad construction compensates for surface irregularities without requiring the screw to be perfectly perpendicular to the workpiece, making it practical for angled or slightly irregular contact surfaces. This part is typically specified by tooling engineers and installed by machinists or skilled maintenance personnel.

Key Features

• Alloy steel construction with black oxide finish for corrosion resistance in shop environments
• 7.5-degree swivel angle allows the pad to seat flush against non-perpendicular surfaces
• 0.25-inch diameter steel swivel pad distributes clamping load at the contact point
• 5/16-18 UNC thread is compatible with standard fixture plate tapped holes
• 5/32-inch hex key drive for installation with standard Allen wrenches
• Manufactured to ISO 9001 quality standards

Compatibility

Designed as an OEM-style replacement or direct-fit component for fixtures, jigs, and tooling assemblies that use 5/16-18 UNC threaded leveling or clamping screws with swivel pad ends.

Installation Notes

Install using a 5/32-inch hex key; ensure the mating tapped hole is clean and free of debris before threading in. Do not exceed the rated swivel angle of 7.5 degrees, as overloading the pad pivot can cause premature wear or pad separation. For fixturing applications, secure the screw to the desired position before applying clamping load to the workpiece. Follow applicable shop safety procedures and lock out any powered equipment before servicing fixtures in place.