Vlier NSSC329 Swivel Pad Leveling Screw 1/4-20 Stainless

Product Description

The VLIER NSSC329 is a swivel pad leveling screw designed for precision positioning and workholding applications. Built with a stainless steel body and a Delrin swivel pad, it provides firm, non-marring contact on workpiece surfaces. The 1/4-20 UNC thread runs 1-11/32 inches in length with a 1.5-inch overall length. A 7.5-degree swivel angle allows the pad to self-align to angled or irregular surfaces, reducing point loading. The 0.185-inch pad diameter suits compact fixtures and tooling setups. Drive is via a 1/8-inch hex key. This type of fastener is commonly installed by machinists, toolmakers, and mechanical assembly technicians.

The NSSC329 is suited for use in machine tooling, fixtures, jigs, and precision assemblies where controlled surface contact and minor angular adjustment are required. The stainless steel construction makes it appropriate for environments where corrosion resistance is a factor, such as food processing equipment, washdown areas, or humid industrial settings. The Delrin pad protects finished or sensitive surfaces from damage during clamping or leveling.

Key Features

• Stainless steel body with black oxide finish for corrosion resistance
• Delrin swivel pad for non-marring, self-aligning contact
• 7.5-degree swivel angle accommodates angled and uneven surfaces
• 1/4-20 UNC thread for standard tooling and fixture compatibility
• 0.185-inch pad diameter suited for compact fixture applications
• 1/8-inch hex key drive for precise torque application in tight spaces

Compatibility

Designed as an OEM-style replacement or direct-install swivel pad leveling screw for fixtures, jigs, and tooling assemblies using 1/4-20 UNC threaded components.

Installation Notes

Installation is performed by machinists or mechanical assembly technicians using a 1/8-inch hex key. Ensure the mating threaded hole or nut is clean and free of debris before installation. Do not overtighten, as the Delrin swivel pad can deform under excessive clamp load. Verify swivel pad seating and surface contact alignment before locking the assembly into final position.