Vlier SC329 Swivel Pad Screw 1/4-20 Alloy Steel

Product Description

The VLIER SC329 is a swivel pad screw designed for use in workholding, fixturing, and clamping applications. Built from alloy steel with a black oxide finish, it provides reliable point contact while the swivel pad compensates for angled or uneven workpiece surfaces. The 1/4-20 UNC thread and 1.5-inch overall length make it a compact, direct-fit component for standard clamping screws and toe clamps. The pad measures 0.185 inches in diameter and swivels up to 7.5 degrees to maintain consistent contact pressure. A 1/8-inch hex key drives the fastener. This part is installed by machinists, toolmakers, and fixture builders working in precision manufacturing environments.

The SC329 suits residential and commercial machine shop fixtures, jigs, and vises where a swivel contact point is needed to apply clamping force against irregular or chamfered surfaces. It is a drop-in replacement for standard swivel pad screws in that thread class. The 1-11/32-inch thread engagement length provides sufficient grip depth in most standard clamping blocks. The black oxide finish offers mild corrosion resistance appropriate for indoor dry shop conditions.

Key Features

• 7.5-degree swivel angle accommodates angled and uneven workpiece surfaces
• Alloy steel construction with black oxide finish for durability and corrosion resistance
• 1/4-20 UNC thread for compatibility with standard clamping hardware
• 0.185-inch pad diameter for focused point contact
• 1/8-inch hex key drive for easy installation and adjustment
• Manufactured to ISO 9001 quality standards

Compatibility

Designed as a direct-style replacement for 1/4-20 UNC swivel pad screws used in standard workholding, fixturing, and clamping assemblies.

Installation Notes

Installation is performed by machinists or toolmakers using a 1/8-inch hex key. Clamp and fixture assemblies should be fully released and the machine powered down before replacing clamping components. Do not exceed the rated swivel angle when seating the pad against a workpiece, as overloading the swivel joint can cause premature wear. Verify thread engagement depth meets the requirements of the host clamping block before applying full clamping force.