S-94128A179 3/8"-16 Shoulder Screws

Key Features & Benefits at a Glance

• Superior alignment precision with a precisely machined 1/2" shoulder diameter and tight tolerance for reduced assembly play and improved component positioning.
• Exceptional thread reliability due to the Class 3A thread fit, ensuring secure fastening and vibration resistance in demanding applications.
• High-strength durability from alloy steel construction with Rockwell C32 hardness, providing excellent resistance to wear and deformation under load.
• Simplified installation and maintenance with a headless, slotted drive design that allows for easy access in confined spaces and straightforward adjustment.
• Broad industrial compatibility with 3/8"-16 UNC coarse threads, offering quick assembly and robust holding power in various machinery.
• Environmental and regulatory safety through compliance with RoHS 3 and REACH standards, ensuring safe use in global markets.
• Optimized for heavy-duty use with a right-hand thread direction and coarse thread spacing, enabling efficient fastening in high-stress environments.

Professional Applications & Engineering Value

This 3/8"-16 UNC shoulder screw is engineered to address common industrial challenges such as misalignment and component wear in machinery assemblies. Made from high-strength alloy steel and heat-treated to Rockwell C32 hardness, it provides reliable performance in applications like rotating shafts, pivots, and guides, where precise shoulder fit is critical. The headless slotted design allows for compact installations, reducing space requirements while maintaining easy adjustability. By combining a Class 3A thread fit with a coarse UNC thread, it ensures quick, secure fastening in environments prone to vibration, making it ideal for automotive, aerospace, and heavy equipment sectors that demand durability and exact tolerances.

Specification Summary & Compliance

This shoulder screw features a 3/8"-16 UNC coarse thread with a Class 3A fit for high precision, a shoulder diameter of 1/2" with tight tolerances, and a shoulder length of 1" to ensure accurate alignment. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and adherence to international standards for industrial fasteners.