S-93985A522 4-40 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Made from 416 Stainless Steel, this shoulder screw offers superior strength and resistance to rust, ensuring long-term reliability in harsh industrial environments.
• Precise Shoulder Fit for Accurate Alignment: With a shoulder diameter tolerance of -0.001" to 0" and length tolerance of 0" to 0.002", it provides exact positioning, reducing assembly errors and improving machinery performance.
• High Tensile Strength for Demanding Applications: Boasting a 120,000 psi tensile strength and Rockwell C26 hardness, it withstands heavy loads and repetitive stress without failure.
• Easy Installation with Hex Socket Drive: The 5/64" hex socket head allows for secure, tool-friendly tightening, minimizing slippage and speeding up assembly processes.
• Reliable Thread Performance: Featuring 4-40 UNC coarse threads with a Class 2A fit, it ensures smooth engagement and consistent fastening in various materials.
• Compliance with Environmental Standards: RoHS 3 and REACH compliant, this screw meets strict regulatory requirements, making it safe for use in global markets and sensitive applications.
• Versatile Right-Hand Thread Design: The right-hand coarse threading facilitates quick installation and removal, enhancing efficiency in maintenance and production cycles.

Professional Applications & Engineering Value

This 4-40 UNC shoulder screw is engineered to address common industrial challenges, such as misalignment and component wear. Crafted from 416 Stainless Steel, it provides excellent corrosion resistance and mechanical strength, ideal for applications in machinery, automotive assemblies, and precision instruments. The hex socket head design ensures easy access in confined spaces, while the precise shoulder fit with tight tolerances guarantees accurate pivoting and alignment, reducing downtime and maintenance costs. Its coarse thread and Class 2A fit enable reliable fastening in dynamic environments, making it a top choice for B2B buyers seeking durable, high-performance shoulder screws that enhance operational efficiency and product longevity.

Specification Summary & Compliance

This shoulder screw adheres to UNC thread standards with a Class 2A thread fit for consistent dimensional accuracy. The shoulder features precise tolerances: diameter of -0.001" to 0" and length of 0" to 0.002", ensuring reliable performance. It is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious industrial use without hazardous substances.