S-92981A771 M2 ASTM A108 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear, extending service life in demanding industrial environments.
• Superior Tensile Strength for High-Stress Applications: 140,000 psi tensile strength ensures the screw can withstand significant mechanical loads without failure.
• Precision Shoulder for Accurate Alignment: The 10mm shoulder length with tight tolerances guarantees exact component positioning, reducing assembly errors and improving machine performance.
• High Hardness for Long-Term Reliability: Rockwell C32 hardness offers excellent resistance to deformation and wear, maintaining dimensional stability over time.
• Secure and Efficient Hex Drive Installation: 1.5 mm hex drive with a knurled socket head allows for high-torque application and prevents tool slippage, speeding up assembly.
• Coarse Thread for Quick and Robust Fastening: M2x0.4 coarse thread design enables faster installation and provides strong holding power in various materials.
• Compliance with International Standards for Quality Assurance: Meets ASTM A108, RoHS 3, and REACH regulations, ensuring material consistency and environmental safety in global supply chains.

Professional Applications & Engineering Value

This M2x0.4 shoulder screw is engineered to address critical challenges in precision assemblies, such as misalignment and component wear. The alloy steel construction, combined with a black oxide finish, offers exceptional strength and corrosion resistance, making it ideal for automotive, electronics, and machinery applications where reliability is paramount. The precisely machined 10mm shoulder with minimal tolerances ensures accurate pivot points and bearing surfaces, reducing vibration and extending the life of moving parts. Its hex drive and knurled head facilitate easy installation in confined spaces, while the Class 5g6g thread fit guarantees secure fastening without loosening. By integrating these features, this screw minimizes downtime and enhances overall assembly integrity in B2B industrial settings.

Specification Summary & Compliance

This shoulder screw adheres to precise dimensional standards, including a shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm, ensuring consistent performance in metric applications. The thread fit conforms to Class 5g6g for reliable engagement, and manufacturing follows ASTM A108 specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), meeting stringent environmental and safety requirements for industrial use.