S-94361A571 M12 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish on alloy steel provides superior protection against rust, extending service life in demanding industrial environments.
• High Tensile Strength for Demanding Applications: With a tensile strength of 140,000 psi and Rockwell C32 hardness, this screw reliably withstands high stress and load conditions.
• Precision Thread Fit for Secure Fastening: Class 5g6g thread fit ensures consistent, reliable engagement and reduces the risk of loosening under vibration.
• Secure and Easy Installation: Knurled socket head with 8 mm hex drive offers excellent grip and torque transmission, minimizing tool slippage during assembly.
• Accurate Shoulder for Component Alignment: The 16 mm shoulder diameter with tight tolerance provides a precise pivot or bearing surface, ensuring proper part location.
• Coarse Thread for Faster Assembly: M12x1.75 coarse thread allows for quick installation and is less susceptible to clogging in rough applications.
• Compliant with Global Environmental Standards: Meets RoHS 3 and REACH regulations, ensuring safety and environmental responsibility in your supply chain.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to solve critical alignment and high-stress challenges in precision machinery. The alloy steel construction, combined with a black oxide finish, offers exceptional resistance to wear and corrosion, making it ideal for automotive assemblies, industrial robots, and conveyor systems where exposure to oils and moisture is common. The knurled socket head and hex drive ensure secure tool engagement, reducing installation errors and maintenance downtime. Its precision shoulder acts as a reliable datum for rotating parts, preventing misalignment and reducing bearing wear. By utilizing a coarse thread (M12x1.75) and Class 5g6g fit, this fastener provides robust, vibration-resistant connections in heavy-duty applications, enhancing overall equipment reliability and lifespan.

Specification Summary & Compliance

This shoulder screw adheres to metric (M12x1.75) threading standards with a Class 5g6g thread fit for precise tolerance. Key dimensional tolerances include a shoulder diameter of 16 mm (-0.072 to -0.01 mm) and shoulder length of 30 mm (0 to 0.25 mm). It is manufactured from high-strength alloy steel and meets RoHS 3 (2015/863/EU) with exemption 6(a) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances as per the latest regulations.