S-94361A573 M12 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability with alloy steel construction and Rockwell C32 hardness for long service life in demanding environments.
• Superior corrosion resistance from the black oxide finish, reducing maintenance needs and extending component lifespan.
• High tensile strength of 140,000 psi ensures reliable performance under heavy loads and mechanical stress.
• Precise alignment and stability due to the 16mm shoulder diameter with tight tolerance (-0.072 to -0.01 mm) and 50mm shoulder length.
• Easy installation and removal with a knurled socket head and 8mm hex drive, providing secure grip and torque application.
• Accurate thread engagement with Class 5g6g thread fit and coarse 1.75 mm pitch for quick assembly and vibration resistance.
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries.

Professional Applications & Engineering Value

This M12 shoulder screw is engineered to address critical alignment and wear challenges in industrial machinery, robotics, and precision equipment. The alloy steel material, combined with a black oxide finish, provides excellent resistance to corrosion and abrasion, reducing downtime in harsh operating conditions. The precisely machined 16mm shoulder diameter with minimal tolerance ensures components like bearings and gears remain securely positioned, minimizing misalignment and extending part life. With a right-hand metric thread and Class 5g6g fit, it offers reliable fastening in high-vibration applications, making it ideal for automotive assemblies, conveyor systems, and automated manufacturing lines where consistent performance is essential.

Specification Summary & Compliance

This shoulder screw features a metric thread size M12 with a 1.75 mm coarse pitch and Class 5g6g thread fit per ISO standards, ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is tightly controlled at -0.072 to -0.01 mm, and the shoulder length tolerance is 0 to 0.25 mm for precise engineering applications. It complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel and REACH (EC 1907/2006) regulations, supporting use in environmentally conscious industries.