S-94361A539 M6 Shoulder Screws

Key Features & Benefits at a Glance

• Exceptional durability and strength with alloy steel construction and 140,000 psi tensile strength, ensuring reliable performance in high-stress industrial applications.
• Superior corrosion resistance provided by the black oxide finish, extending service life in harsh or humid environments.
• Precise alignment and smooth rotation thanks to the 8mm shoulder diameter with tight tolerance, minimizing wear and vibration in assemblies.
• Easy installation and removal with a 4mm hex drive and knurled head texture, offering secure grip and reducing tool slippage.
• Accurate and secure fastening from the Class 5g6g thread fit and M6x1mm coarse thread, ensuring consistent engagement and load distribution.
• High hardness for wear resistance with Rockwell C32 rating, maintaining dimensional stability under repeated use.
• Compliance with environmental regulations including RoHS 3 and REACH, making it suitable for global industrial and electronic applications.

Professional Applications & Engineering Value

This M6 shoulder screw is engineered to address common challenges in precision machinery, automation systems, and assembly jigs where alignment and durability are critical. The alloy steel material combined with a black oxide finish provides excellent resistance to corrosion and wear, reducing maintenance needs in industrial settings. The 40mm shoulder length and precise 8mm shoulder diameter allow for accurate positioning of components, preventing misalignment and extending the life of moving parts. With a right-hand metric thread and coarse pitch, it ensures quick installation and reliable holding power, ideal for applications in robotics, automotive, and electronic enclosures. Its socket head design with hex drive facilitates easy access in confined spaces, enhancing efficiency in production lines.

Specification Summary & Compliance

This shoulder screw adheres to metric thread standards with an M6x1mm coarse thread and Class 5g6g thread fit for precise tolerance. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with RoHS 3 (2015/863/EU) under exemption 6(a) for lead in steel and REACH (EC 1907/2006), meeting environmental and safety regulations for industrial use.