S-92981A759 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with a durable black oxide finish, extending service life in harsh industrial environments.
• High-strength performance from alloy steel construction and Rockwell C32 hardness, ensuring reliable load-bearing capacity.
• Precision alignment and smooth rotation enabled by the 75mm shoulder with tight diameter and length tolerances.
• Secure and efficient installation with a standard socket head and 5mm hex drive, minimizing tool slippage.
• Wide compatibility with coarse M8x1.25 metric threads and Class 5g6g fit, facilitating easy assembly and interchangeability.
• Compliance with international standards including ISO 7379, RoHS 3, and REACH, ensuring safety and regulatory adherence.
• Optimized for high-stress applications due to the robust material and precise thread design, reducing the risk of mechanical failure.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and pivot point requirements in demanding machinery. The alloy steel core, hardened to Rockwell C32, provides the necessary tensile strength to withstand dynamic loads without deformation. The black oxide finish offers a protective layer against oxidation and wear, making it ideal for automotive assemblies, conveyor systems, and precision tooling where exposure to moisture or friction is common. The 75mm shoulder length with controlled tolerances ensures precise component spacing and smooth rotational movement, eliminating misalignment issues. With its coarse metric thread (M8x1.25) and Class 5g6g thread fit, it guarantees quick, secure fastening in high-vibration environments, reducing maintenance downtime and enhancing operational reliability.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 specifications, with a Class 5g6g thread fit ensuring dimensional accuracy and interchangeability. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, providing precise control for engineering applications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting sustainable manufacturing practices.