S-92981A340 M8 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Corrosion Resistance: Black oxide finish provides reliable protection against rust and wear in demanding industrial environments, extending service life.
• Superior Tensile & Shear Strength: Made from high-strength alloy steel with a tensile strength of 140,000 psi and minimum shear strength of 84,000 psi, ensuring secure fastening under high-stress conditions.
• Precision Shoulder for Accurate Alignment: 55mm shoulder length with tight tolerances guarantees exact component positioning and reduces assembly errors.
• Reliable Thread Performance: M8x1.25 coarse pitch thread with Class 5g6g fit offers easy installation and consistent holding power in coarse-thread applications.
• Efficient Hex Drive Installation: 5mm hex socket head allows for high-torque application with standard tools, speeding up assembly and maintenance.
• Compliance with International Standards: Meets ISO 7379 specifications, ensuring interchangeability and reliability in global engineering projects.
• Environmental & Safety Compliance: RoHS 3 and REACH compliant, making it suitable for regulated industries without hazardous substances.

Professional Applications & Engineering Value

This M8 shoulder screw is engineered to address critical alignment and load-bearing challenges in industrial machinery, automation systems, and precision equipment. The alloy steel construction, combined with a black oxide finish, provides exceptional resistance to corrosion and mechanical stress, making it ideal for harsh environments like manufacturing plants and automotive assemblies. The 55mm shoulder length with precise tolerances ensures accurate shaft positioning, reducing wear on moving parts and minimizing maintenance downtime. With a coarse pitch thread (M8x1.25) and Class 5g6g fit, it delivers quick, secure fastening in applications requiring robust performance, such as conveyor systems, robotics, and heavy-duty fixtures. Its socket head design facilitates easy access in confined spaces, enhancing installation efficiency for B2B users focused on reliability and productivity.

Specification Summary & Compliance

This shoulder screw features a metric M8x1.25 coarse pitch thread with Class 5g6g tolerance for precise fit and performance. The shoulder diameter is 10 mm with a tolerance of -0.072 to -0.01 mm, and the shoulder length is 55 mm with a tolerance of 0 to 0.25 mm, ensuring high dimensional accuracy. It complies with ISO 7379 manufacturing standards and is verified to meet RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for industrial use.