S-92981A744 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Precise alignment and reduced assembly wear thanks to the 4mm shoulder diameter with tight tolerance control (-0.072 to -0.01 mm)
• Exceptional mechanical strength and load-bearing capacity from the high-strength alloy steel construction, providing 140,000 psi tensile strength and 84,000 psi minimum shear strength
• Superior corrosion resistance and minimal light reflection with the durable black oxide finish, ideal for industrial environments
• Reliable and repeatable fastening performance ensured by the Class 5g6g thread fit and M3x0.5 coarse thread for secure connections
• Extended service life and resistance to deformation due to the Rockwell C32 hardness, maintaining dimensional stability under stress
• Easy installation and removal in confined spaces with the standard hex socket drive and 2mm drive size
• Global compliance and environmental safety by meeting ISO 7379, RoHS 3, and REACH standards for responsible manufacturing

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to solve critical alignment and pivot point challenges in precision machinery, automation systems, and electronic assemblies. The 18mm shoulder length and 4mm shoulder diameter with strict tolerances provide a stable, rotating bearing surface that minimizes wear on mating parts, reducing maintenance and improving operational accuracy. Made from alloy steel and finished with black oxide, it offers high tensile and shear strength, essential for dynamic loads and vibration-prone applications. The hex socket drive and coarse metric thread ensure quick, secure fastening, making it a reliable choice for industrial equipment where precision and durability are paramount.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 standards, with a Class 5g6g thread fit for precise dimensional control. The shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm, ensuring consistent performance. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for environmentally conscious and safe industrial use.