S-92981A742 M3 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability - Alloy steel construction with Rockwell C32 hardness provides superior resistance to wear and deformation in demanding industrial environments.
• High Load Capacity - 140,000 psi tensile strength and 84,000 psi shear strength ensure reliable performance under heavy mechanical stress and vibration.
• Precision Alignment - Shoulder diameter of 4mm with tight tolerance (-0.072 to -0.01 mm) guarantees exact fit for accurate component positioning and reduced assembly errors.
• Corrosion Resistance - Black oxide finish offers effective protection against rust and oxidation, extending service life in harsh operating conditions.
• Secure Fastening - Class 5g6g thread fit and M3 x 0.5mm coarse thread design enable quick, stable installation with reduced risk of stripping or loosening.
• Easy Installation - 2mm hex socket drive allows for efficient torque application in confined spaces, speeding up assembly and maintenance processes.
• Regulatory Compliance - Meets ISO 7379, RoHS 3, and REACH standards, ensuring safety and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

This M3 shoulder screw is engineered to address critical alignment and load-bearing challenges in precision machinery. The alloy steel material, combined with black oxide finish, provides exceptional strength and corrosion resistance, making it ideal for automotive assemblies, electronic enclosures, and industrial equipment where vibration and environmental exposure are concerns. The 10mm shoulder length with minimal tolerance (0 to 0.25 mm) ensures precise pivot points and bearing surfaces, reducing wear on connected components. Its right-hand coarse thread and socket head design facilitate quick disassembly for maintenance, streamlining operations in high-volume production lines. By integrating these features, the screw enhances equipment reliability and minimizes downtime in industrial applications.

Specification Summary & Compliance

This metric shoulder screw adheres to ISO 7379 standards, with thread dimensions of M3 x 0.5mm coarse pitch and a Class 5g6g thread fit for consistent precision. Shoulder diameter tolerance is tightly controlled at -0.072 to -0.01 mm, and shoulder length tolerance ranges from 0 to 0.25 mm, ensuring reliable performance in assemblies. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting sustainable and safe industrial practices.