S-92981A050 M4 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Enhanced Durability & Strength: With 140,000 psi tensile strength and 84,000 psi minimum shear strength, this screw withstands high-stress applications, reducing failure risks and maintenance needs.
• Superior Corrosion Resistance: The black oxide finish provides excellent protection against rust and wear, extending service life in harsh industrial environments.
• Precision Fit & Stability: Class 5g6g thread fit and precise shoulder diameter tolerance (-0.072 to -0.01 mm) ensure secure, vibration-resistant assemblies with minimal play.
• Easy Installation & Removal: The 2.5 mm hex socket drive allows for straightforward tightening with standard tools, speeding up assembly and disassembly processes.
• Reliable Performance in Demanding Conditions: Rockwell C32 hardness and alloy steel construction offer consistent performance under mechanical stress and temperature variations.
• Broad Compliance & Safety: Meets ISO 7379 standards and is RoHS 3 and REACH compliant, ensuring environmental safety and global regulatory acceptance.
• Versatile Shoulder Design: The 25 mm shoulder length with standard fit provides accurate alignment and spacing in machinery, reducing component wear.

Professional Applications & Engineering Value

This M4 shoulder screw is engineered to address common industrial challenges such as misalignment, vibration loosening, and corrosion in precision assemblies. Made from alloy steel with a black oxide finish, it offers robust protection against moisture and chemicals, making it ideal for automotive, aerospace, and manufacturing equipment. The coarse thread and right-hand thread direction facilitate quick installation in high-volume production, while the socket head design allows for compact spaces and reliable torque application. Its 25 mm shoulder length ensures precise component positioning, minimizing wear and improving overall system longevity in demanding applications like robotics and conveyor systems.

Specification Summary & Compliance

This screw features a Class 5g6g thread fit per ISO standards, with shoulder diameter tolerance of -0.072 to -0.01 mm and shoulder length tolerance of 0 to 0.25 mm for high precision. It complies with ISO 7379 manufacturing specifications and is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety regulations without hazardous substances.