S-92981A042 M4 ISO 7379 Shoulder Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with black oxide finish, ideal for harsh industrial environments
• High tensile strength of 140,000 psi ensures reliable performance under heavy loads
• Precision shoulder diameter tolerance (-0.072 to -0.01 mm) for accurate alignment in assemblies
• Rockwell C32 hardness provides excellent wear resistance and durability
• Class 5g6g thread fit guarantees smooth installation and secure fastening
• Socket head with hex drive allows for easy access in confined spaces
• Compliance with ISO 7379, RoHS 3, and REACH ensures safety and regulatory adherence

Professional Applications & Engineering Value

This M4 shoulder screw is engineered from alloy steel with a black oxide finish to combat corrosion in demanding settings like machinery, automotive, and electronics. The 20mm shoulder length with tight diameter tolerance provides precise locating and rotational control, reducing wear on components. Its coarse 0.7mm pitch and Class 5g6g thread enable quick assembly and high shear strength (84,000 psi), solving alignment and vibration issues in industrial applications. The socket head design with hex drive simplifies maintenance in hard-to-reach areas, enhancing operational efficiency.

Specification Summary & Compliance

This shoulder screw adheres to ISO 7379 standards, with thread dimensions of M4 x 0.7mm and a Class 5g6g thread fit for metric precision. Shoulder diameter tolerance is -0.072 to -0.01 mm, and shoulder length tolerance is 0 to 0.25 mm. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.