S-90388A122 M5 x 16 mm ASME B18.3.4M, ISO 7380 Tamper-Resistant Torx Steel Button Head Screws

Key Features & Benefits at a Glance

• Superior tamper resistance with the specialized Torx T25 drive, deterring unauthorized access in public or high-security installations.
• Enhanced corrosion protection from the black-oxide finish on alloy steel, extending service life in demanding industrial environments.
• High mechanical strength and durability, with a tensile strength of 130,000 psi and Rockwell C38 hardness for reliable performance under load.
• Secure and precise fastening ensured by the Class 6g thread fit and fully threaded M5x0.8 mm coarse thread design for optimal engagement.
• Streamlined, low-profile installation with the rounded button head, reducing snagging and providing a finished appearance.
• Broad industry compliance, meeting ASME B18.3.4M and ISO 7380 standards for guaranteed dimensional accuracy and interchangeability.
• Environmentally responsible manufacturing, compliant with RoHS 3 and REACH regulations for safe use in various markets.

Professional Applications & Engineering Value

This M5 metric screw is engineered to address critical challenges in industrial assembly and maintenance. The black-oxide alloy steel construction provides a robust barrier against rust and wear, making it ideal for machinery, automotive components, and electronic enclosures exposed to harsh conditions. Its tamper-resistant Torx T25 drive offers a significant security advantage, preventing vandalism and unauthorized disassembly in public infrastructure, transportation, and secure facilities. The fully threaded design with a coarse thread pitch ensures rapid installation and high clamp load distribution, reducing the risk of loosening under vibration. With a rounded button head profile, it minimizes protrusion risks while maintaining a clean aesthetic, perfectly suited for applications where safety and appearance are paramount.

Specification Summary & Compliance

This fastener features an M5 x 0.8 mm metric coarse thread with a Class 6g thread fit for precise dimensional tolerance. It is manufactured in accordance with ASME B18.3.4M and ISO 7380 standards, ensuring consistent quality and global interoperability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its adherence to strict environmental and safety standards for hazardous substances.