S-91239A764 M2.5 x 20 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 10.9 strength grade and 140,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance thanks to the black-oxide coating on alloy steel, extending service life in harsh environments
• Optimal torque transmission through the hex drive design with 1.5mm drive size, ensuring secure installation and removal
• Easy and quick assembly with coarse 0.45mm pitch threading and Class 6g fit, reducing installation time and effort
• Versatile rounded button head profile that provides a low-profile finish while distributing clamping force evenly
• Full threading along the 20mm length for maximum grip and adjustment flexibility in various material thicknesses
• High hardness of Rockwell C32 to resist wear and deformation under heavy loads and vibration

Professional Applications & Engineering Value

This M2.5 metric screw with black-oxide alloy steel construction addresses critical engineering needs in industrial settings where high strength and corrosion protection are paramount. The fully threaded design with coarse 0.45mm pitch ensures rapid installation in metals and plastics, minimizing assembly time while providing secure fastening. The rounded head style and hex drive allow for flush mounting and high-torque application, making it ideal for machinery, automotive components, and electronic enclosures that require durable fasteners with consistent performance. Its compliance with ISO 7380 guarantees dimensional accuracy and interchangeability, supporting efficient production lines and maintenance operations.

Specification Summary & Compliance

This fastener features a thread fit of Class 6g per metric standards, ensuring precise engagement and reliability. It is manufactured to meet ISO 7380 specifications for dimensional consistency and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for various industrial applications. With a right-hand thread and 20mm length, it adheres to strict quality controls for tensile strength and hardness, providing assurance in critical assemblies.