S-91239A427 M8 x 25 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength with 140,000 psi capacity for reliable load-bearing in demanding assemblies
• Superior corrosion resistance through black-oxide coating on alloy steel, extending service life in harsh environments
• High hardness rating of Rockwell C32 ensures minimal wear and consistent performance under vibration
• Precise Class 6g thread fit guarantees smooth installation and secure fastening without cross-threading
• Convenient 5mm hex drive allows for high-torque application with standard tools, reducing assembly time
• Fully threaded M8 coarse pitch design provides maximum grip length and rapid installation in various materials
• Compliant with ISO 7380 and environmental regulations ensuring international quality standards and safe usage

Professional Applications & Engineering Value

Engineered for industrial applications where high-strength fastening and corrosion protection are critical, these Class 10.9 metric screws deliver reliable performance in machinery, automotive components, and structural assemblies. The black-oxide alloy steel construction resists oxidation, while the fully threaded right-hand design with coarse M8 x 1.25mm pitch ensures quick, secure engagement in metals and composites. The rounded button head with 5mm hex drive provides a low-profile finish that minimizes snagging and allows access in confined spaces, making these ISO 7380 screws ideal for maintenance and production lines requiring durable, repeatable fastening solutions.

Specification Summary & Compliance

This 25mm length screw features M8 coarse threads with Class 6g tolerance for precise fit, manufactured to ISO 7380 specifications. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance for environmental safety, with Class 10.9 strength grade ensuring consistent mechanical properties across batches.