S-95440A123 M8 x 25 mm ASTM A276 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction and protective Black Oxide finish
• Exceptional mechanical strength with 70,000 PSI tensile strength and Rockwell B70 hardness for reliable, long-lasting fastening
• Optimized flush mounting with a 100° countersink angle and undercut flat head design for a clean, secure fit in precision applications
• Efficient installation and removal with a 5mm hex drive that provides excellent torque transfer and resists cam-out
• Precise and reliable thread engagement ensured by Class 6g thread fit and coarse M8x1.25mm threading for robust connections
• Full-length threading for maximum grip and holding power across the entire 25mm length of the screw
• Compliance with major industry standards including ASTM A276, RoHS 3, and REACH for guaranteed quality and environmental safety

Professional Applications & Engineering Value

This M8 flat head screw is engineered to solve critical challenges in demanding industrial settings. The core value lies in its 316 Stainless Steel material, which offers exceptional resistance to corrosion from chemicals, saltwater, and extreme temperatures, making it ideal for marine, chemical processing, and outdoor applications. The Black Oxide finish adds an extra layer of protection against oxidation while reducing light reflection. The fully threaded design and coarse metric thread ensure high vibration resistance and rapid assembly in machinery, automotive components, and structural frameworks. The undercut flat head with a 100° countersink angle allows for a flush, low-profile installation, preventing snagging and improving aesthetic integration in precision equipment and enclosures. This combination directly addresses common pain points like fastener failure, corrosion-induced maintenance, and installation inefficiency.

Specification Summary & Compliance

This screw maintains precise dimensional tolerances, including a head diameter tolerance of -0.127 to 0.127 mm and a Class 6g thread fit per ISO metric standards, ensuring consistent performance. It is manufactured in compliance with ASTM A276 for material consistency and meets critical regulatory requirements, being RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free of hazardous substances and safe for use in regulated industries.