S-95440A107 M4 x 8 mm ASTM A276 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Enhanced durability and wear resistance with a black oxide finish that provides added protection against oxidation and abrasion.
• Reliable thread engagement with Class 6g precision and coarse threading, ensuring easy installation and secure fastening in various materials.
• High tensile strength of 70,000 psi and Rockwell B70 hardness for dependable performance under mechanical stress and vibration.
• Optimized head design featuring an undercut flat head and 100° countersink angle, allowing for flush mounting and reduced risk of snagging.
• Easy installation and removal with a 2.5 mm hex drive, providing a secure grip and minimizing tool slippage during assembly.
• Compliance with industry standards including ASTM A276, RoHS 3, and REACH, ensuring safety, environmental responsibility, and consistent quality.

Professional Applications & Engineering Value

These M4 flat head screws are engineered to address common industrial challenges, such as corrosion in aggressive settings and the need for precise, low-profile fastening. The 316 stainless steel material offers excellent resistance to chemicals, saltwater, and high temperatures, making them suitable for marine equipment, chemical processing plants, and food machinery. The black oxide finish enhances surface durability while maintaining a sleek appearance. With a fully threaded design and Class 6g thread fit, these screws provide consistent clamping force and vibration resistance in assemblies like electronic enclosures, automotive components, and structural frameworks. The undercut flat head and coarse thread facilitate quick installation and reliable performance in demanding applications, reducing maintenance and downtime.

Specification Summary & Compliance

This product features precise dimensional tolerances, including a head diameter tolerance of -0.127 to 0.127 mm and a Class 6g thread fit per metric standards. It complies with ASTM A276 for material consistency, RoHS 3 (2015/863/EU) for restricted substance control, and REACH (EC 1907/2006) for environmental safety, ensuring adherence to global regulatory requirements.