S-95440A110 M4 x 16 mm ASTM A276 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction, ideal for harsh industrial environments and chemical exposure
• Enhanced durability and wear resistance from the black oxide finish, providing long-lasting performance and a sleek appearance
• Reliable fastening and easy installation with a flat undercut head and 100° countersink angle for a flush, secure fit in various materials
• High mechanical strength offering Rockwell B70 hardness and 70,000 psi tensile strength to withstand significant loads and stress
• Precise thread engagement with Class 6g fit and coarse M4 x 0.7mm threading, ensuring consistent, vibration-resistant connections
• Efficient drive compatibility using a 2.5 mm hex drive for quick, secure tightening with standard tools, reducing assembly time
• Compliance with international standards including ASTM A276, RoHS 3, and REACH, guaranteeing safety and regulatory adherence for global projects

Professional Applications & Engineering Value

This M4 flat head screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and assembly efficiency. Made from 316 Stainless Steel with a black oxide finish, it excels in demanding environments like marine, chemical processing, and outdoor equipment, where moisture and chemicals are prevalent. The fully threaded design and Class 6g thread fit provide secure, uniform clamping force, reducing the risk of failure in high-stress applications. The flat undercut head and 100° countersink angle allow for a seamless, low-profile installation, minimizing protrusion and improving aesthetics in machinery, electronics, and structural assemblies. By combining robust materials with precise metric threading, these screws enhance reliability and longevity in industrial fastening systems.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including a head diameter tolerance of -0.127 to 0.127 mm and Class 6g thread fit per metric standards. It meets ASTM A276 for material specifications, ensuring consistent quality and performance. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from hazardous substances, supporting safe use in various industrial and consumer applications.