S-95440A118 M6 x 20 mm ASTM A276 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 316 stainless steel with black oxide finish, ideal for harsh environments and extended service life.
• High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for reliable, durable fastening under load.
• Precision thread fit (Class 6g) ensures smooth installation and secure hold in coarse (1 mm pitch) metric M6 threads.
• Streamlined assembly with a 100° countersink angle and undercut flat head design for a flush, professional finish.
• Efficient drive engagement using a 4 mm hex drive, providing secure torque transfer and reducing tool slippage.
• Full threading along the 20 mm length offers maximum grip and adjustment flexibility in various material thicknesses.
• Regulatory compliance with ASTM A276, RoHS 3, and REACH standards, ensuring material quality and environmental safety.

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these M6 flat head screws in 316 stainless steel address critical challenges like corrosion in marine, chemical, or outdoor settings. The black oxide finish enhances surface durability and reduces galling, while the undercut flat head profile and 100° countersink angle allow for a seamless fit, minimizing protrusion and improving aerodynamics or aesthetics in assemblies. With a coarse thread pitch and Class 6g thread fit, these screws provide quick, reliable fastening in metals and plastics, reducing installation time and preventing cross-threading. Fully threaded and paired with a 4 mm hex drive, they ensure consistent clamping force, making them ideal for machinery, automotive, and structural projects where corrosion resistance and high tensile strength are paramount.

Specification Summary & Compliance

This metric screw features precise dimensions, including an M6 thread size with 1 mm coarse pitch, 20 mm length, and a head diameter tolerance of -0.127 to 0.127 mm. Threading conforms to Class 6g fit for standard metric applications, and manufacturing meets ASTM A276 for material integrity. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring adherence to environmental and safety standards.