S-90909A484 M8 x 20 mm ISO 7380 Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 stainless steel construction and passivated finish, extending service life.
• Enhanced load distribution and stability with the integrated flange, reducing the risk of surface damage and loosening under vibration.
• High tensile strength of 70,000 psi ensures reliable fastening in demanding mechanical applications without failure.
• Easy and secure installation with the 5 mm hex drive, allowing for high torque application and reduced tool slippage.
• Accurate and consistent thread engagement with Class 6g thread fit and coarse M8 x 1.25 mm pitch, facilitating quick assembly.
• Full threading along the 20 mm length provides maximum grip and adjustability in varied material thicknesses.
• Compliance with ISO 7380, RoHS 3, and REACH ensures adherence to international quality and environmental standards for safe use.

Professional Applications & Engineering Value

This 316 stainless steel flanged button head screw is engineered to address common industrial challenges such as corrosion in marine, chemical, and outdoor settings. The passivated finish enhances the innate resistance of 316 stainless steel, preventing rust and pitting even in high-moisture or acidic conditions. Its flanged design eliminates the need for separate washers, distributing clamp load evenly and protecting sensitive surfaces from indentation. With a coarse metric thread (M8 x 1.25 mm) and Class 6g thread fit, it ensures rapid, precise installation in machinery, automotive assemblies, and structural frameworks, reducing downtime and maintenance costs. The fully threaded shank and hex drive offer versatility and high torque capability, making it ideal for applications where vibration resistance and durability are critical.

Specification Summary & Compliance

This screw features an M8 x 1.25 mm metric coarse thread with Class 6g thread fit for standard tolerance, ensuring compatibility with metric nuts and tapped holes. It is manufactured in accordance with ISO 7380 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use across various sectors.