S-93395A263 M4 x 20 mm DIN 7991 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Precise flush installation enabled by the 90° countersink angle and flat head design, reducing snagging risks
• High-strength performance with 70,000 psi tensile strength, ensuring reliable fastening under demanding loads
• Secure, slip-resistant driving using the 2.5 mm hex drive, providing excellent torque transfer during installation
• Consistent thread engagement with fully threaded Class 6g fit and coarse pitch, facilitating quick assembly and vibration resistance
• Regulatory compliance assurance meeting DIN 7991, RoHS 3, and REACH standards for safe, sustainable use
• Accurate dimensional tolerances including head diameter control, ensuring compatibility and repeatability in manufacturing

Professional Applications & Engineering Value

These M4 metric screws in 316 stainless steel are engineered to address critical challenges in industrial settings where corrosion and mechanical stress are prevalent. The passivated finish enhances durability against chemicals and moisture, extending service life in marine, chemical processing, and outdoor equipment. The flat head with 90° countersink allows for seamless surface integration, preventing protrusions that could interfere with moving parts or safety. Combined with a hex drive for firm tool engagement and coarse threading for rapid installation, these screws reduce assembly time and maintenance needs. Ideal for machinery, enclosures, and structural frameworks, they deliver reliable performance where high tensile strength and regulatory compliance are non-negotiable.

Specification Summary & Compliance

This product adheres to DIN 7991 specifications, with thread fit Class 6g ensuring precision in metric coarse threading (M4 x 0.7 mm). Dimensions include a length of 20 mm, head diameter of 8 mm with controlled tolerance, and full threading for consistent engagement. It conforms to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances and supporting environmentally responsible procurement.