S-93395A223 M3 x 40 mm DIN 7991 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel and passivated finish, ideal for harsh or marine environments.
• High tensile strength of 70,000 psi ensures reliable, durable fastening under mechanical stress.
• Hex drive design (2mm) provides secure tool engagement and reduces the risk of stripping during installation.
• Fully threaded M3 coarse pitch (0.5mm) offers quick assembly and strong holding power in various materials.
• Precise Class 6g thread fit guarantees consistent performance and easy compatibility with standard nuts and tapped holes.
• Flat head with 90° countersink allows for a flush, unobtrusive finish in countersunk applications.
• Compliance with DIN 7991, RoHS 3, and REACH ensures adherence to international quality and environmental standards.

Professional Applications & Engineering Value

This M3 flat head screw is engineered from 316 stainless steel with a passivated finish to combat corrosion in demanding settings like chemical processing, marine hardware, and outdoor equipment. The fully threaded design and coarse metric thread enable rapid installation and robust grip in soft metals or plastics, reducing assembly time. The hex drive ensures high torque application without slippage, critical for maintenance and production lines. By meeting DIN 7991 specifications, it delivers consistent dimensional accuracy, minimizing the risk of fastener failure and enhancing the longevity of industrial assemblies.

Specification Summary & Compliance

This screw features a metric M3 x 0.5mm thread with Class 6g tolerance for precise fit, a head diameter of 6 mm (tolerance -0.3 to 0 mm), and a length of 40 mm. It is manufactured in accordance with DIN 7991 and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial use.