S-91263A454 M5 x 30 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional durability with Class 12.9 strength grade, supporting heavy-duty applications without failure
• Superior corrosion resistance from zinc-plated alloy steel, extending service life in harsh environments
• High tensile strength of 170,000 PSI ensures reliable fastening under extreme mechanical stress
• Easy installation and removal with 3 mm hex drive, reducing assembly time and tool slippage
• Precise coarse thread (0.8 mm pitch) provides quick engagement and strong holding power in various materials
• Full threading along the 30 mm length offers maximum grip and adjustability in deep or variable thickness applications
• Compliance with DIN 7991 and environmental standards guarantees consistent quality and safe use in regulated industries

Professional Applications & Engineering Value

This M5 flat head screw is engineered to address critical challenges in industrial settings, such as vibration loosening and material fatigue. The zinc-plated alloy steel construction provides excellent resistance to rust and wear, making it ideal for machinery, automotive assemblies, and structural frameworks exposed to moisture or chemicals. With a Class 12.9 strength rating and Rockwell C39 hardness, it maintains integrity under high loads, while the fully threaded coarse metric thread ensures rapid installation and secure fastening in metals or composites. The flat head design and 90° countersink angle allow for flush mounting, reducing protrusion risks and improving aesthetics in precision equipment.

Specification Summary & Compliance

This fastener features M5 x 0.8 mm coarse threads with a Class 5g6g thread fit for precise dimensional accuracy. It adheres to DIN 7991 manufacturing standards and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and reliability in industrial applications.