S-91306A668 M5 x 20 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with 140,000 PSI tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated alloy steel construction, extending service life in harsh environments
• Optimized thread engagement with coarse 0.8mm pitch providing faster installation and enhanced vibration resistance
• Precise hex drive compatibility with 3mm drive size ensuring secure tool engagement and reduced stripping risk
• High-strength Class 10.9 rating delivering consistent performance under heavy mechanical stress
• Low-profile rounded head design offering smooth surface finish and reduced snagging in confined spaces
• Full threading along 20mm length enabling maximum grip strength throughout the entire fastener

Professional Applications & Engineering Value

This M5 rounded head screw delivers critical engineering advantages for industrial applications where vibration resistance and structural integrity are paramount. The zinc-plated alloy steel construction provides essential corrosion protection for machinery, equipment assemblies, and structural frameworks exposed to environmental elements. The coarse thread pitch (0.8mm) ensures rapid installation and maintains clamping force in high-vibration environments common in automotive, manufacturing, and heavy equipment applications. With Class 10.9 strength rating and Rockwell C32 hardness, this fastener withstands extreme mechanical stresses while the button head profile and hex socket drive facilitate installation in space-constrained applications without compromising structural performance.

Specification Summary & Compliance

This metric fastener features M5 x 0.8mm coarse threading with Class 6g thread fit tolerance for precise engagement. The 20mm fully threaded design ensures consistent holding power along the entire length. Manufacturing complies with ISO 7380 standards for dimensional accuracy and performance. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use across various industrial sectors while maintaining the high-strength characteristics required for critical fastening applications.