S-91306A775 M8 x 18 mm ISO 7380 Steel Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Exceptional tensile strength of 140,000 psi ensures reliable performance under high-stress conditions, reducing the risk of fastener failure in demanding applications.
• Superior corrosion resistance from zinc-plated alloy steel construction prolongs service life and maintains integrity in harsh industrial environments.
• High hardness rating (Rockwell C32) provides excellent wear resistance, maintaining thread integrity through repeated assembly and disassembly cycles.
• Class 10.9 strength grade guarantees consistent mechanical properties for critical connections where safety and reliability are paramount.
• 5mm hex drive design allows for secure tool engagement and efficient installation with standard industrial tools, minimizing slippage and damage.
• Fully threaded M8 coarse pitch configuration enables faster installation and superior holding power across the entire fastener length.
• Rounded button head profile offers a low-profile finish that reduces snagging hazards while providing adequate bearing surface.

Professional Applications & Engineering Value

These M8 Class 10.9 rounded head screws deliver exceptional engineering value across industrial applications where vibration resistance, structural integrity, and corrosion protection are critical. The zinc-plated alloy steel construction combined with the fully threaded coarse pitch design ensures rapid installation and reliable performance in machinery assembly, automotive components, and heavy equipment manufacturing. The hex drive configuration provides positive torque transmission during high-tension fastening operations, while the rounded button head creates a finished appearance that minimizes protrusion in confined spaces. Engineered to withstand extreme mechanical stresses, these metric screws solve common industrial fastening challenges including joint relaxation, thread stripping, and environmental degradation.

Specification Summary & Compliance

This fastener features M8 x 1.25mm coarse thread with Class 6g thread fit tolerance ensuring precise engagement with mating components. Manufactured to ISO 7380 standards for dimensional consistency and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, containing no restricted substances above threshold limits. With an 18mm length and fully threaded design, these screws maintain consistent mechanical properties throughout their service life.