S-91263A851 M10 x 40 mm DIN 7991, ISO 10642 Alloy Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional load-bearing capacity with Class 10.9 strength rating and 120,000 psi tensile strength for reliable performance in demanding applications
• Superior corrosion resistance through zinc-plated alloy steel construction, extending service life in harsh industrial environments
• Precise installation control with 6mm hex drive design providing secure tool engagement and reduced stripping risk
• Optimized thread engagement featuring M10x1.5mm coarse thread pitch for faster assembly and reduced cross-threading incidents
• Enhanced flush mounting capability with standard flat head profile and 90° countersink angle for clean, professional finishes
• Reliable mechanical properties backed by Rockwell C32 hardness for consistent performance under vibration and stress
• Partial threading design allowing for precise clamping force distribution across connected components

Professional Applications & Engineering Value

Engineered for heavy-duty industrial applications, these M10 flat head screws provide critical solutions for machinery assembly, structural frameworks, and equipment manufacturing. The zinc-plated alloy steel construction addresses corrosion concerns in manufacturing environments, while the Class 10.9 strength rating ensures reliable performance under high vibration and dynamic loading conditions. The coarse thread pitch (1.5mm) facilitates quicker installation in production lines and reduces the risk of thread damage during assembly. With partial threading and precise Class 6g thread fit, these fasteners deliver optimal clamping force distribution, making them ideal for precision engineering applications where joint integrity is paramount. The combination of high tensile strength and standard flat head profile ensures secure, flush mounting in countersunk applications across various industrial sectors.

Specification Summary & Compliance

Manufactured to exacting DIN 7991/ISO 10642 standards with Class 6g thread tolerance ensuring precise fit and interchangeability. The M10x1.5mm coarse thread configuration meets international metric specifications, while the 40mm length with 26mm minimum thread length provides consistent engagement depth. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and regulatory adherence for global industrial applications.