S-91263A923 M8 x 80 mm DIN 7991 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Exceptional durability with Class 10.9 alloy steel construction, providing reliable performance under high-stress conditions
- Superior corrosion resistance from zinc plating, extending service life in harsh industrial environments
- Easy installation and removal with 5mm hex drive design, reducing assembly time and tool wear
- Precise thread engagement through Class 6g thread fit and coarse 1.25mm pitch, ensuring secure fastening in various materials
- High tensile strength rating of 120,000 psi with Rockwell C32 hardness, preventing stripping and deformation
- Full threading along 80mm length for maximum grip and load distribution across the entire fastener
- Standard 90° countersink angle enabling flush mounting in pre-drilled applications for clean finishes
Professional Applications & Engineering Value
These M8 flat head screws with Class 10.9 strength rating and zinc-plated alloy steel construction address critical industrial fastening challenges. The fully threaded metric design with coarse 1.25mm pitch provides superior holding power in metal assemblies, machinery frames, and structural applications where vibration resistance is paramount. The hex drive style allows for high-torque installation without cam-out, while the flat head profile creates seamless surfaces in countersunk holes. Engineered to DIN 7991 specifications, these screws deliver consistent performance in automotive, construction, and heavy equipment sectors where high tensile strength and corrosion protection are essential for operational safety and longevity.
Specification Summary & Compliance
Manufactured to precise metric dimensions with Class 6g thread fit tolerance ensuring compatibility with standard M8 nuts and threaded holes. The fastener meets DIN 7991 manufacturing standards and demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand thread direction and coarse thread spacing follow international metric threading conventions for reliable interchangeability in global industrial applications.
