S-91263A914 M8 x 18 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 load-bearing capacity with Class 10.9 strength grade and 120,000 PSI tensile strength for reliable performance in demanding applications
- Superior corrosion resistance provided by zinc-plated alloy steel construction, extending service life in harsh industrial environments
- Precise installation and removal enabled by 5mm hex drive design, ensuring secure tool engagement and reducing stripping risks
- Optimal material penetration through coarse 1.25mm thread pitch, facilitating faster assembly in various materials
- Maximum thread engagement with fully threaded design, distributing stress evenly along the entire fastener length
- Consistent flush mounting with standard flat head profile and 90° countersink angle for seamless surface finishes
- Regulatory compliance assurance meeting DIN 7991 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These M8 flat head screws deliver critical engineering solutions where high tensile strength and reliable fastening are paramount. The Class 10.9 zinc-plated alloy steel construction provides exceptional resistance to vibration loosening and environmental degradation, making them ideal for heavy machinery, automotive assemblies, and structural applications. The fully threaded metric design with coarse 1.25mm pitch ensures rapid installation and superior holding power in both soft and hard materials. With Rockwell C32 hardness and precise Class 6g thread fit, these fasteners maintain dimensional stability under extreme loads, preventing thread stripping and ensuring consistent clamping force throughout the product lifecycle.
Specification Summary & Compliance
Manufactured to exact metric dimensions with M8 x 1.25mm coarse threads meeting Class 6g tolerance standards. The 18mm length and 16mm head diameter provide optimal proportions for standard applications. These flat head screws comply with DIN 7991 manufacturing specifications and demonstrate full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring they meet international safety and sustainability requirements for industrial use.
