S-91280A554 M8 x 70 mm ISO 4014, DIN 931, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex 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
- Enhanced corrosion resistance with zinc plating for extended service life in demanding environments
- Superior mechanical strength with Class 8.8 rating and 110,000 psi tensile strength for high-stress applications
- Optimized partial threading design providing 22mm of engaged thread for secure fastening and material savings
- Precision external hex drive ensuring reliable torque transmission and easy installation with standard tools
- Durable Rockwell C21 hardness maintaining structural integrity under repeated loads and vibrations
- Industry-standard compatibility with coarse M8x1.25 metric thread for broad interchangeability
- Comprehensive compliance assurance meeting international quality and environmental standards
Professional Applications & Engineering Value
This M8 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and zinc plated finish, specifically engineered to address common industrial challenges. The partially threaded design with precise 22mm thread length prevents material waste while ensuring maximum grip strength in assembly applications. The external hex drive provides superior torque transmission for high-tension fastening in machinery, structural frameworks, and equipment manufacturing. With its coarse metric thread and Class 6h thread fit, this fastener maintains reliable performance in vibrating environments while resisting loosening. Ideal for automotive, construction, and industrial machinery applications where high tensile strength and corrosion protection are critical for long-term reliability.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 6h thread fit tolerance and M8x1.25 coarse thread specifications. Complies with international standards including ISO 4014, DIN 931, and SAE J1199 for consistent quality and performance. Meets environmental regulations with RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) certification, ensuring safe use across global industrial markets. The manufacturing process adheres to ISO 898 mechanical property requirements for guaranteed reliability.
