S-90447A720 M12 x 180 mm DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws
High-Strength Metric Class 10.9 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
- Exceptional load-bearing capacity with Class 10.9 strength grade, ensuring reliable performance in high-stress industrial environments.
- Superior corrosion resistance from the black steel construction, extending service life in demanding applications.
- Easy installation and removal thanks to the external hex drive and coarse M12 x 1.75mm thread, reducing assembly time.
- Optimized weight distribution with partial threading, minimizing material use while maintaining structural integrity.
- High hardness rating of Rockwell C32, providing excellent wear resistance and durability under repetitive loads.
- Precise thread fit with Class 6g tolerance, ensuring secure fastening and vibration resistance in machinery.
- Compliance with international standards including DIN 931, guaranteeing consistent quality and interchangeability.
Professional Applications & Engineering Value
This M12 hex head screw is engineered to address critical fastening challenges in heavy-duty sectors like construction, automotive assembly, and industrial machinery. The Class 10.9 steel composition delivers a tensile strength of 150,000 psi, preventing failure under dynamic loads. Its partially threaded design concentrates strength where needed, reducing stress concentration points. The coarse metric thread with 1.75mm pitch ensures quick engagement and high resistance to loosening in vibrating environments. Coupled with a black surface finish, it offers added protection against rust, making it ideal for outdoor or humid conditions. By adhering to DIN 931 specifications, this screw provides reliable performance in bolted joints requiring precise clamp load maintenance.
Specification Summary & Compliance
This fastener meets Class 6g thread fit tolerances per ISO metric standards, ensuring dimensional accuracy. It conforms to DIN 931 for hex head screw manufacturing, with a right-hand thread direction and M12 x 1.75mm coarse thread. Regulatory compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming it is free from hazardous substances and safe for industrial use.
