S-91280A191 M16 x 210 mm ISO 4014, DIN 931 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
- Exceptional durability with Class 8.8 strength grade, providing reliable performance in high-stress industrial environments.
- Superior corrosion resistance from zinc plating, extending service life in harsh or outdoor conditions.
- Easy installation and removal with external hex drive and coarse threading, reducing assembly time and labor costs.
- Precise fit and secure fastening due to Class 6h thread fit, minimizing loosening and vibration failures.
- Optimized load distribution with partially threaded design, concentrating strength where needed for structural integrity.
- High tensile strength of 110,000 psi, ensuring dependable holding power in heavy-duty applications.
- Compliance with international standards like DIN 931 and ISO 4014, guaranteeing quality and interchangeability.
Professional Applications & Engineering Value
This M16 hex head screw is engineered to address critical challenges in industrial and construction settings, where vibration resistance and long-term reliability are paramount. The Class 8.8 steel construction, combined with a Rockwell C21 hardness, ensures it withstands heavy loads and repetitive stress without deformation. The coarse metric thread with a 2 mm pitch facilitates quick assembly in tough materials, reducing the risk of cross-threading. Zinc plating offers a protective barrier against moisture and chemicals, making it ideal for outdoor machinery, structural frameworks, and equipment that demands corrosion-resistant fasteners. Its partially threaded shank allows for controlled clamping force, preventing joint slippage in dynamic applications.
Specification Summary & Compliance
This fastener adheres to ISO 4014/DIN 931 specifications, ensuring dimensional accuracy with a Class 6h thread fit for precise engagement. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, confirming it is free from hazardous substances. Manufactured to metric coarse thread standards with a right-hand direction, it guarantees consistency and safety in professional use.
