S-91280A317 M16 x 70 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 load-bearing capacity with 110,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance and durability thanks to black steel construction and Rockwell C21 hardness
- Easy installation and removal with external hex drive design and coarse thread spacing for efficient assembly
- Precise thread engagement ensured by Class 6g thread fit and M16x2mm metric threading
- Versatile partial threading providing optimal grip in various material thicknesses
- Global compliance assurance meeting ISO 4014 standards for consistent quality and performance
- Environmental responsibility with RoHS 3 and REACH compliance for sustainable operations
Professional Applications & Engineering Value
These M16 hex head screws deliver critical engineering solutions for heavy-duty industrial applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction provides excellent strength-to-weight ratio, while the partially threaded design allows for precise clamping force distribution across joint interfaces. The coarse metric threading ensures rapid installation in structural steel, machinery frames, and equipment assemblies, reducing assembly time and labor costs. With external hex drive compatibility, these fasteners accommodate standard tools for maintenance accessibility in confined spaces. The combination of 110,000 psi tensile strength and Rockwell C21 hardness makes them ideal for applications subject to dynamic loads and environmental stressors, from construction equipment to industrial manufacturing systems.
Specification Summary & Compliance
Manufactured to ISO 4014 specifications (equivalent to DIN 931) with Class 6g thread fit tolerance for precise engagement. The M16x2mm coarse thread configuration ensures optimal performance in industrial settings. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental responsibility and workplace safety standards. The 70mm length with 38mm minimum thread length provides versatile application coverage while maintaining structural integrity across the fastener's entire service life.
