S-91280A988 M16 x 20 mm ISO 4017, DIN 933 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 and Class 8.8 grade, ensuring reliable performance in demanding applications
- Superior corrosion resistance from zinc plating, extending service life in harsh industrial environments
- Optimized thread engagement with M16x2mm coarse thread spacing and Class 6h fit, providing secure fastening and vibration resistance
- High durability with Rockwell C21 hardness, maintaining structural integrity under repeated stress
- Easy installation and removal using standard 24mm external hex drive, reducing assembly time and tool requirements
- Full thread coverage along the 20mm length, offering maximum grip and uniform stress distribution
- Global compliance assurance meeting ISO 4017 standards and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
Engineered for heavy-duty industrial applications, these M16 hex head screws deliver critical performance where structural integrity is paramount. The Class 8.8 steel construction provides exceptional tensile strength for construction frameworks, machinery assembly, and infrastructure projects requiring reliable load-bearing capabilities. The fully threaded design with metric coarse thread spacing ensures maximum surface contact and resistance to loosening under vibration, while the zinc plating offers essential protection against corrosion in outdoor or chemically aggressive environments. These ISO 4017 compliant fasteners solve common engineering challenges by combining precise Class 6h thread fit with standardized dimensions, enabling seamless integration into existing metric systems and reducing installation complexities.
Specification Summary & Compliance
This M16x2mm hex head screw maintains precise Class 6h thread tolerance according to metric standards, with fully threaded 20mm length and coarse thread pitch configuration. Manufacturing complies with ISO 4017 (equivalent to DIN 933) specifications for dimensional accuracy and mechanical properties. The product meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements, ensuring safe usage across regulated industries.
