S-91280A219 M16 x 40 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 capability with 110,000 psi tensile strength, ensuring reliable performance in demanding applications
- Superior corrosion resistance and durability thanks to Class 8.8 steel construction and black finish
- Easy installation and removal with standard 24mm external hex head design for common tool compatibility
- Optimal thread engagement through fully threaded M16x2mm coarse pitch design for faster assembly
- Precise dimensional accuracy with Class 6g thread fit, guaranteeing consistent performance and interchangeability
- Enhanced mechanical properties from Rockwell C21 hardness, providing excellent wear resistance
- Global compliance assurance meeting ISO 4017, RoHS 3, and REACH standards for international project suitability
Professional Applications & Engineering Value
These M16 hex head screws deliver exceptional engineering value in heavy-duty industrial applications where vibration resistance and structural integrity are critical. The Class 8.8 steel construction provides the optimal balance of strength and ductility, preventing brittle failure under dynamic loads. The fully threaded metric design with coarse 2mm pitch ensures maximum thread engagement across the entire 40mm length, distributing clamping forces evenly and resisting loosening in high-vibration environments. The external hex drive with 24mm head width accommodates standard wrenches for efficient installation in confined spaces. These black steel fasteners are engineered for machinery assembly, structural steel connections, and equipment manufacturing where high tensile strength and reliable performance are non-negotiable requirements.
Specification Summary & Compliance
Manufactured to ISO 4017 specifications (equivalent to DIN 933) with Class 6g thread tolerance for precision fit. The metric coarse thread (M16x2mm) and right-hand threading follow international standards. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The Class 8.8 strength rating and Rockwell C21 hardness verify mechanical properties suitable for industrial applications requiring consistent performance and reliability.
