S-91290A422 M8 x 18 mm DIN 912, ISO 4762 Alloy Steel Socket Head Screws
Alloy Steel Socket 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 strength and durability with Class 12.9 rating and 170,000 psi tensile strength, ideal for high-stress industrial applications.
- Superior corrosion resistance due to black-oxide coating on alloy steel, extending service life in harsh environments.
- Precise and secure installation enabled by the 6mm hex socket drive, preventing stripping and ensuring reliable torque transmission.
- Optimal thread engagement with M8 coarse thread (1.25mm pitch) and Class 5g6g fit, facilitating quick assembly and vibration resistance.
- Full thread coverage along the 18mm length provides maximum grip and load distribution in connected components.
- Consistent performance and interchangeability guaranteed by compliance with DIN 912 and ISO 4762 standards.
- Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements.
Professional Applications & Engineering Value
This M8 socket head cap screw is engineered to address critical challenges in heavy-duty machinery, automotive assemblies, and precision equipment. The black-oxide alloy steel construction combats rust and wear, while the Class 12.9 strength ensures integrity under extreme loads and vibrations. The coarse metric thread (M8 x 1.25mm) allows for rapid installation and reduced cross-threading risks, and the fully threaded design enhances clamping force across the entire 18mm length. With a hex drive for tamper-resistant tightening, it delivers reliable performance in applications demanding high torque and fatigue resistance, such as industrial robots, conveyor systems, and structural frameworks.
Specification Summary & Compliance
This screw features an M8 x 1.25mm coarse thread with Class 5g6g tolerance for precise fit, and is fully threaded over an 18mm shank. It meets DIN 912 / ISO 4762 specifications for dimensional accuracy and mechanical properties, including a tensile strength of 170,000 psi and hardness of Rockwell C37. The product is certified RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, ensuring adherence to environmental and safety standards.
