S-90128A278 M8 x 40 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 reliability with Class 12.9 rating and 170,000 PSI tensile strength, ideal for high-stress applications.
- Superior corrosion resistance due to zinc-plated alloy steel construction, extending service life in harsh environments.
- Precise and secure installation enabled by a 6mm hex drive and standard socket head, reducing slippage and tool wear.
- Optimized thread engagement with M8 x 1.25mm coarse threads and Class 5g6g fit, ensuring quick assembly and vibration resistance.
- Versatile partial threading for flexibility in clamping and alignment, suitable for varied industrial setups.
- High durability and wear resistance from Rockwell C37 hardness, minimizing deformation under heavy loads.
- Compliance with international standards including DIN 912 and ISO 4762, guaranteeing consistent quality and interchangeability.
Professional Applications & Engineering Value
This M8 socket head cap screw is engineered to address critical challenges in heavy-duty industrial applications, such as machinery assembly, automotive systems, and construction equipment. The zinc-plated alloy steel material provides excellent corrosion protection, reducing maintenance costs in humid or corrosive environments. With a coarse thread pitch of 1.25mm and Class 5g6g thread fit, it offers rapid installation and reliable clamping force, preventing loosening from vibrations. The partially threaded design allows for precise adjustment and secure fastening in dynamic loads, while the high-strength Class 12.9 rating ensures it withstands extreme tensile and shear stresses, enhancing safety and longevity in demanding engineering projects.
Specification Summary & Compliance
This screw features precise metric thread dimensions with M8 x 1.25mm coarse threads and a Class 5g6g thread fit for accurate tolerance. It adheres to DIN 912 and ISO 4762 standards for dimensional consistency and performance. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring environmental safety and regulatory adherence in global markets.
