S-95327A581 M8 x 55 mm ISO 4014, DIN 931 High-Strength Metric Class 10.9 Steel Hex Head Screws
High-Strength Metric Class 10.9 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 tensile strength of 150,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Superior corrosion resistance with zinc yellow-chromate plating extends service life in harsh or outdoor environments.
- High hardness rating (Rockwell C32) provides excellent wear resistance and durability under repeated loads.
- Precision Class 6h thread fit guarantees secure, vibration-resistant connections in industrial assemblies.
- Partially threaded design allows for controlled clamping force and easier alignment in structural applications.
- External hex drive head enables quick installation and removal with standard tools, improving assembly efficiency.
- Compliance with ISO 4014/DIN 931 standards ensures consistent quality and interchangeability in global projects.
Professional Applications & Engineering Value
This M8 hex head screw is engineered for demanding industrial environments where reliability is critical. The Class 10.9 steel construction and coarse thread pitch of 1.25 mm provide robust holding power in heavy machinery, automotive frames, and construction equipment. The zinc yellow-chromate plating offers a protective barrier against rust and chemical exposure, making it ideal for outdoor or high-moisture settings. With a partially threaded shank, it ensures precise load distribution and reduces the risk of thread stripping in soft materials. These metric bolts meet ISO 4014/DIN 931 specifications, delivering consistent performance in OEM and MRO applications that require high tensile strength and dimensional accuracy.
Specification Summary & Compliance
This fastener features a Class 6h thread fit for precise engagement and is manufactured to ISO 4014/DIN 931 standards, ensuring dimensional consistency. The M8 x 1.25 mm coarse thread and 55 mm length adhere to metric system requirements, while the zinc yellow-chromate finish provides RoHS and REACH compliance for environmental safety. It is suitable for use in applications governed by ASME and other international mechanical codes.
