S-91280A534 M8 x 25 mm ISO 4017, DIN 933, SAE J1199, ISO 898 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
- Superior corrosion resistance with zinc plating that protects against rust and extends service life in harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration, reducing failure risks
- Class 8.8 strength grade provides excellent durability and load-bearing capacity for demanding mechanical applications
- Fully threaded coarse pitch design offers faster installation and superior grip in various materials
- External hex drive and hex head allow for easy tightening with standard tools, improving assembly efficiency
- Precision Class 6h thread fit ensures consistent engagement and reduces cross-threading issues
- Compliance with ISO 4017, DIN 933, and SAE J1199 guarantees interchangeability and meets international quality standards
Professional Applications & Engineering Value
Engineered for industrial and mechanical assemblies, these M8 hex head screws deliver exceptional reliability in high-stress environments. The Class 8.8 steel construction, combined with Rockwell C21 hardness, resists deformation under load, while the zinc plating provides a robust barrier against moisture and chemicals. The fully threaded coarse pitch (M8 x 1.25mm) ensures rapid installation and secure fastening in metals, plastics, and composites, minimizing assembly time. With an external hex drive, these screws offer straightforward torque application, making them ideal for machinery, automotive, and structural applications where durability and compliance with ISO 4017/DIN 933 are critical.
Specification Summary & Compliance
This M8 x 1.25mm x 25mm hex head screw features a Class 6h thread fit for precise tolerance and meets ISO 4017, DIN 933, and SAE J1199 manufacturing specifications. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and suitability for global industrial use.
