S-91280A055 M5 x 25 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
- Superior load-bearing capacity with Class 8.8 strength rating and 110,000 psi tensile strength for reliable performance in demanding applications
- Enhanced corrosion resistance thanks to the black steel finish, extending service life in industrial environments
- Easy installation and removal with external hex drive and 8mm head width, compatible with standard tools
- Secure fastening in various materials due to coarse M5-0.8 thread pitch and Class 6g fit for optimal grip
- Full-length threading ensures maximum thread engagement and uniform stress distribution along the entire 25mm length
- Consistent dimensional accuracy manufactured to ISO 4017/DIN 933 standards for interchangeability and precise assembly
- Environmental compliance meeting RoHS 3 and REACH regulations for safe use in regulated industries
Professional Applications & Engineering Value
This M5 hex head screw delivers exceptional engineering value in industrial applications where vibration resistance and structural integrity are critical. The Class 8.8 steel construction provides reliable strength for machinery assembly, automotive components, and equipment manufacturing, while the coarse thread pitch ensures rapid installation and superior holding power in softer materials. The fully threaded design distributes clamping forces evenly, preventing loosening under dynamic loads. With Rockwell C21 hardness and external hex drive, these metric hex screws withstand repeated torque applications without stripping, making them ideal for maintenance-heavy environments where durability and consistent performance are paramount.
Specification Summary & Compliance
Manufactured to ISO 4017 and DIN 933 standards with Class 6g thread fit tolerance for precise dimensional accuracy. The M5-0.8 coarse thread configuration and 25mm length provide standardized compatibility across industrial applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe usage in global markets. The right-hand thread direction and fully threaded design maintain consistency with international fastener specifications.
