S-91280A127 M4 x 6 mm ISO 4017, DIN 933, 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 harsh industrial environments
- High tensile strength of 110,000 PSI ensures reliable performance in demanding applications
- Class 8.8 strength rating provides consistent mechanical properties for heavy-duty fastening
- Fully threaded design offers maximum grip and load distribution along the entire length
- External hex drive enables quick installation and removal with standard tools
- Rockwell C21 hardness maintains thread integrity and prevents stripping during torque application
- Coarse thread pitch allows for faster assembly and better performance in soft materials
Professional Applications & Engineering Value
These M4 hex head screws deliver exceptional engineering value through their Class 8.8 steel construction and zinc plating finish, specifically designed to address common industrial fastening challenges. The fully threaded metric coarse design ensures maximum engagement in various materials, while the external hex drive provides superior torque transmission without cam-out issues. Engineered to ISO 4017/DIN 933 standards, these fasteners solve critical application problems in machinery assembly, equipment manufacturing, and structural frameworks where vibration resistance and long-term reliability are paramount. The combination of high tensile strength and corrosion-resistant zinc plating makes them ideal for industrial environments requiring durable, maintenance-free fastening solutions.
Specification Summary & Compliance
Manufactured to precise Class 6h thread fit tolerance with M4 x 0.7mm coarse thread specifications, these hex head screws comply with ISO 4017, DIN 933, and ISO 898 manufacturing standards. The fasteners are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors while maintaining consistent dimensional accuracy and mechanical performance.
