S-91280A048 M4 x 40 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
- Exceptional load-bearing capacity with 110,000 psi tensile strength for reliable performance in demanding applications
- Superior corrosion resistance and durability thanks to high-grade steel construction with Rockwell C21 hardness
- Optimized for quick installation with external hex drive design providing secure tool engagement
- Maximum thread engagement and holding power through fully threaded 40mm length with coarse 0.7mm pitch
- Precise dimensional accuracy ensured by Class 6g thread fit for consistent assembly performance
- Comprehensive regulatory compliance meeting international ISO 4017/DIN 933 standards and environmental regulations
- Versatile industrial application with right-hand metric threading compatible with standard components
Professional Applications & Engineering Value
This M4 hex head screw delivers critical engineering advantages in industrial fastening applications where vibration resistance and structural integrity are paramount. The Class 8.8 steel construction provides optimal strength-to-weight ratio, while the fully threaded design ensures maximum clamping force distribution across the entire 40mm length. The coarse pitch threading (0.7mm) facilitates rapid assembly in production environments and maintains secure fastening even under dynamic loads. The external hex drive configuration allows for high-torque installation with standard tools, making these metric fasteners ideal for machinery assembly, equipment manufacturing, and structural applications requiring reliable, high-strength connections that withstand industrial operating conditions.
Specification Summary & Compliance
This fastener features precision M4 x 0.7mm metric coarse threading with Class 6g tolerance for consistent fit and performance. Manufactured to ISO 4017/DIN 933 specifications, it ensures dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest substance restriction requirements for industrial applications worldwide.
