S-91280A423 M7 x 40 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, extending service life in harsh industrial environments
- High tensile strength of 110,000 psi ensures reliable performance under heavy loads and vibration
- Class 8.8 strength grade provides excellent durability for demanding mechanical applications
- Fully threaded design offers maximum grip and holding power across the entire 40mm length
- Precise Class 6h thread fit guarantees smooth installation and secure fastening
- External hex head design enables easy installation with standard tools and high torque application
- Compliance with ISO 4017/DIN 933 standards ensures consistent quality and international interoperability
Professional Applications & Engineering Value
This M7 hex head screw delivers exceptional engineering value through its Class 8.8 steel construction and zinc plated finish, specifically designed to address industrial fastening challenges. The coarse thread with 1mm pitch provides superior resistance to vibration loosening in machinery, automotive assemblies, and structural applications. The fully threaded metric screw design ensures maximum thread engagement, distributing stress evenly to prevent joint failure. With Rockwell C21 hardness and precise Class 6h thread fit, it maintains dimensional stability under dynamic loads while facilitating quick assembly in production environments. The external hex drive allows for high-torque installation without stripping, making it ideal for maintenance and manufacturing applications requiring reliable, high-strength fasteners.
Specification Summary & Compliance
This fastener features M7 x 1 mm coarse thread with Class 6h thread fit tolerance according to ISO metric standards. Manufactured to meet ISO 4017/DIN 933 specifications and ISO 898 mechanical properties for Class 8.8 strength grade. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.
