S-91280A889 M20 x 70 mm ISO 4014, DIN 931, SAE J1199, ISO 898 Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Medium-Strength Metric Class 8.8 Steel Hex Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with zinc plating for extended service life in harsh industrial environments
- High tensile strength (110,000 psi) and Class 8.8 rating ensure reliable performance under heavy loads
- Rockwell C21 hardness provides excellent wear resistance and durability
- Coarse 2.5mm pitch thread enables faster assembly and better vibration resistance
- Partially threaded design with 46mm minimum thread length offers optimal grip range and clamping force
- External hex drive allows for high-torque installation with standard tools
- Class 6h thread fit ensures precise mating with nuts and threaded components
Professional Applications & Engineering Value
This M20 hex head screw delivers exceptional engineering value for demanding industrial applications. The Class 8.8 steel construction combined with zinc plating provides critical protection against corrosion in manufacturing, construction, and machinery assembly. The coarse metric thread with 2.5mm pitch ensures rapid installation while maintaining vibration resistance, significantly reducing assembly time in production lines. The partially threaded design concentrates clamping force where needed most, preventing joint loosening in high-stress applications. Meeting ISO 4014 and DIN 931 standards, this fastener guarantees dimensional consistency and interchangeability across global engineering projects, making it an ideal choice for structural connections, equipment mounting, and heavy-duty assemblies requiring reliable, high-strength fastening solutions.
Specification Summary & Compliance
This M20 x 2.5mm hex head screw features precise Class 6h thread fit tolerance and 70mm overall length with 46mm minimum thread engagement. Manufactured to ISO 4014, DIN 931, and SAE J1199 specifications, ensuring dimensional accuracy and mechanical properties. The fastener is fully RoHS 3 (2015/863/EU) compliant and REACH (EC 1907/2006) compliant, meeting the latest environmental and safety regulations for industrial components.
