S-92800A423 5/8"-18 x 4" 18-8 Stainless Steel Hex Head Screws
18-8 Stainless 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 18-8 Stainless Steel construction, ideal for harsh environments and chemical exposure
- High tensile strength of 80,000 psi ensures reliable performance under heavy loads and mechanical stress
- Precision Class 2A thread fit guarantees consistent engagement and reduces the risk of cross-threading during assembly
- External hex drive design provides excellent torque transmission for secure, efficient installation with standard tools
- Fine UNF thread spacing offers enhanced vibration resistance and improved clamping force retention
- Full threading along the 4" length allows for maximum adjustability and uniform load distribution
- Compliance with RoHS 3 and REACH regulations ensures environmental safety and meets international industrial standards
Professional Applications & Engineering Value
This 5/8"-18 UNF hex head screw is engineered to address critical challenges in demanding industrial settings. The 18-8 Stainless Steel material provides exceptional corrosion resistance, making it suitable for applications exposed to moisture, chemicals, or outdoor elements. Its fine UNF thread and Class 2A fit deliver precise alignment and secure fastening, minimizing loosening from vibrations in machinery, automotive assemblies, and structural frameworks. The external hex drive ensures efficient torque application, reducing installation time and preventing tool slippage. With a Rockwell B70 hardness and 80,000 psi tensile strength, it withstands high-stress conditions, offering long-term reliability in construction, manufacturing, and marine environments where durability and compliance with RoHS and REACH are paramount.
Specification Summary & Compliance
This screw adheres to UNF thread standards with a Class 2A thread fit for consistent dimensional accuracy. It features a fine thread spacing of 18 TPI, a right-hand thread direction, and is fully threaded along its 4-inch length. Manufactured from 18-8 Stainless Steel, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and suitable for global industrial applications requiring high mechanical performance and environmental safety.
