S-92198A129 1/2"-13 x 20" ASME B18.2.1 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 long-term durability.
- High tensile strength of 80,000 psi ensures reliable performance in heavy-duty and high-stress applications.
- Rockwell B70 hardness provides excellent wear resistance and maintains structural integrity under load.
- Coarse UNC thread with Class 2A fit offers faster assembly and secure fastening, reducing the risk of cross-threading.
- Partially threaded design allows for precise clamping force control and vibration resistance in structural connections.
- External hex drive and 3/4" head width enable easy installation and removal with standard tools, improving workflow efficiency.
- Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees adherence to industry standards and environmental safety regulations.
Professional Applications & Engineering Value
This 1/2"-13 UNC hex head screw is engineered to address critical fastening challenges in industrial settings. The 18-8 Stainless Steel material provides exceptional resistance to rust and corrosion, making it suitable for outdoor, marine, and chemical-exposed applications. Its coarse thread and Class 2A thread fit ensure quick, reliable engagement in materials like steel and aluminum, minimizing installation time and preventing thread stripping. The partially threaded shank concentrates clamping force where needed, reducing loosening from vibrations in machinery, construction frameworks, and transportation equipment. With an external hex drive and substantial 20" length, it offers versatility for heavy structural bolting, ensuring long-term stability and safety in demanding engineering projects.
Specification Summary & Compliance
This screw features a 1/2"-13 UNC coarse thread with Class 2A dimensional accuracy for consistent fit and performance. It is manufactured in accordance with ASME B18.2.1 specifications, ensuring interchangeability and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use worldwide.
