S-92210A717 1/2"-13 x 1 3/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh environments.
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty applications.
• Precise, secure fastening ensured by Class 3A thread fit and UNC coarse threads, reducing the risk of cross-threading and loosening.
• Efficient installation and removal with a 5/16" hex drive, providing high torque transfer and reducing tool slippage.
• Optimal flush mounting due to the standard flat head profile and 82° countersink angle, creating a smooth surface finish.
• Full thread engagement along the 1 3/8" length for maximum grip and load distribution in assembled components.
• Regulatory compliance and reliability meeting ASME B18.3, RoHS 3, and REACH standards for safe, industry-approved use.

Professional Applications & Engineering Value

This 1/2"-13 UNC flat head screw is engineered to address critical challenges in industrial assembly, such as vibration resistance, environmental durability, and installation efficiency. The 18-8 stainless steel material, combined with a passivated finish, provides excellent protection against corrosion, making it suitable for applications in marine, chemical processing, and outdoor equipment. The hex drive design allows for high-torque application, minimizing cam-out and ensuring secure fastening in high-stress environments. With a Class 3A thread fit and coarse threading, these screws offer quick assembly and reduced risk of stripping, which is vital in production lines and machinery maintenance. Fully threaded for consistent clamping force, they are ideal for securing metal panels, structural frames, and heavy machinery components where reliability and longevity are paramount.

Specification Summary & Compliance

This fastener adheres to inch system measurements with a 1/2"-13 UNC thread size and Class 3A precision fit, ensuring dimensional accuracy and interchangeability. It is manufactured in compliance with ASME B18.3 specifications and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming its suitability for global industrial use without hazardous substances.