S-92198A570 1/4"-20 x 7" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Rockwell B70 hardness provides superior durability and resistance to wear during installation and use
• UNC coarse threading with Class 2A fit enables faster assembly and reduced cross-threading risks
• Partial threading design offers optimal grip strength while minimizing material usage
• External hex drive with 7/16" head width allows for high-torque installation using standard tools
• Full compliance with industry standards including ASME B18.2.1, RoHS 3, and REACH regulations

Professional Applications & Engineering Value

This 1/4"-20 x 7" hex head screw delivers exceptional engineering value across demanding industrial applications. The 18-8 stainless steel composition provides superior corrosion resistance, making it ideal for outdoor equipment, marine environments, and chemical processing facilities where moisture and corrosive elements are concerns. The UNC coarse thread configuration ensures rapid installation in various materials while the partial threading design concentrates clamping force where needed most. With an external hex drive and substantial 7-inch length, this fastener excels in structural assemblies, machinery frames, and heavy equipment where vibration resistance and long-term reliability are critical. The combination of 80,000 psi tensile strength and Rockwell B70 hardness ensures these screws maintain integrity under sustained mechanical stress, reducing maintenance frequency and downtime in industrial operations.

Specification Summary & Compliance

This hex head screw features precise 1/4"-20 UNC coarse threads with Class 2A thread fit tolerance for consistent engagement and reliable performance. The fastener is manufactured to ASME B18.2.1 specifications, ensuring dimensional accuracy and interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations confirms environmental responsibility and restricted substance adherence. The partial threading extends for a minimum of 1 inch, while the overall 7-inch length and external hex drive with 7/16" head width provide optimal installation characteristics for industrial applications.