S-90585A712 1/2"-13 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
• Precision thread fit with Class 3A UNC coarse threads ensuring secure, vibration-resistant fastening
• Full threading design provides maximum grip length and uniform load distribution across the entire fastener
• Standard 82° countersink angle enables flush mounting in various materials without protrusion
• Hex drive compatibility with 5/16" drive size for easy installation and high-torque applications
• Regulatory compliance assurance meeting ASME B18.3 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 316 stainless steel flat head screws deliver exceptional performance where corrosion resistance and mechanical integrity are critical. The combination of Class 3A UNC coarse threads and fully threaded design ensures reliable fastening in vibration-prone applications while the passivated finish enhances surface durability against chemical exposure. Ideal for marine equipment, chemical processing plants, and food processing machinery, these hex drive screws with standard 82° countersink provide secure, flush mounting in structural components, machinery frames, and equipment assemblies where surface protrusion must be minimized. The 1/2"-13 thread size with coarse spacing offers quick installation and superior holding power in both metallic and non-metallic substrates.

Specification Summary & Compliance

This flat head screw maintains precise dimensional tolerances with Class 3A thread fit according to UNC standards and features a 0.938" head diameter with controlled tolerance. Manufacturing complies with ASME B18.3 specifications for consistent quality and performance. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring restricted substance adherence for global industrial applications.