S-90585A834 5/8"-11 x 2" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments due to 316 Stainless Steel construction and passivated finish
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications
• Precision thread engagement with Class 3A fit and UNC coarse threads ensuring reliable fastening in demanding conditions
• Optimized drive efficiency through 3/8" hex drive design providing secure tool engagement and reduced cam-out risk
• Flush mounting capability with standard 82° countersink angle and flat head profile for clean, professional installations
• Full-threaded design maximizing grip length and load distribution across the entire 2" fastener length
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This 316 Stainless Steel Flat Head Screw delivers critical performance advantages in corrosive and high-stress environments where fastener failure is not an option. The combination of passivated finish and marine-grade stainless steel provides exceptional protection against chemical exposure, saltwater corrosion, and industrial atmospheres. Engineered with Class 3A thread fit and UNC coarse threads, these screws maintain precise tolerances in vibration-prone applications while facilitating quicker installation in production environments. The 82° countersink angle and flat head design ensure seamless integration in machinery, structural assemblies, and marine equipment where flush surfaces are essential. These fully threaded fasteners distribute clamping force evenly, making them ideal for critical joints in chemical processing equipment, offshore platforms, and food processing machinery where both corrosion resistance and mechanical reliability are paramount.

Specification Summary & Compliance

This precision fastener maintains Class 3A thread fit tolerance per ASME B18.3 specifications with 5/8"-11 UNC coarse threads and complete threading along the 2" length. Manufacturing compliance includes ASME B18.3 standards for dimensional accuracy and mechanical properties. Environmental regulatory compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring restricted substance compliance for international industrial applications.