S-90585A692 1/2"-13 x 2 1/4" 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 with passivated finish
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for demanding applications
• Precise thread engagement ensured by Class 3A thread fit and UNC coarse threading for reliable fastening
• Optimized drive performance through 5/16" hex drive design providing secure tool engagement and torque transmission
• Flush mounting capability with standard 82° countersink angle flat head profile for smooth surface finishes
• Full-length threading offering maximum grip length and versatility across various material thicknesses
• Regulatory compliance assurance meeting ASME B18.3 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

These 316 stainless steel flat head screws deliver exceptional performance in corrosive and high-strength applications where material integrity is critical. The combination of 70,000 psi tensile strength and Rockwell B55 hardness ensures reliable fastening in structural assemblies, marine equipment, chemical processing systems, and food processing machinery. The passivated finish enhances the natural corrosion resistance of 316 stainless steel, providing extended service life in moisture-rich and chemically aggressive environments. The UNC coarse threading with Class 3A fit guarantees precise engagement while the hex drive configuration enables high-torque installation without cam-out issues. These fully threaded flat head screws are engineered to maintain clamp force integrity in vibration-prone applications, making them ideal for industrial machinery, offshore structures, and processing equipment requiring durable fastening solutions.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse thread profile (1/2"-13). Complies with ASME B18.3 specifications for dimensional accuracy and mechanical properties. Meets environmental compliance standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations. Features include 82° standard countersink angle, fully threaded design, and right-hand thread direction for standardized installation procedures across industrial applications.