S-93190A603 5/16"-18 x 4 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh environments and chemical exposure
• High tensile strength of 70,000 PSI ensures reliable load-bearing capacity and joint integrity under stress
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Class 2A thread fit offers consistent, easy assembly while maintaining secure fastening
• Fully threaded design allows for maximum grip and adjustability across the entire 4-1/2" length
• External hex drive and hex head enable quick installation and high torque application with standard tools
• Coarse UNC threading facilitates faster installation and reduced cross-threading risks in industrial settings

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw in 316 stainless steel delivers exceptional performance in demanding applications where corrosion resistance and mechanical strength are critical. The coarse thread design and fully threaded shank ensure rapid assembly and uniform stress distribution, making it ideal for structural frameworks, marine equipment, and chemical processing machinery. Its external hex drive allows for high-torque tightening without slippage, reducing installation time and improving workplace efficiency. Engineered to withstand extreme conditions, this fastener prevents failure in high-moisture or corrosive environments, providing long-term reliability and reducing maintenance costs for industrial operations.

Specification Summary & Compliance

This hex head screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for consistent dimensional accuracy. It complies with ASME B18.2.1 manufacturing standards and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe and sustainable use in global markets.