S-92210A130 5-40 x 5/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish for long-lasting performance in harsh industrial environments.
• Superior mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness to withstand high-stress applications without failure.
• Precise, reliable fastening with Class 3A thread fit and UNC coarse threads ensuring secure engagement and vibration resistance.
• Efficient installation and removal via the 5/64" hex drive, providing superior torque transmission and reducing tool slippage.
• Optimal flush mounting with an 82° countersink angle and standard flat head profile for a smooth, seamless finish in assembled products.
• Full-threaded design for maximum grip and load distribution along the entire 5/8" length, enhancing joint integrity.
• Compliance with industry standards including ASME B18.3, RoHS 3, and REACH, ensuring safety, quality, and environmental responsibility.

Professional Applications & Engineering Value

This 5-40 UNC flat head screw is engineered to address critical fastening challenges in demanding sectors like machinery assembly, electronics enclosures, and automotive components. The 18-8 stainless steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, reducing maintenance costs and downtime. The hex drive design allows for high-torque application, minimizing cam-out risks in confined spaces. With a Class 3A thread fit and coarse thread spacing, it ensures quick assembly and reliable performance under dynamic loads, making it ideal for applications requiring robust, fully threaded fasteners that maintain alignment and prevent loosening. The 82° countersink angle facilitates a clean, flush fit, essential for aerodynamic or safety-critical surfaces.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including Class 3A thread fit for tight tolerances and UNC thread type with coarse spacing. It is manufactured in compliance with ASME B18.3 specifications, ensuring consistent quality and interchangeability. The product is also certified RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it meets stringent environmental and safety regulations for hazardous substances.