S-92210A742 1/2"-20 x 1" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel and passivated finish, ideal for harsh industrial environments.
• Exceptional strength and durability with 70,000 psi tensile strength and Rockwell B55 hardness for heavy-duty applications.
• Precise, reliable fastening due to Class 3A thread fit and UNF fine thread spacing, minimizing loosening under vibration.
• Efficient installation and flush finish enabled by the 82° countersink angle and 5/16" hex drive for a secure, clean appearance.
• Full thread engagement along the 1" length provides maximum grip and load distribution in assembled components.
• Guaranteed quality and compliance meeting ASME B18.3 standards, RoHS 3, and REACH regulations for safe, reliable use.
• Versatile right-hand threading ensures compatibility with standard assembly processes and tools.

Professional Applications & Engineering Value

This 1/2"-20 UNF Flat Head Screw is engineered to solve critical challenges in industrial settings where corrosion resistance, high tensile strength, and vibration resistance are paramount. The 18-8 Stainless Steel material, combined with a passivated finish, provides long-lasting protection against rust and chemical exposure, making it ideal for machinery, automotive, and marine applications. The Class 3A thread fit and fine thread spacing ensure a tight, secure connection that withstands dynamic loads and reduces the risk of fastener failure. With a flat head design and 82° countersink angle, it offers a flush surface finish, preventing snagging and improving safety in high-traffic areas. These features deliver reliable performance in demanding environments, enhancing the longevity and integrity of your assemblies.

Specification Summary & Compliance

This screw features precise Class 3A thread fit per UNF standards with a fine thread spacing for accurate engagement. It is manufactured in accordance with ASME B18.3 specifications, ensuring dimensional consistency and reliability. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, it meets environmental and safety standards for industrial use.