S-92198A809 5/8"-11 x 3 3/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• Exceptional load-bearing capacity thanks to an 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance under high stress.
• Secure and easy installation with an external hex drive and standard 15/16" head width, compatible with common wrenches for efficient assembly.
• Optimized for coarse thread applications using the 5/8"-11 UNC thread, providing excellent grip and vibration resistance in softer materials.
• Precise thread engagement with a Class 2A thread fit, ensuring consistent, reliable fastening without cross-threading issues.
• Versatile partial threading design on a 3 3/4" length, offering a strong shank section for enhanced shear strength where needed.
• Guaranteed quality and safety compliance by meeting ASME B18.2.1 standards and being RoHS 3 and REACH compliant for global industrial use.

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw is engineered to solve critical fastening challenges in demanding industrial applications. Its 18-8 stainless steel material provides excellent resistance to rust and corrosion, making it suitable for machinery, structural assemblies, and outdoor equipment exposed to moisture or chemicals. The coarse UNC thread and partial threading design enhance grip in materials like steel and aluminum, reducing the risk of loosening under vibration—a common issue in heavy machinery and construction. With an external hex drive and high 80,000 psi tensile strength, it ensures quick installation and dependable performance in high-stress environments, minimizing downtime and maintenance costs for engineers and procurement teams.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy and easy assembly. It is manufactured in accordance with ASME B18.2.1 specifications, ensuring consistent quality and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting safe and sustainable use in various industrial sectors.