S-92198A820 5/8"-11 x 7" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and in demanding structural applications.
• Rockwell B70 hardness provides superior durability and resistance to wear, extending the fastener's service life.
• Coarse UNC thread and Class 2A fit offer easier, faster assembly and reduced risk of cross-threading in field applications.
• External hex drive and hex head design allow for high-torque installation with standard tools, speeding up project timelines.
• Partially threaded shank provides an unthreaded bearing surface for improved clamping force and joint stability.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees quality, safety, and environmental responsibility for global industrial use.

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw is engineered to solve critical challenges in industrial applications where strength and corrosion resistance are paramount. The 18-8 Stainless Steel material inherently resists rust and chemical exposure, making it ideal for outdoor structures, marine equipment, and chemical processing plants. Its coarse thread design ensures quick, secure fastening even in materials prone to vibration or thermal expansion, while the partially threaded configuration concentrates clamping force for superior joint integrity. With an external hex drive, it supports high-torque installation, reducing assembly time and labor costs in construction, machinery assembly, and heavy-duty fabrication projects where reliability cannot be compromised.

Specification Summary & Compliance

This screw features a 5/8"-11 UNC coarse thread with a Class 2A thread fit for standard tolerance and ease of assembly. It is manufactured to meet ASME B18.2.1 specifications, ensuring dimensional accuracy and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and suitable for environmentally conscious industrial procurement.