S-92198A821 5/8"-11 x 7 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction, ideal for harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness for reliable, heavy-duty fastening
• Optimized for high-speed assembly with external hex drive and coarse UNC threads, reducing installation time
• Precise thread engagement ensured by Class 2A thread fit, minimizing cross-threading risks
• Versatile partial threading provides unthreaded shank for enhanced shear strength in structural applications
• Full regulatory compliance with ASME B18.2.1 standards and environmental regulations including RoHS 3 and REACH
• Robust 7 1/2" length accommodates thick material sections while maintaining structural integrity

Professional Applications & Engineering Value

This 5/8"-11 UNC hex head screw delivers critical engineering solutions where corrosion resistance and structural integrity are paramount. The 18-8 Stainless Steel composition provides excellent protection against rust and chemical degradation in demanding environments such as marine applications, food processing equipment, and outdoor structures. The partially threaded design offers distinct advantages: the unthreaded shank section provides superior resistance to shear forces, while the threaded portion ensures secure fastening. With coarse UNC threads and external hex drive, installation becomes significantly faster and more efficient, reducing labor costs in high-volume assembly operations. The combination of 80,000 psi tensile strength and precise Class 2A thread fit guarantees reliable performance in vibration-prone applications, making these industrial hex screws ideal for machinery, structural steel connections, and heavy equipment manufacturing where failure is not an option.

Specification Summary & Compliance

This high-performance fastener features precise Class 2A thread fit per UNC standards with 5/8"-11 coarse threading and right-hand thread direction. Manufacturing strictly adheres to ASME B18.2.1 specifications for dimensional accuracy and performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors. With a total length of 7 1/2" and minimum thread length of 1 3/4", this screw meets rigorous industrial standards for heavy-duty applications.