S-92198A804 5/8"-11 x 2 1/2" 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
• Exceptional tensile strength rated at 80,000 psi for reliable performance in heavy-duty applications
• Precise Class 2A thread fit ensures smooth assembly and consistent engagement with mating components
• External hex drive design provides maximum torque transfer and easy installation with standard tools
• Coarse UNC threading offers faster installation and reduced cross-threading risk in production settings
• Partial threading configuration allows for controlled clamping force and secure fastening in structural applications
• Rockwell B70 hardness maintains thread integrity and prevents deformation under repeated use

Professional Applications & Engineering Value

These 5/8"-11 UNC hex head screws deliver critical performance advantages in industrial fastening applications where corrosion resistance and structural integrity are paramount. The 18-8 stainless steel composition provides excellent protection against rust and chemical exposure, making them ideal for marine, chemical processing, and outdoor equipment applications. The coarse thread design ensures rapid assembly in production environments while minimizing the risk of cross-threading. With partial threading and substantial 2 1/2" length, these screws offer precise clamping control in structural steel connections, machinery assembly, and heavy equipment manufacturing. The external hex drive accommodates high torque requirements, ensuring secure fastening in vibration-prone applications without stripping or damage.

Specification Summary & Compliance

Manufactured to exacting ASME B18.2.1 standards with Class 2A thread fit tolerance for consistent mating performance. The UNC coarse thread (5/8"-11) and right-hand threading conform to industry standards for compatibility. These hex head screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The mechanical properties include Rockwell B70 hardness and 80,000 psi tensile strength for reliable performance in demanding industrial applications.