S-92198A664 9/16"-12 x 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 for long-lasting performance in harsh industrial environments
• Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness to withstand heavy loads and prevent failure
• Precise thread engagement with Class 2A thread fit ensuring reliable fastening and reduced risk of cross-threading
• Optimized for high-torque applications featuring external hex drive and 13/16" head width for secure tool engagement
• Enhanced assembly efficiency with coarse UNC threads providing faster installation and reduced galling risk
• Partial threading design offering superior clamping force distribution across the 4" length for structural integrity
• Full regulatory compliance meeting ASME B18.2.1 specifications and environmental standards including RoHS 3 and REACH

Professional Applications & Engineering Value

This 9/16"-12 UNC hex head screw delivers exceptional engineering value for heavy-duty industrial applications where reliability is paramount. The 18-8 stainless steel composition provides outstanding corrosion resistance, making it ideal for machinery, structural frameworks, and outdoor equipment exposed to moisture and chemicals. The coarse thread design ensures rapid assembly in production environments while maintaining secure fastening. With partial threading along its 4" length, this fastener distributes clamping forces more effectively than fully threaded alternatives, preventing joint loosening under vibration. The external hex drive and substantial head dimensions accommodate high torque applications, while the Class 2A thread fit guarantees precise mating with nuts and tapped holes, reducing installation errors and rework in manufacturing and construction projects.

Specification Summary & Compliance

This inch system fastener features precise Class 2A thread fit with UNC coarse threads (9/16"-12) and right-hand threading. Manufacturing complies with ASME B18.2.1 specifications, ensuring dimensional accuracy and interchangeability. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) standards for chemical safety, making it suitable for regulated industries and international markets.