S-92198A519 1/2"-13 x 12 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 environments and reducing replacement frequency.
• Exceptional tensile strength of 80,000 psi ensures reliable performance under high-stress conditions and heavy loads.
• Easy installation and removal with a 3/4" external hex head and coarse UNC threads for quick assembly in various materials.
• Precise thread fit with Class 2A tolerance providing consistent engagement and reducing the risk of cross-threading.
• Optimized load distribution from the partially threaded design, minimizing stress concentration and enhancing joint integrity.
• High durability backed by Rockwell B70 hardness, offering excellent wear resistance and long service life.
• Regulatory compliance with ASME B18.2.1, RoHS 3, and REACH, ensuring safety and environmental standards are met.

Professional Applications & Engineering Value

This 1/2"-13 UNC hex head screw is engineered to address critical industrial challenges, such as vibration loosening and material fatigue. The 18-8 stainless steel material provides inherent corrosion resistance, making it suitable for outdoor, marine, and chemical processing applications where moisture and corrosive agents are present. The coarse thread and external hex drive facilitate rapid installation in structural steel, machinery, and heavy equipment, reducing assembly time. With a partially threaded shank, it concentrates clamping force near the joint, preventing shear failure and maintaining bolt tension in dynamic loads. Ideal for construction, manufacturing, and infrastructure projects, this screw delivers reliable performance under 80,000 psi tensile strength, ensuring long-term stability in demanding environments.

Specification Summary & Compliance

This product features a 1/2"-13 UNC thread with Class 2A fit for precise dimensional accuracy and easy assembly. It complies with ASME B18.2.1 manufacturing standards, ensuring consistent quality and interchangeability. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for industrial use.