S-92198A730 1/2"-13 x 4 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance thanks to 18-8 Stainless Steel, ideal for harsh environments and reducing long-term maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under significant load and stress in demanding applications.
• Durable Rockwell B70 hardness provides excellent wear resistance and prevents thread deformation during installation and use.
• Coarse UNC thread design allows for faster installation and better performance in materials where fine threads might strip.
• Partially threaded shank provides an unthreaded grip length for improved clamping force and joint stability.
• External hex drive and hex head offer secure, high-torque installation with standard tools, minimizing slippage.
• Compliance with major industry standards including ASME B18.2.1, RoHS 3, and REACH ensures material quality and environmental safety.

Professional Applications & Engineering Value

This 1/2"-13 UNC Hex Head Screw is engineered to solve critical fastening challenges in industrial applications. Its 18-8 Stainless Steel construction provides superior corrosion resistance, making it suitable for outdoor machinery, marine equipment, and chemical processing plants where moisture and corrosive agents are present. The coarse thread and Class 2A thread fit ensure easy, reliable engagement in a variety of materials, reducing the risk of cross-threading. The partially threaded design concentrates the clamping force, preventing joint loosening under vibration. With an external hex drive for high-torque installation, this heavy-duty fastener delivers dependable performance in structural assemblies, construction projects, and manufacturing equipment where high-strength and durability are non-negotiable.

Specification Summary & Compliance

This screw features a 1/2"-13 UNC coarse thread with a Class 2A thread fit for standard tolerance and easy assembly. It is manufactured in compliance with the ASME B18.2.1 standard, ensuring dimensional accuracy and interchangeability. The product is also confirmed to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for hazardous substances.