S-92198A137 1"-14 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, ideal for harsh environments and reducing maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and in demanding structural applications.
• Rockwell B70 hardness provides excellent wear resistance and durability for long service life.
• External hex drive and hex head design allows for easy installation and high torque application with standard tools.
• Class 2A thread fit and fine UNF thread offer precise engagement and vibration resistance in assembled components.
• Partial threading provides an unthreaded shank for enhanced shear strength and accurate clamping.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality and safety for regulated industries.

Professional Applications & Engineering Value

This 1"-14 fine thread hex head screw is engineered to address critical challenges in industrial assembly, such as vibration loosening and material fatigue. The 18-8 stainless steel material offers excellent corrosion resistance, making it suitable for outdoor, marine, and chemical processing equipment where moisture and corrosive agents are present. The fine UNF thread and Class 2A fit ensure tight, secure fastening that minimizes the risk of thread stripping and maintains clamp load under dynamic stresses. With an external hex drive, it facilitates quick installation and removal in confined spaces, enhancing efficiency in manufacturing, construction, and machinery maintenance. Its partial threading design provides a smooth shank section that improves shear resistance, making it ideal for securing structural components, heavy machinery, and automotive assemblies where reliability is paramount.

Specification Summary & Compliance

This hex head screw features a 1"-14 fine thread with Class 2A thread fit per UNS standards, ensuring precise dimensional accuracy and interchangeability. It is manufactured in accordance with ASME B18.2.1 specifications for consistent performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free from hazardous substances and safe for use in various industrial and consumer applications.