S-92198A408 7/16"-20 x 2 1/2" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance from 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
• High tensile strength of 80,000 psi ensures reliable performance under significant load and stress, preventing joint failure.
• Fine UNF threading (7/16"-20) provides a tighter, more secure fit compared to coarse threads, reducing the risk of loosening from vibration.
• Class 2A thread fit offers excellent manufacturability and ease of assembly while maintaining strong, reliable engagement with mating nuts.
• External hex drive and hex head design allows for high-torque installation with standard tools, speeding up assembly and maintenance.
• Partial threading provides an unthreaded shank for precise clamping in specific applications, enhancing joint stability.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees consistent quality, material safety, and environmental responsibility.

Professional Applications & Engineering Value

This 18-8 Stainless Steel Hex Head Screw is engineered to solve critical challenges in demanding sectors like heavy machinery, construction, and marine equipment. Its fine UNF thread (7/16"-20) and Class 2A fit ensure vibration resistance and leak-proof sealing in high-pressure assemblies. The external hex drive facilitates quick, high-torque fastening, reducing installation time in tight spaces. With a Rockwell B70 hardness and 80,000 psi tensile strength, it withstands extreme mechanical stress and cyclic loading, preventing fatigue failures. The corrosion-resistant properties of 18-8 Stainless Steel make it suitable for environments exposed to moisture, chemicals, and temperature variations, ensuring long-term reliability and reduced maintenance costs in industrial frameworks.

Specification Summary & Compliance

This screw adheres to ASME B18.2.1 dimensional standards, ensuring interchangeability and precision. Thread specifications include a 7/16"-20 UNF fine thread with Class 2A tolerance for consistent fit. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), confirming the absence of hazardous substances. The material and manufacturing process meet the declared mechanical properties, including Rockwell B70 hardness and 80,000 psi tensile strength, for reliable performance in certified industrial applications.