S-92240A537 1/4"-20 x 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 construction, ideal for harsh environments and long-term reliability.
• Superior mechanical strength with an 80,000 psi tensile strength and Rockwell B70 hardness, ensuring high load-bearing capacity and resistance to deformation.
• Efficient installation and removal provided by the external hex drive and hex head, allowing for high torque application with standard tools.
• Reliable coarse threading (UNC) with a Class 2A fit offers faster assembly and reduced cross-threading risk in a wide range of materials.
• Full threading along the 1/2" length ensures maximum grip and uniform stress distribution across the entire fastened joint.
• Compliance with major industry standards including ASME B18.2.1 for dimensional consistency, guaranteeing interchangeability and performance.
• Environmental and safety compliance with RoHS 3 and REACH regulations, making it suitable for regulated industries and global supply chains.

Professional Applications & Engineering Value

This 1/4"-20 UNC Hex Head Screw is engineered to solve critical challenges in industrial assembly and machinery. The 18-8 Stainless Steel material provides excellent resistance to oxidation and chemical exposure, making it perfect for applications in marine, food processing, and outdoor equipment where corrosion resistance is paramount. The coarse UNC thread and Class 2A fit ensure quick, secure fastening in metals, plastics, and wood, reducing installation time and preventing thread stripping. With an 80,000 psi tensile strength and external hex drive, it handles high-stress applications—from heavy-duty frames to conveyor systems—without compromising integrity. This screw delivers consistent performance, minimizes maintenance, and enhances the durability of your assemblies under demanding conditions.

Specification Summary & Compliance

This screw features a 1/4"-20 UNC coarse thread with a Class 2A thread fit, ensuring precise dimensional accuracy and easy assembly. It is manufactured in accordance with ASME B18.2.1 specifications for hex head screws, guaranteeing uniformity and reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming it is free of hazardous substances and safe for various industrial and consumer applications.