S-93190A585 5/16"-18 x 1 1/4" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance in harsh environments thanks to 316 Stainless Steel construction
• High tensile strength of 70,000 PSI ensures reliable, long-lasting fastening for demanding applications
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation
• Fully threaded UNC coarse thread design delivers maximum grip and holding power
• External hex drive and hex head allow for easy installation and high torque application with standard tools
• Class 2A thread fit guarantees consistent, precise engagement for smooth assembly
• Compliance with ASME B18.2.1, RoHS 3, and REACH ensures quality, safety, and environmental standards are met

Professional Applications & Engineering Value

This 5/16"-18 UNC hex head screw is engineered from 316 Stainless Steel, offering exceptional resistance to corrosion, chlorides, and acidic conditions, making it ideal for marine, chemical processing, and outdoor industrial applications. The fully threaded coarse UNC thread provides rapid installation and superior clamping force, reducing the risk of loosening under vibration. With a high tensile strength of 70,000 PSI and Rockwell B70 hardness, it withstands heavy loads and mechanical stress, ensuring reliable performance in machinery, structural assemblies, and equipment requiring external hex drive for secure fastening. Its compliance with major standards assures consistency and safety in professional use.

Specification Summary & Compliance

This screw features a 5/16"-18 UNC coarse thread with Class 2A thread fit for precise dimensional accuracy, a length of 1-1/4", and is fully threaded. It conforms to ASME B18.2.1 manufacturing standards and is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and suitable for global industrial markets.