S-93190A685 7/16"-20 x 1" 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, ideal for marine, chemical, and outdoor applications.
• High tensile strength of 70,000 psi ensures reliable, long-lasting fastening under significant mechanical stress and vibration.
• Class 2A thread fit provides consistent, smooth assembly and disassembly, reducing installation time and risk of cross-threading.
• Fine UNF threading (7/16"-20) offers a tighter seal and improved resistance to loosening compared to coarse threads.
• External hex drive and hex head design allows for high-torque application with standard tools, ensuring a secure and efficient installation.
• Full threading along the 1" length maximizes grip and load distribution across the entire fastened joint.
• Compliance with ASME B18.2.1, RoHS 3, and REACH guarantees product quality, safety, and environmental responsibility for global supply chains.

Professional Applications & Engineering Value

This 316 stainless steel hex head screw is engineered to address critical challenges in demanding industrial applications. Its core value lies in combining exceptional corrosion resistance with high tensile strength, making it a robust solution for environments exposed to moisture, chemicals, and salt spray, such as marine equipment, chemical processing plants, and food machinery. The 7/16"-20 UNF fine thread provides superior vibration resistance and a more precise clamp load than coarse threads, which is vital for maintaining integrity in dynamic assemblies. The external hex drive facilitates easy installation with common wrenches, streamlining maintenance and assembly processes. This fastener is specifically designed to prevent premature failure, reduce maintenance downtime, and ensure long-term reliability in structural and mechanical systems.

Specification Summary & Compliance

This hex head screw features a 7/16"-20 UNF thread with a Class 2A thread fit, ensuring dimensional accuracy and interchangeability. It is manufactured to meet the ASME B18.2.1 standard for hex cap screws. 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 suitable for use in regulated markets.