S-92186A371 3/8"-24 x 2 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance in harsh environments thanks to 316 stainless steel construction, ideal for marine, chemical, and outdoor applications.
• Superior strength and durability with a 70,000 psi tensile strength and Rockwell B70 hardness, ensuring reliable performance under high stress.
• Precise and secure fastening with UNF fine threading and Class 2A thread fit, providing excellent vibration resistance and reduced loosening.
• Easy installation and removal using standard tools with the external hex drive and hex head design, saving time on assembly lines.
• Optimized for partial threading needs allowing for controlled clamp load and effective use in assemblies requiring unthreaded shank sections.
• Compliance with major industry standards including ASME B18.2.1, ensuring dimensional accuracy and interchangeability for consistent quality.
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for safe use.

Professional Applications & Engineering Value

This 316 stainless steel hex head screw is engineered to solve critical challenges in demanding industrial settings. Its UNF fine thread design and Class 2A thread fit deliver tight, reliable connections that resist loosening from vibrations—common in machinery, automotive, and structural assemblies. The partially threaded shank allows for precise clamp force distribution, preventing damage to softer materials. With external hex drive compatibility, it enables quick installation using standard wrenches, boosting efficiency in production and maintenance. The high corrosion resistance of 316 stainless steel makes it ideal for harsh environments like chemical processing or marine applications, reducing failure risks and maintenance costs. By integrating ASME B18.2.1 standards, this screw ensures uniformity and reliability, supporting long-term operational integrity in heavy-duty fastening scenarios.

Specification Summary & Compliance

This screw adheres to precise dimensional and performance criteria, including a Class 2A thread fit for consistent assembly and UNF fine threading per inch-based standards. It meets the ASME B18.2.1 specification for hex head screws, ensuring reliable interchangeability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) confirms it is free from hazardous substances, supporting safe and sustainable industrial use.