S-92186A918 1"-8 x 3 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 316 stainless steel construction, ideal for harsh industrial and marine environments
• Superior mechanical strength with 70,000 PSI tensile strength and Rockwell B70 hardness for reliable, heavy-duty load-bearing
• Precise and secure fastening ensured by Class 2A thread fit, minimizing the risk of cross-threading and assembly errors
• Optimized for high-torque applications with a large 1 1/2" external hex head for easy installation and removal with standard tools
• Enhanced durability in corrosive settings due to compliance with RoHS 3 and REACH environmental regulations
• Versatile partial threading allows for both secure clamping and adjustable positioning in assemblies
• Guaranteed dimensional consistency and interchangeability through adherence to ASME B18.2.1 manufacturing standards

Professional Applications & Engineering Value

This 316 Stainless Steel Hex Head Screw delivers critical performance in demanding environments where corrosion and mechanical stress are primary concerns. The UNC coarse thread design provides rapid assembly and superior resistance to vibration loosening, while the partially threaded shank offers flexibility for applications requiring a non-threaded grip length. Engineered with a Class 2A thread fit, it ensures consistent engagement and reduces the risk of galling during installation. Its external hex drive and substantial head size accommodate high torque values, making it a reliable choice for structural frameworks, heavy machinery, chemical processing equipment, and offshore installations. The combination of 70,000 PSI tensile strength and exceptional material properties directly addresses failure points in industrial fastening, extending service life and reducing maintenance cycles.

Specification Summary & Compliance

This screw conforms to ASME B18.2.1 dimensional standards, ensuring precise thread geometry and head dimensions. The UNC 1"-8 coarse thread is manufactured to Class 2A tolerance for consistent fit. It is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.