S-92186A646 3/8"-16 x 5 1/2" ASME B18.2.1 Super-Corrosion-Resistant 316 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction, ideal for harsh industrial environments and outdoor applications
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable performance under heavy loads
• Easy installation and removal thanks to the external hex drive and coarse UNC threading that resists cross-threading
• Precise thread engagement with Class 2A thread fit ensuring consistent, secure fastening in industrial assemblies
• Optimized partial threading providing superior clamping force control where full threading isn't required
• Regulatory compliance assurance meeting ASME B18.2.1 standards plus RoHS 3 and REACH environmental regulations
• Versatile 5½" length accommodating various material thicknesses while maintaining structural integrity

Professional Applications & Engineering Value

This 3/8"-16 UNC hex head screw in 316 stainless steel delivers critical performance advantages for demanding industrial applications. The combination of 70,000 psi tensile strength and Rockwell B70 hardness ensures reliable fastening in structural assemblies, machinery, and heavy equipment where vibration resistance is paramount. The coarse UNC threading provides superior grip in softer materials and resists loosening under dynamic loads, while the partial threading design allows for precise clamp load distribution. Particularly valuable in marine, chemical processing, and food industry applications, the 316 stainless steel composition offers enhanced corrosion resistance compared to standard grades, significantly extending service life in aggressive environments. The external hex drive facilitates high-torque installation with common tools, streamlining assembly processes in manufacturing and maintenance operations.

Specification Summary & Compliance

This heavy-duty fastener features precise Class 2A thread fit with 3/8"-16 UNC coarse threading and right-hand thread direction. The partially threaded design provides minimum 1" thread length on the 5½" overall length. Manufacturing and dimensional compliance is certified to ASME B18.2.1 standards, ensuring interchangeability and reliability. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making this hex head screw suitable for global industrial applications with strict material restrictions.