S-92186A982 1 1/2"-6 x 4" 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 chemical and marine environments
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for heavy-load applications
• Reliable coarse threading (UNC 1½"-6) provides faster installation and better vibration resistance in industrial settings
• Precision Class 2A thread fit ensures consistent engagement and reduces cross-threading risks during assembly
• Optimized partial threading design allows for controlled clamping force distribution across connected materials
• Standard-compliant manufacturing per ASME B18.2.1 guarantees dimensional accuracy and interchangeability
• Environmental compliance with RoHS 3 and REACH regulations ensures safe use in regulated industries

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers critical performance advantages in demanding industrial applications where corrosion resistance and structural integrity are paramount. The 316 Stainless Steel composition provides exceptional protection against chemical exposure and atmospheric corrosion, making it ideal for marine equipment, chemical processing plants, and food processing machinery. The coarse UNC threading combined with Class 2A thread fit ensures rapid installation while maintaining precise engagement, reducing assembly time in high-volume manufacturing. The external hex drive with substantial 2¼" head width offers superior torque transmission for secure fastening in structural connections, piping systems, and heavy machinery where vibration resistance is critical. The partially threaded design concentrates clamping force precisely where needed, preventing joint loosening under dynamic loads.

Specification Summary & Compliance

This 1½"-6 UNC hex head screw features precise Class 2A thread fit per ASME B18.2.1 specifications, ensuring dimensional accuracy and reliable performance. The screw maintains 4" overall length with 3¼" minimum thread length and coarse thread spacing for optimal engagement. Manufacturing complies with ASME B18.2.1 standards for hex head screws, while meeting RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for restricted substances.