S-92186A979 1 1/4"-7 x 12" 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 chemical exposure
• Exceptional load-bearing capacity with 70,000 psi tensile strength, providing reliable performance in high-stress applications
• Enhanced durability and wear resistance from Rockwell B70 hardness, ensuring long service life under demanding conditions
• Quick and secure installation with coarse UNC threading and Class 2A fit, reducing assembly time while maintaining precision
• Optimized torque application through the external hex drive and large 1 7/8" head width, allowing for high tightening forces
• Versatile partial threading design with 2 3/4" minimum thread length, providing strong grip where needed while minimizing material use
• Full regulatory compliance with ASME B18.2.1, RoHS 3, and REACH standards, ensuring safety and environmental responsibility

Professional Applications & Engineering Value

This heavy-duty hex head screw delivers exceptional engineering value in demanding industrial settings where corrosion resistance and structural integrity are paramount. The 316 stainless steel composition provides superior protection against chemical corrosion and extreme weather conditions, making it ideal for marine applications, chemical processing plants, and offshore structures. The coarse UNC threading with Class 2A fit ensures rapid installation and reliable fastening in heavy machinery, structural steel connections, and large-scale construction projects. The partially threaded design concentrates the clamping force precisely where needed, while the substantial 12" length accommodates thick materials and complex assemblies. These industrial screws are engineered to withstand vibration, heavy loads, and environmental challenges that would compromise inferior fasteners.

Specification Summary & Compliance

This 1 1/4"-7 UNC hex head screw features precise Class 2A thread fit tolerances and coarse thread spacing according to Unified National Coarse standards. Manufacturing and dimensional specifications strictly comply with ASME B18.2.1 requirements. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) regulations for chemical safety. All dimensional measurements follow the inch system with right-hand thread direction and external hex drive configuration.