S-92198A144 1 1/8"-7 x 4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction for long-lasting performance in harsh industrial environments
• Superior mechanical strength with 80,000 psi tensile strength and Rockwell B70 hardness to withstand heavy loads and vibrations
• Reliable coarse UNC threading for faster assembly and secure fastening in demanding applications
• Optimized partial threading design providing enhanced grip and reduced risk of cross-threading during installation
• Precision Class 2A thread fit ensuring consistent engagement and reliable performance across industrial assemblies
• Heavy-duty external hex drive with 1 11/16" head width for superior torque application and easy installation with standard tools
• Full regulatory compliance meeting ASME B18.2.1 standards and environmental regulations including RoHS 3 and REACH

Professional Applications & Engineering Value

This heavy-duty 18-8 stainless steel hex head screw delivers exceptional engineering value for industrial applications requiring reliable fastening under demanding conditions. The combination of 80,000 psi tensile strength and Rockwell B70 hardness ensures structural integrity in heavy machinery, construction equipment, and manufacturing systems. The coarse UNC thread profile with Class 2A fit provides rapid installation while maintaining secure connections in vibration-prone environments. The partial threading design optimizes clamping force distribution, making it ideal for applications where precise load management is critical. The external hex drive with substantial head dimensions allows for high-torque installation, reducing assembly time while preventing stripping in industrial maintenance and production settings.

Specification Summary & Compliance

This 1 1/8"-7 UNC hex head screw features precise Class 2A thread fit with 4" length and partial threading from 2 1/2" minimum thread length. Manufactured to ASME B18.2.1 specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The inch system measurement ensures compatibility with North American industrial standards and equipment specifications.