S-92240A136 1 1/8"-7 x 3" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance from 18-8 stainless steel construction, ideal for harsh industrial environments and outdoor applications.
• High tensile strength of 80,000 PSI ensures reliable performance and joint integrity under heavy loads and stress.
• Rockwell B70 hardness provides superior durability and resistance to wear, extending the fastener's service life.
• Coarse UNC threads with Class 2A fit allow for faster assembly and easier alignment, reducing installation time and effort.
• External hex drive and full threading offer maximum drive torque transfer and consistent clamping force along the entire 3-inch length.
• Compliance with ASME B18.2.1 guarantees dimensional accuracy and interchangeability, ensuring a perfect fit for standardized applications.
• RoHS 3 and REACH compliance confirms the use of safe, environmentally responsible materials for global supply chain requirements.

Professional Applications & Engineering Value

This 1 1/8"-7 UNC hex head screw is engineered to solve critical fastening challenges in heavy-duty industrial applications. The 18-8 Stainless Steel material provides excellent resistance to rust and corrosion, making it suitable for machinery, structural assemblies, and marine equipment exposed to moisture and chemicals. The coarse thread design and Class 2A thread fit ensure quick, secure installation even in materials where fine threads might strip or fail. With an external hex drive, it allows for high torque application, preventing slippage during tightening. Its fully threaded 3-inch length offers uniform stress distribution, reducing the risk of loosening under vibration and dynamic loads, which is vital for maintaining long-term structural integrity in construction, manufacturing, and transportation sectors.

Specification Summary & Compliance

This hex head screw adheres to precise dimensional standards with a Class 2A thread fit and UNC coarse thread specification (1 1/8"-7). It is manufactured in compliance with the ASME B18.2.1 standard for hex bolts, ensuring consistent quality and performance. The product is also verified to be RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it meets stringent environmental and safety regulations for hazardous substances.