S-92240A378 3/4"-16 x 1 1/4" ASME B18.2.1 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 Stainless Steel construction, ideal for harsh environments and reducing long-term maintenance costs.
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and prevents fastener failure in critical applications.
• Precise Class 2A thread fit provides smooth assembly and a secure, vibration-resistant connection.
• External hex drive and large 1 1/8" head width allow for high torque application with standard tools, speeding up installation.
• Fine UNF thread (3/4"-16) offers improved adjustment precision and a stronger hold in a wide range of materials compared to coarse threads.
• Full threading along the 1 1/4" length maximizes grip and allows for versatile use with nuts or tapped holes.
• Rockwell B70 hardness provides excellent durability and resistance to wear, extending the service life of the screw.

Professional Applications & Engineering Value

This 3/4"-16 UNF hex head screw is engineered to solve critical challenges in industrial assembly and construction. Its 18-8 Stainless Steel material inherently resists rust and corrosion, making it perfect for outdoor equipment, marine applications, and chemical processing plants where environmental factors degrade lesser materials. The fine thread and Class 2A fit ensure a tight, secure fastening that minimizes the risk of loosening under vibration, a common issue in machinery and automotive frameworks. The combination of 80,000 psi tensile strength and a robust external hex drive head allows for high-clamp load applications in structural steelwork and heavy-duty manufacturing, providing engineers with a reliable, long-lasting fully threaded fastener that maintains integrity under stress.

Specification Summary & Compliance

This screw features a 3/4"-16 UNF thread with a Class 2A thread fit for precise dimensional accuracy. It is manufactured in accordance with ASME B18.2.1 specifications and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent industry standards for safety and environmental responsibility.