S-92800A372 1/4"-28 x 3 1/2" 18-8 Stainless Steel Hex Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional tensile strength of 80,000 psi ensures reliable performance under high-stress applications
• Precise Class 2A thread fit guarantees consistent engagement and reduces the risk of cross-threading
• Fully threaded design provides maximum grip and load distribution along the entire 3 1/2" length
• External hex drive allows for high-torque installation with standard tools, improving assembly efficiency
• UNF fine threading offers superior vibration resistance compared to coarse threads in dynamic applications
• Rockwell B70 hardness maintains thread integrity and prevents stripping during repeated use

Professional Applications & Engineering Value

Engineered for demanding industrial applications, these 18-8 stainless steel hex head screws combine material excellence with precision UNF fine threading to solve critical fastening challenges. The corrosion-resistant properties make them ideal for marine, chemical processing, and outdoor equipment where moisture and corrosive elements are concerns. The Class 2A thread fit ensures consistent mating with nuts and tapped holes, reducing assembly errors and maintenance downtime. With fully threaded construction and external hex drive, they provide maximum clamping force and are easily installed in confined spaces using standard wrenches. These screws deliver reliable performance in machinery, structural assemblies, and precision equipment where vibration resistance and long-term durability are paramount.

Specification Summary & Compliance

This 1/4"-28 UNF hex head screw features Class 2A thread fit per UNF standards, ensuring precise dimensional accuracy and interchangeability. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental safety and material compliance. The right-hand threaded, fully threaded design maintains consistent mechanical properties throughout the 3 1/2" length, backed by 80,000 psi tensile strength and Rockwell B70 hardness for reliable performance in industrial fastening applications.