S-92240A101 1/4"-28 x 3/8" 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 industrial environments
• Exceptional tensile strength of 80,000 PSI ensures reliable, long-lasting fastening under high-stress conditions
• Precise Class 2A thread fit guarantees smooth assembly and consistent performance in fine-thread applications
• External hex drive design allows for easy installation and removal with standard tools, reducing assembly time
• Full threading along the 3/8" length provides maximum grip and uniform load distribution
• High Rockwell B70 hardness maintains thread integrity and resists wear during repeated use
• Compliance with major industry standards including ASME B18.2.1, RoHS 3, and REACH ensures safety and regulatory adherence

Professional Applications & Engineering Value

This 1/4"-28 UNF hex head screw is engineered to address critical challenges in industrial and mechanical assemblies where corrosion resistance and high tensile strength are paramount. The 18-8 stainless steel material prevents rust and degradation in humid or chemically aggressive settings, extending service life and reducing maintenance costs. Its fine UNF thread and Class 2A fit deliver precise engagement, minimizing the risk of cross-threading and vibration-induced loosening in machinery, automotive, and electrical enclosures. The external hex drive facilitates quick, secure fastening with common wrenches, enhancing productivity in high-volume production lines. Ideal for applications demanding reliable performance under dynamic loads, this screw ensures joint integrity where failure is not an option.

Specification Summary & Compliance

This screw adheres to Class 2A thread tolerance per UNF standards, ensuring dimensional accuracy and interchangeability. It meets ASME B18.2.1 specifications for hex head screws and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming the absence of hazardous substances. Manufactured with a right-hand thread and fully threaded design, it supports consistent fastening performance across industrial applications.