S-92240A441 1/2"-20 x 2 1/2" 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
• High tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
• Precision Class 2A thread fit provides smooth installation and secure fastening in fine-thread applications
• External hex drive design allows for high-torque installation with standard tools
• Full threading along the 2½" length maximizes engagement and load distribution
• Compliance with ASME B18.2.1 standards guarantees dimensional accuracy and interchangeability
• Rockwell B70 hardness maintains thread integrity and resistance to wear

Professional Applications & Engineering Value

These 1/2"-20 UNF hex head screws deliver exceptional value in demanding applications where corrosion resistance and high tensile strength are critical. The 18-8 stainless steel composition prevents rust in chemical processing, marine, and food equipment environments, while the fine UNF thread and Class 2A fit ensure vibration resistance in machinery and structural assemblies. The external hex drive facilitates quick installation with common tools, reducing assembly time. Fully threaded for maximum grip length, these screws are engineered to maintain clamp force in high-stress applications, preventing joint failure and reducing maintenance cycles.

Specification Summary & Compliance

This hex head screw features a 1/2"-20 UNF fine thread with Class 2A thread fit for precise dimensional tolerance. Manufactured to ASME B18.2.1 specifications, it ensures consistency and interchangeability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting environmental and safety standards for industrial use.