S-92240A556 1/4"-20 x 3 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
• Exceptional tensile strength of 80,000 psi ensures reliable performance under heavy loads
• Precise Class 2A thread fit provides consistent engagement and reduces cross-threading risks
• Full threading along the 3½" length offers maximum grip and adjustment flexibility
• External hex drive with 7/16" head enables high-torque installation with standard tools
• Rockwell B70 hardness maintains thread integrity and resistance to deformation
• Comprehensive compliance with ASME B18.2.1, RoHS 3, and REACH ensures regulatory acceptance

Professional Applications & Engineering Value

This 18-8 stainless steel hex head screw delivers critical performance advantages for demanding industrial applications. The combination of 80,000 psi tensile strength and Rockwell B70 hardness provides exceptional load-bearing capacity while resisting mechanical stress. The UNC coarse thread with Class 2A fit ensures rapid installation and reliable engagement in various materials, reducing assembly time without compromising joint integrity. The external hex drive design accommodates high-torque applications, making it ideal for machinery assembly, structural frameworks, and equipment maintenance where vibration resistance and long-term reliability are paramount. The fully threaded 3½" length offers versatile fastening solutions across different material thicknesses.

Specification Summary & Compliance

Manufactured to ASME B18.2.1 specifications with Class 2A thread tolerances for precise fitment. Features 1/4"-20 UNC coarse threads with right-hand direction and external hex drive (7/16" head width, 5/32" head height). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across various industrial sectors.