S-92210A401 0-80 x 5/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Exceptional corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments
• Superior load-bearing capability with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-term fastening
• Precise thread engagement through Class 3A UNF fine threading, ensuring secure fits and reduced vibration loosening
• Efficient installation and removal with hex drive design, allowing high torque application in confined spaces
• Flush surface mounting with standard 82° countersink angle flat head, maintaining aerodynamic and aesthetic profiles
• Full threading versatility for consistent grip along the entire 5/8" length, accommodating various material thicknesses
• Regulatory peace of mind with compliance to ASME B18.3, RoHS 3, and REACH, meeting global quality and safety standards

Professional Applications & Engineering Value

This 0-80 UNF flat head hex screw delivers critical performance in precision assemblies where space constraints and environmental factors challenge fastener integrity. The 18-8 stainless steel material, enhanced by a passivated finish, resists oxidation and chemical exposure in marine, chemical processing, and outdoor applications. Its Class 3A UNF fine threading provides tighter tolerances than standard fits, minimizing backlash in dynamic loads and high-vibration machinery like robotics, aerospace controls, and medical devices. The hex drive and flat head design enable countersunk installations that eliminate protrusions, which is essential for moving parts and sleek enclosures. By combining 70,000 psi tensile strength with full threading, it ensures uniform stress distribution, reducing the risk of joint failure in critical industrial fastening systems.

Specification Summary & Compliance

Manufactured to inch system dimensions, this screw features a 0-80 UNF thread with Class 3A fit for high-precision applications. It adheres to ASME B18.3 specifications for dimensional consistency and mechanical properties. The product is confirmed RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, ensuring it meets stringent environmental and health regulations for hazardous substance restrictions.