S-92210A209 8-32 x 2 1/2" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 Stainless Steel construction and a passivated finish, ensuring long-term reliability in harsh environments.
• Exceptional mechanical strength with a tensile strength of 70,000 psi and Rockwell B55 hardness, providing dependable performance under high-stress conditions.
• Precise, secure fastening achieved through a Class 3A thread fit and UNC coarse threading, minimizing the risk of loosening in vibrating applications.
• Efficient installation and removal with a 3/32" hex drive, allowing for high torque application and reducing assembly time.
• Optimal flush mounting due to the standard flat head profile and 82° countersink angle, creating a smooth, professional finish.
• Full-length thread engagement as the screw is fully threaded, offering maximum grip and adjustability along the entire 2 1/2" length.
• Guaranteed compliance and safety by meeting ASME B18.3, RoHS 3, and REACH standards, ensuring product quality and environmental responsibility.

Professional Applications & Engineering Value

This 8-32 UNC Flat Head Screw is engineered to address critical challenges in industrial assembly and machinery. The 18-8 Stainless Steel material, combined with a passivated finish, provides excellent resistance to oxidation and chemical exposure, making it ideal for applications in manufacturing, marine, and chemical processing industries where corrosion is a primary concern. The Class 3A thread fit and coarse UNC threading ensure a tight, reliable connection that withstands vibration and dynamic loads, reducing maintenance needs. The hex drive design allows for high-torque installation, preventing cam-out and damage to the fastener head, which is crucial for automated or high-volume production lines. Its fully threaded design and 82° countersink angle enable secure, flush mounting in pre-drilled holes, essential for applications requiring a smooth surface finish, such as in enclosures, fixtures, and precision equipment.

Specification Summary & Compliance

This screw adheres to precise dimensional standards, including a Class 3A thread fit for superior tolerance and a UNC coarse thread with right-hand direction. Manufacturing and quality are governed by ASME B18.3 specifications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free from hazardous substances and safe for use in various industrial and international markets.