S-92210A201 8-32 x 1 1/4" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B55 hardness for reliable, long-lasting fastening under high stress.
• Precise and secure installation enabled by the Class 3A thread fit and coarse UNC thread, ensuring tight, vibration-resistant connections.
• Efficient flush mounting with a standard 82° countersink angle and flat head design for a smooth, professional finish in countersunk holes.
• High-torque assembly capability from the 3/32" hex drive, allowing for secure driving and reduced risk of stripping.
• Full-length threading provides consistent grip along the entire 1-1/4" length, maximizing holding power in various material thicknesses.
• Guaranteed compliance and reliability by meeting ASME B18.3 standards and being RoHS 3 and REACH compliant for safe, regulated use.

Professional Applications & Engineering Value

This 8-32 UNC flat head screw is engineered to address critical challenges in industrial assembly, such as corrosion, vibration loosening, and high-stress fatigue. Constructed from 18-8 stainless steel with a passivated finish, it offers excellent resistance to rust and chemicals, making it ideal for applications in marine, chemical processing, and outdoor equipment. The coarse UNC thread and Class 3A thread fit ensure quick installation and a secure hold in softer materials or where vibration is a concern, reducing maintenance needs. The hex drive design allows for high torque application, minimizing cam-out and enhancing assembly efficiency in automated or manual settings. Fully threaded and with a standard 82° countersink angle, it provides reliable, flush fastening in machinery, enclosures, and structural components, ensuring durability and performance in demanding industrial screw applications.

Specification Summary & Compliance

This screw features precise Class 3A thread fit per UNC standards, ensuring tight tolerances for reliable engagement. It is manufactured in accordance with ASME B18.3 specifications, guaranteeing dimensional accuracy and performance. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), it meets environmental and safety regulations for hazardous substances, providing assurance for use in global markets.