S-92703A109 2-56 x 3/8" ASME B18.3 Stainless Steel Torx Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel construction and passivated finish, ideal for harsh industrial environments.
• Enhanced torque transmission and reduced cam-out thanks to the Torx Plus drive (IP6/T6), ensuring secure fastening and tool longevity.
• Reliable high-strength performance with 60,000 psi tensile strength and Rockwell B70 hardness for demanding applications.
• Precise and secure fit with UNC coarse threads and Class 2A fit, providing consistent engagement and vibration resistance.
• Flush, low-profile installation with a standard flat head and 82° countersink angle, perfect for space-constrained assemblies.
• Full threading for maximum grip along the entire 3/8" length, distributing load evenly and improving joint integrity.
• Compliance with major industry standards including ASME B18.3, RoHS 3, and REACH, ensuring quality and environmental safety.

Professional Applications & Engineering Value

These 2-56 UNC flat head screws are engineered to solve critical fastening challenges in precision machinery, electronics, and aerospace assemblies. The combination of 18-8 stainless steel and a passivated finish provides exceptional resistance to oxidation and chemical exposure, extending service life in corrosive settings. The Torx Plus drive system (IP6/T6) minimizes tool slippage and head stripping, allowing for higher torque application and repeatable maintenance cycles. With a fully threaded design and Class 2A fit, these screws ensure uniform stress distribution and reliable clamping force, preventing loosening under dynamic loads. The 82° countersink angle and flat head profile enable a seamless, flush finish, reducing aerodynamic drag or snag risks in compact enclosures and panels.

Specification Summary & Compliance

This product adheres to UNC coarse thread specifications with a Class 2A tolerance for consistent thread engagement. Manufacturing and dimensional compliance are verified per ASME B18.3. The screws are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring they are free of restricted hazardous substances. Key dimensional attributes include a thread size of 2-56, length of 3/8", head diameter of 0.162", and drive size of IP6/T6.