S-92703A209 4-40 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 and passivated finish, ideal for harsh industrial environments.
• Enhanced torque transmission and reduced cam-out using Torx Plus IP8 drive for reliable, high-torque fastening.
• High mechanical strength offering 60,000 psi tensile strength and Rockwell B70 hardness for durable, long-lasting connections.
• Flush, secure mounting with an 82° countersink angle and flat head design, minimizing protrusion in assembled components.
• Consistent, reliable threading with fully threaded UNC coarse threads and Class 2A fit, ensuring easy installation and vibration resistance.
• Broad compliance with industry standards including ASME B18.3, RoHS 3, and REACH, guaranteeing safety and regulatory adherence.
• Versatile right-hand thread design for standard applications, providing straightforward assembly in various machinery and equipment.

Professional Applications & Engineering Value

Engineered for precision and durability, these 4-40 UNC Flat Head Torx Plus Screws address critical industrial challenges such as component loosening under vibration and corrosion in demanding settings. The 18-8 Stainless Steel material, combined with a passivated finish, provides excellent resistance to rust and chemical exposure, making them suitable for industrial fasteners in machinery, electronics, and outdoor equipment. The Torx Plus IP8 drive ensures efficient torque application, reducing wear on tools and fasteners, while the fully threaded coarse design and Class 2A thread fit facilitate quick, secure installations. With a high tensile strength and 82° countersink angle, these screws deliver reliable performance in applications requiring flush surfaces and robust mechanical integrity, from assembly lines to precision instruments.

Specification Summary & Compliance

This screw features precise Class 2A thread fit and UNC coarse threads with a diameter of 0.112" and length of 3/8", ensuring dimensional accuracy per ASME B18.3 standards. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety adherence for global industrial use.