S-92210A442 3/8"-24 x 2 1/2" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 18-8 stainless steel and passivated finish, ideal for harsh environments.
• High tensile strength of 70,000 psi ensures reliable load-bearing capacity in demanding applications.
• Precise Class 3A thread fit provides excellent engagement and vibration resistance in fine-thread assemblies.
• Hex drive (7/32") design allows for easy installation and high torque application without cam-out.
• 82° countersink angle and flat head enables flush mounting for a clean, aerodynamic surface finish.
• Fully threaded shank offers maximum grip length and uniform stress distribution along the entire fastener.
• Compliance with ASME B18.3, RoHS 3, and REACH guarantees quality, safety, and environmental standards.

Professional Applications & Engineering Value

This 3/8"-24 UNF Class 3A flat head screw is engineered to address critical industrial fastening challenges, such as vibration loosening and corrosion-induced failure. Made from 18-8 stainless steel with a passivated finish, it resists oxidation and chemical exposure, making it suitable for marine, chemical processing, and outdoor equipment. The fine thread spacing and Class 3A fit ensure tight, secure connections in precision machinery, reducing maintenance needs. Its hex drive and fully threaded design facilitate quick assembly in confined spaces, enhancing productivity in automotive, aerospace, and heavy machinery applications where reliability is paramount.

Specification Summary & Compliance

This screw adheres to ASME B18.3 specifications, with a Class 3A thread fit for high precision and fine thread spacing (24 TPI). Dimensions include a 2 1/2" length, 0.375" thread diameter, and 82° countersink angle. It meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance, ensuring it is free from hazardous substances and safe for various industrial uses.