S-90585A637 3/8"-16 x 3" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 Stainless Steel construction and passivated finish, ideal for harsh environments and extended service life
• Exceptional mechanical strength offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable performance under high stress
• Precision Class 3A thread fit ensures secure, vibration-resistant fastening with minimal risk of loosening in critical assemblies
• Full threading design provides maximum grip and load distribution along the entire 3-inch length for enhanced joint integrity
• Standard 82° countersink angle allows for flush mounting, reducing protrusion and improving safety in streamlined applications
• Hex drive compatibility (7/32") enables high-torque installation and removal with common tools, speeding up assembly processes
• Compliance with major standards including ASME B18.3, RoHS 3, and REACH, ensuring regulatory acceptance and environmental safety

Professional Applications & Engineering Value

Engineered for demanding industrial settings, these 3/8"-16 UNC flat head screws address critical challenges in machinery, marine, and chemical processing applications where corrosion resistance is paramount. The combination of 316 Stainless Steel and a passivated finish significantly reduces degradation from moisture, chemicals, and salt exposure, extending maintenance intervals. The coarse UNC thread and Class 3A fit provide superior holding power in both soft and hard materials, minimizing thread stripping. With a fully threaded design and hex drive, these screws ensure uniform clamping force and easy installation in confined spaces, making them ideal for structural frameworks, equipment housings, and assembly lines requiring ASME B18.3 compliance.

Specification Summary & Compliance

This screw adheres to inch system dimensions with a 3/8"-16 UNC coarse thread and Class 3A thread fit for precise tolerance. Manufacturing follows ASME B18.3 specifications, ensuring consistent quality and interchangeability. The product is verified as RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.