S-90909A535 3/8"-16 x 1" Stainless Steel Flanged Button Head Hex-Drive Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with 316 stainless steel construction and passivated finish, ideal for harsh industrial and marine environments
• High-strength performance with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing applications
• Precise thread engagement with Class 3A UNC coarse threads ensuring secure, vibration-resistant fastening in demanding conditions
• Efficient installation and removal thanks to the 7/32" hex drive and wide button head design for maximum torque application
• Enhanced stability and distribution from the integrated flange, reducing the need for separate washers and improving joint integrity
• Full threading along the 1" length provides consistent grip and flexibility in various material thicknesses
• Compliance with environmental standards including RoHS 3 and REACH, ensuring safe use in regulated industries

Professional Applications & Engineering Value

This 316 stainless steel rounded head screw is engineered to address critical challenges in corrosive and high-stress environments. The passivated finish enhances the innate corrosion resistance of 316 stainless steel, making it suitable for marine, chemical processing, and outdoor applications where moisture and chemicals are prevalent. The Class 3A UNC coarse thread and fully threaded design ensure rapid installation and robust holding power, reducing the risk of thread stripping in soft materials or under vibration. With a flanged button head and hex drive, it offers superior torque transmission and clamping force, minimizing the need for additional components. These features make it an ideal choice for assembly lines, machinery, and structural frameworks requiring durable, high-performance fasteners that maintain integrity over time.

Specification Summary & Compliance

This screw adheres to UNC thread standards with a Class 3A thread fit for precise dimensional accuracy and consistent performance. It is manufactured from 316 stainless steel with a passivated finish, and features a right-hand coarse thread (3/8"-16) and fully threaded 1" length. Compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006), ensuring it meets stringent environmental and safety regulations for industrial use.