S-90585A128 6-32 x 9/16" ASME B18.3, ASTM F879 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
• High-strength performance with 70,000 psi tensile strength and Rockwell B55 hardness, ensuring reliable load-bearing capacity and resistance to deformation
• Precision thread engagement with Class 3A fit and UNC coarse threads, providing secure fastening and reduced risk of cross-threading
• Efficient installation and removal using the 5/64" hex drive, allowing for high torque application and a flush finish with the standard flat head profile
• Full threading along the 9/16" length for maximum grip and holding power across the entire fastener
• Compliance with major industry standards including ASME B18.3, ensuring dimensional accuracy and interchangeability
• Environmentally responsible manufacturing with RoHS 3 and REACH compliance, meeting global regulatory requirements for hazardous substances

Professional Applications & Engineering Value

These 6-32 UNC flat head screws in 316 stainless steel are engineered to address critical challenges in demanding industrial applications. The combination of a passivated finish and the inherent corrosion resistance of 316 stainless steel makes these hex drive screws ideal for use in marine, chemical processing, and food-grade environments where moisture and corrosive agents are present. The Class 3A thread fit and coarse UNC threads ensure rapid assembly and a secure, vibration-resistant connection, reducing installation time and maintenance needs. The standard flat head profile and 82° countersink angle allow for a flush mount, essential for applications requiring a smooth surface finish and aerodynamic integrity. This design provides exceptional engineering value by enhancing the durability, reliability, and longevity of assembled components.

Specification Summary & Compliance

This product adheres to strict dimensional tolerances, including a Class 3A thread fit for precision and a head diameter tolerance of -0.044" to 0". It is manufactured in compliance with the ASME B18.3 specification (ASTM F879) and meets critical environmental and safety standards, including RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant status, ensuring it is free from hazardous substances and suitable for global markets.