S-93085A539 1/4"-20 x 5/8" FF-S-92, QQ-P-35, MS24693-C95, NASM24693, SAE AMS2700 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments.
• Exceptional tensile strength of 70,000 psi provides reliable performance under high-stress applications.
• Optimized flush mounting with a 100° countersink angle and standard flat head profile for seamless, secure installations.
• Effortless installation and removal thanks to the Phillips No. 3 drive and UNC coarse threading, reducing assembly time.
• Precise thread fit with Class 2A tolerance ensures consistent engagement and reduces the risk of cross-threading.
• Full threading along the 5/8" length offers maximum grip and holding power in various material thicknesses.
• Comprehensive compliance with major industry standards guarantees quality and interoperability in regulated sectors.

Professional Applications & Engineering Value

This 1/4"-20 x 5/8" flat head screw is engineered to address critical challenges in industrial assembly, such as vibration resistance and environmental durability. The passivated 18-8 stainless steel provides excellent protection against corrosion, making it ideal for applications in marine, chemical processing, and outdoor equipment where moisture and chemicals are prevalent. The UNC coarse thread and Class 2A fit ensure quick, reliable fastening in metals and plastics, reducing the risk of stripping. With a 100° countersink angle, it sits flush with surfaces, preventing snagging and improving aesthetics in consumer electronics, automotive panels, and machinery. Its fully threaded design and 70,000 psi tensile strength deliver robust performance in dynamic loads, ensuring your assemblies remain secure and maintenance-free.

Specification Summary & Compliance

This fastener adheres to precise dimensional standards, including Class 2A thread fit and UNC coarse threading for consistent performance. It meets stringent specifications such as Fed. Spec. FF-S-92, QQ-P-35, MS24693-C95, NASM24693, and SAE AMS2700, ensuring reliability in aerospace, military, and industrial applications. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmentally responsible and safe usage.