S-93085A838 2-56 x 5/8" FF-S-92, NAS662C2R10 Stainless Steel Phillips Flat Head Screws

Key Features & Benefits at a Glance

• Superior corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
• Exceptional 70,000 psi tensile strength ensures reliable performance in demanding applications
• 100° countersink angle and flat head design provides flush mounting and smooth surface finishes
• Class 2A thread fit with UNC coarse threading delivers secure fastening and easy installation
• Fully threaded 5/8" length maximizes grip and load distribution across the entire fastener
• Phillips drive (No. 1 size) offers familiar, efficient installation with standard tools
• Compliance with Fed. Spec. FF-S-92 (NAS662C2R10) guarantees consistent quality and aerospace-grade reliability

Professional Applications & Engineering Value

These 2-56 UNC flat head Phillips machine screws deliver critical performance in precision assemblies where surface flushness and corrosion resistance are paramount. The passivated 18-8 stainless steel construction prevents oxidation in humid or chemical-exposed environments, while the 70,000 psi tensile strength maintains joint integrity under vibration and load stress. The 100° countersink angle ensures seamless integration into conical seats, eliminating protrusion in machinery, electronics enclosures, and automotive components. With fully threaded coarse spacing and Class 2A fit, these screws provide rapid installation and reliable thread engagement in metals and plastics, reducing assembly time and maintenance cycles.

Specification Summary & Compliance

Manufactured to Class 2A thread tolerance with UNC coarse threads (2-56 size) and right-hand direction. Complies with Fed. Spec. FF-S-92 (NAS662C2R10) for dimensional consistency and performance. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use in regulated industries.