S-93085A105 4-40 x 3/16" FF-S-92, QQ-P-35, MS24693-C1, 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, ideal for harsh environments and extended service life.
• High tensile strength of 70,000 psi ensures reliable, secure fastening under demanding mechanical loads.
• Rockwell B70 hardness provides excellent durability and resistance to wear and deformation.
• Class 2A thread fit with UNC coarse threading allows for easy, quick assembly and reduced cross-threading risk.
• 100° countersink angle and flat head design enables a flush, low-profile finish for smooth surfaces and aerodynamic applications.
• Phillips drive (No. 1 size) offers widespread tool compatibility and efficient installation.
• Full compliance with Fed. Spec. FF-S-92, MS24693-C1, and other standards guarantees consistent quality and interoperability in regulated industries.

Professional Applications & Engineering Value

These 4-40 UNC flat head Phillips screws are engineered to address critical challenges in precision assembly and corrosive environments. Made from passivated 18-8 stainless steel, they deliver exceptional resistance to oxidation and chemical exposure, making them ideal for aerospace, electronics, and marine applications where reliability is paramount. The coarse thread spacing and Class 2A thread fit facilitate rapid installation while minimizing the risk of stripping, especially in high-vibration settings. With a 100° countersink angle, these screws sit flush with surfaces, preventing snagging and maintaining aerodynamic or aesthetic integrity. Fully threaded and right-hand oriented, they provide uniform clamping force and are compatible with standard Phillips drive tools, streamlining maintenance and reducing downtime in industrial operations.

Specification Summary & Compliance

This product adheres to precise dimensional tolerances, including Class 2A thread fit and UNC coarse thread standards, ensuring consistent performance and interchangeability. It meets rigorous specifications such as Fed. Spec. FF-S-92, QQ-P-35, MS24693-C1, NASM24693, and SAE AMS2700, validating its use in critical applications. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental safety and regulatory requirements in global markets.