S-96877A625 4-40 x 1" FF-S-92, QQ-P-35, MS51959-21, 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.
• Standard 82° countersink angle allows for a flush, professional finish in countersunk holes, reducing snagging and improving aesthetics.
• Coarse UNC threads with Class 2A fit provide easier, faster assembly and reduced risk of cross-threading.
• Phillips No. 1 drive offers widespread tool compatibility and efficient installation with common drivers.
• Full threading along the 1" length ensures maximum grip and holding power throughout the entire engagement.
• Compliance with major industry standards including Fed. Spec. FF-S-92 and SAE AMS2700 guarantees consistent quality and performance.

Professional Applications & Engineering Value

These 4-40 UNC flat head screws are engineered to solve critical fastening challenges in industrial and precision assemblies. The passivated 18-8 stainless steel provides excellent resistance to oxidation and corrosive elements, making them ideal for applications in electronics, aerospace, marine hardware, and outdoor equipment where environmental durability is paramount. The coarse thread design and Class 2A thread fit facilitate quick installation and reduce assembly time, while the flat head with 82° countersink ensures a smooth, flush surface that minimizes protrusion and improves safety. With a 70,000 psi tensile strength and Phillips drive, they deliver robust, vibration-resistant connections in machinery, enclosures, and structural components, ensuring long-term reliability and reduced maintenance.

Specification Summary & Compliance

This screw features a 4-40 UNC coarse thread with Class 2A thread fit for standard dimensional accuracy and ease of assembly. It is manufactured in compliance with Fed. Spec. FF-S-92, QQ-P-35, MS51959-21, and SAE AMS2700, ensuring adherence to rigorous industrial specifications. The product is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, confirming it is free from hazardous substances and safe for use in regulated markets.