S-96877A198 4-40 x 3/16" FF-S-92, QQ-P-35, MS51959-12, SAE AMS2700 Stainless Steel Phillips Flat Head Screws
Stainless Steel Phillips Flat Head Screws
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Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
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Key Features & Benefits at a Glance
- Superior corrosion resistance with passivated 18-8 stainless steel, ideal for harsh environments and long-term reliability.
- High tensile strength of 70,000 psi ensures secure, durable fastening under demanding mechanical loads.
- 82° undercut flat head design provides a flush, low-profile finish that minimizes protrusion and improves aesthetics.
- Class 2A thread fit with UNC coarse threading offers easy assembly, reduced cross-threading risk, and consistent performance.
- Phillips drive (No. 1 size) allows for efficient installation with common tools, enhancing workflow speed.
- Full threading along the 3/16" length maximizes grip and holding power across the entire engagement area.
- Compliance with Fed. Spec. FF-S-92, QQ-P-35, MS51959-12, and SAE AMS2700 guarantees adherence to rigorous industrial standards for quality and safety.
Professional Applications & Engineering Value
These 4-40 UNC flat head screws are engineered to address critical challenges in industrial and precision applications where corrosion resistance, strength, and reliable seating are paramount. The passivated 18-8 stainless steel construction effectively combats rust and chemical exposure, making these screws ideal for use in electronics, aerospace assemblies, and marine equipment. The undercut flat head with an 82° countersink angle ensures a smooth, flush mount that prevents snagging and distributes stress evenly, reducing the risk of material damage. Combined with a coarse UNC thread and Class 2A fit, they provide quick, secure fastening in metals and plastics, minimizing installation errors and enhancing operational efficiency in automated or manual settings.
Specification Summary & Compliance
This product meets precise dimensional standards, including a Class 2A thread fit for consistent tolerance and UNC coarse threading (4-40 size) per common industrial requirements. Manufacturing and material specifications align with Fed. Spec. FF-S-92, QQ-P-35, MS51959-12, and SAE AMS2700. Additionally, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and restricted substance adherence for global supply chains.
