S-93085A851 4-40 x 1 1/4" FF-S-92, QQ-P-35, MS24693-C12, NASM24693, 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior holding power from full threading and 70,000 psi tensile strength, ensuring reliable fastening in demanding applications
- Optimized for flush installation with a standard 100° countersink angle flat head, providing a smooth, secure finish
- Consistent, reliable engagement due to Class 2A thread fit and UNC coarse threading, reducing cross-threading risks
- Enhanced durability and wear resistance from Rockwell B70 hardness, extending service life under mechanical stress
- Broad industry compliance with multiple standards including Fed. Spec. FF-S-92 and SAE AMS2700, ensuring quality and interoperability
- Safe for regulated industries with RoHS 3 and REACH compliance, meeting environmental and health standards
Professional Applications & Engineering Value
Engineered for precision and reliability, these 4-40 UNC flat head screws in passivated 18-8 stainless steel address critical industrial challenges, such as corrosion in marine, chemical, or outdoor settings. The Phillips drive and fully threaded design facilitate quick, secure installations, minimizing assembly time while maximizing clamp load. With a coarse UNC thread and Class 2A fit, they excel in applications where vibration resistance and ease of alignment are paramount, such as machinery, electronics enclosures, and aerospace components. The 100° countersink angle ensures a flush mount, reducing protrusion risks in tight spaces, making them a go-to for OEMs and maintenance teams seeking durable, compliant fasteners.
Specification Summary & Compliance
This screw adheres to precise Class 2A thread fit and UNC coarse thread standards, ensuring dimensional accuracy per specifications like Fed. Spec. FF-S-92, QQ-P-35, MS24693-C12, NASM24693, and SAE AMS2700. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, guaranteeing environmental safety and material integrity for global supply chains.
