S-93085A852 4-40 x 1 1/2" FF-S-92, QQ-P-35, MS24693-C14, 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
- Superior corrosion resistance from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for demanding applications
- Precise Class 2A thread fit providing consistent engagement and reliable fastening performance
- Full threading along the 1-1/2" length offers maximum grip and adjustment flexibility
- Standard 100° countersink angle enables flush mounting for clean, professional finishes
- No. 1 Phillips drive design ensures secure tool engagement and efficient installation
- Comprehensive regulatory compliance including RoHS 3 and REACH for global market acceptance
Professional Applications & Engineering Value
These 4-40 UNC flat head screws deliver critical engineering advantages where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for marine, chemical processing, and outdoor equipment applications. The coarse UNC threading combined with Class 2A tolerance ensures rapid assembly and vibration resistance in machinery, electronics enclosures, and aerospace components. The standard 100° countersink angle and flat head profile create seamless surface finishes while the fully threaded design maximizes load distribution across the entire fastener length.
Specification Summary & Compliance
Manufactured to exacting Class 2A thread fit standards with UNC coarse threading (4-40 size) and precise dimensional control. Complies with multiple industry specifications including Fed. Spec. FF-S-92, QQ-P-35, MS24693-C14, NASM24693, and SAE AMS2700. Meets environmental regulations including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliance. Features right-hand threading and standard inch measurements throughout.
