S-93085A112 4-40 x 5/8" FF-S-92, QQ-P-35, MS24693-C7, 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 with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional mechanical strength with 70,000 psi tensile strength and Rockwell B70 hardness for reliable load-bearing performance
- Precise Class 2A thread fit ensures smooth installation and secure fastening in UNC coarse thread applications
- Optimized flush mounting with 100° countersink angle and standard flat head profile for seamless surface integration
- Enhanced drive stability through No. 1 Phillips drive design, reducing cam-out risks during installation
- Full 5/8" threading provides maximum grip length and uniform stress distribution across engaged components
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for global supply chain compatibility
Professional Applications & Engineering Value
Engineered for precision assemblies requiring flush surface profiles and corrosion-resistant fastening, these 4-40 UNC flat head screws deliver critical performance in aerospace, electronics, and industrial equipment. The passivated 18-8 stainless steel construction prevents galvanic corrosion while maintaining 70,000 psi tensile strength under dynamic loads. The Class 2A thread fit combined with coarse UNC threading ensures rapid installation in sheet metal, plastic housings, and machined components. The 100° countersink angle and fully threaded 5/8" length provide uniform clamping force in limited-clearance applications, reducing assembly time while meeting stringent Fed. Spec. FF-S-92 and MS24693-C7 requirements for mission-critical systems.
Specification Summary & Compliance
Manufactured to Class 2A thread fit tolerances with UNC coarse threading (4-40 size) and right-hand thread direction. Complies with Fed. Spec. FF-S-92, QQ-P-35, MS24693-C7, NASM24693, and SAE AMS2700 specifications. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations.
