S-91400A114 4-40 x 5/8" FF-S-92, QQ-P-35, MS51957-18 Stainless Steel Pan Head Phillips Screws
Stainless Steel Pan Head Phillips 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 tensile strength rated at 80,000 psi for reliable performance in demanding applications
- Optimized drive engagement with Phillips No. 1 drive for secure installation and reduced cam-out risk
- Precision thread fit with Class 2A UNC coarse threads ensuring smooth assembly and consistent fastening
- Full threading design provides maximum grip length and uniform load distribution across the entire fastener
- Comprehensive compliance with RoHS 3 and REACH regulations for environmentally responsible manufacturing
- Standard pan head profile offers excellent bearing surface and clean aesthetic appearance
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws deliver critical performance advantages in precision assembly applications. The passivated 18-8 stainless steel construction provides exceptional resistance to corrosion and oxidation, making them ideal for electronics enclosures, instrumentation, and machinery exposed to moisture or chemicals. The coarse thread design ensures rapid installation and superior holding power in various materials, while the fully threaded configuration maximizes engagement in both thin and thick materials. Engineered to meet stringent Fed. Spec. FF-S-92 and MS51957-18 standards, these screws maintain dimensional consistency and reliability in critical industrial and manufacturing environments where vibration resistance and long-term performance are essential.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threads (4-40 size) and right-hand threading. Complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-18 manufacturing specifications. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance standards. Features 5/8" length with standard pan head profile and Phillips No. 1 drive size for consistent performance across industrial applications.
