S-91400A101 4-40 x 1/8" FF-S-92, QQ-P-35, MS51957-11 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 for long-term reliability in harsh environments
- Exceptional mechanical strength with 80,000 psi tensile strength to withstand high-stress applications
- Optimized drive engagement through Phillips No. 1 drive for secure installation and reduced cam-out risk
- Full-threaded design ensures maximum grip and uniform load distribution across the entire fastener length
- Precision thread fit with Class 2A UNC coarse threads for smooth assembly and reliable performance
- Versatile rounded pan head profile provides a finished appearance while accommodating standard tools
- Regulatory compliance assurance meeting Fed. Spec. FF-S-92, QQ-P-35, MS51957-11 standards with RoHS 3 and REACH compliance
Professional Applications & Engineering Value
These 4-40 UNC machine screws deliver critical performance advantages for precision assembly applications where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making these rounded pan head screws ideal for electronics enclosures, instrumentation, marine equipment, and food processing machinery. The fully threaded design ensures maximum engagement in shallow tapped holes, while the Phillips drive style offers familiar, efficient installation. With their coarse UNC thread pattern and Class 2A thread fit, these fasteners provide reliable performance in vibration-prone environments, reducing maintenance requirements and extending service life in demanding industrial settings.
Specification Summary & Compliance
This fastener features precision 4-40 UNC coarse threads with Class 2A thread fit for consistent assembly performance. Manufacturing complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-11 standards, ensuring dimensional accuracy and material quality. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for global industrial applications with strict environmental requirements.
