S-91400A110 4-40 x 1/2" FF-S-92, QQ-P-35, MS51957-17 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 of 80,000 psi ensures reliable performance in demanding applications
- Precise Class 2A thread fit guarantees smooth installation and secure fastening
- Fully threaded design provides maximum grip and uniform load distribution
- Standard pan head with Phillips No. 1 drive offers easy installation with common tools
- Coarse UNC threading enables quick assembly and reduced cross-threading risks
- Comprehensive regulatory compliance including RoHS 3 and REACH for global market acceptance
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws deliver outstanding engineering value in industrial applications where corrosion resistance and mechanical strength are critical. The passivated 18-8 stainless steel construction provides exceptional protection against oxidation and chemical exposure, making them ideal for electronics enclosures, machinery assemblies, and outdoor equipment. The combination of coarse UNC threading and Class 2A thread fit ensures rapid installation with reduced assembly time while maintaining secure fastening integrity. The fully threaded design maximizes surface contact for enhanced vibration resistance, solving common loosening issues in dynamic environments. These industrial screws are engineered to maintain performance in temperature-variable conditions and corrosive atmospheres, offering long-term reliability for OEM and MRO applications.
Specification Summary & Compliance
Manufactured to precise Class 2A thread fit tolerances with UNC coarse threading (4-40 size). Complies with Fed. Spec. FF-S-92, QQ-P-35, and MS51957-17 manufacturing standards. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental compliance requirements. Features right-hand thread direction and standard pan head profile with No. 1 Phillips drive size for consistent performance across industrial applications.
