S-91321A114 4-40 x 1/2" MS35190-225, NASM35190 Steel Phillips Flat Head Screws
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 cadmium plating for extended service life in challenging industrial environments
- High tensile strength of 60,000 PSI ensures reliable fastening under significant mechanical stress
- Full threading design provides maximum grip and uniform load distribution across the entire fastener length
- Standard 82° countersink angle enables flush mounting for clean, professional-looking assemblies
- Class 2A thread fit offers optimal balance between easy assembly and secure fastening retention
- No. 1 Phillips drive allows for efficient installation with common industrial tools
- MS35190-225 compliance guarantees consistent quality and dimensional accuracy for critical applications
Professional Applications & Engineering Value
These cadmium-plated steel flat head screws deliver exceptional performance in demanding industrial settings where corrosion resistance and structural integrity are paramount. The 4-40 UNC coarse thread configuration provides excellent engagement in various materials, while the fully threaded design ensures maximum holding power across the entire fastener length. The standard 82° countersink angle creates seamless, flush-mounted assemblies that eliminate protrusions in precision equipment. Engineered to meet MS35190-225 specifications, these Phillips drive screws offer reliable fastening solutions for machinery, electronic enclosures, and structural components where vibration resistance and long-term durability are critical requirements.
Specification Summary & Compliance
This 4-40 UNC flat head screw features Class 2A thread fit tolerances ensuring proper engagement and assembly ease. The fastener complies with MS35190-225 (NASM35190) specifications governing dimensional accuracy, material properties, and performance characteristics. Manufactured from cadmium-plated steel with coarse threading and right-hand thread direction, these screws maintain consistent quality standards suitable for industrial applications requiring reliable mechanical fastening solutions.
