S-96880A228 4-40 x 7/16" ASME B18.6.3, FF-S-92, QQ-P-416, MS35206-216, NASM35206 Steel Pan Head Phillips Screws
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 cadmium-plated steel construction for extended service life in demanding environments
- Exceptional holding power with 60,000 psi tensile strength and Rockwell B69 hardness for reliable fastening performance
- Quick installation and removal with No. 1 Phillips drive and fully threaded UNC coarse thread design
- Wide compatibility with Class 2A thread fit ensuring consistent engagement with standard mating components
- Optimized head design with rounded pan profile providing smooth surface finish and reduced snagging
- Regulatory compliance meeting multiple industry standards including ASME B18.6.3 and environmental regulations
- Versatile application range from machinery assembly to electronic enclosures with 7/16" length
Professional Applications & Engineering Value
These 4-40 UNC rounded pan head Phillips screws deliver critical engineering solutions for industrial applications requiring reliable fastening under stress. The cadmium-plated steel construction provides essential corrosion protection in environments exposed to moisture and chemicals, while the 60,000 psi tensile strength ensures joint integrity in vibration-prone assemblies. The fully threaded coarse UNC pattern enables rapid installation and superior grip in materials where fine threads might strip, making them ideal for machine assemblies, electronic chassis, and equipment panels. The combination of Class 2A thread fit and standardized Phillips drive ensures compatibility with existing tooling and components, reducing assembly time and maintenance costs.
Specification Summary & Compliance
This screw features precision 4-40 UNC coarse threads with Class 2A tolerance for consistent fit and performance. Manufactured to ASME B18.6.3 specifications and compliant with Fed. Spec. FF-S-92, QQ-P-416, MS35206-216, and NASM35206 standards. Environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring safe use in various industrial applications.
