S-96880A220 4-40 x 5/16" ASME B18.6.3, FF-S-92, QQ-P-416, MS35206-214, 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
- Reliable fastening performance with 60,000 psi tensile strength and Rockwell B69 hardness for high-stress applications
- Quick installation and removal through Phillips No. 1 drive design combined with rounded pan head profile
- Precise thread engagement with Class 2A thread fit ensuring consistent performance and vibration resistance
- Broad compatibility with 4-40 UNC coarse threading meeting standard industrial equipment requirements
- Environmental compliance with RoHS 3 and REACH regulations for safe use across regulated industries
- Full threading coverage along the 5/16" length provides maximum grip strength and load distribution
Professional Applications & Engineering Value
These cadmium-plated steel rounded head screws deliver exceptional value in industrial fastening applications where corrosion resistance and mechanical reliability are critical. The combination of 4-40 UNC coarse threading and Class 2A thread fit ensures secure fastening in vibration-prone environments, while the Phillips No. 1 drive enables efficient installation in confined spaces. The rounded pan head design provides a low-profile finish that minimizes snagging in assembly operations. With 60,000 psi tensile strength and Rockwell B69 hardness, these screws maintain integrity under mechanical stress, making them ideal for electronics enclosures, machinery components, and precision equipment where consistent performance and regulatory compliance are mandatory.
Specification Summary & Compliance
This 4-40 UNC screw features precise Class 2A thread fit with coarse thread spacing, manufactured to exacting dimensional standards. The product fully complies with ASME B18.6.3, Federal Specifications FF-S-92 and QQ-P-416, along with military standards MS35206-214 and NASM35206. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring adherence to the latest regulatory requirements for industrial components.
