S-90273A050 2-56 x 3/16" ASME B18.6.3 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 zinc-plated steel construction for extended service life in demanding environments
- Exceptional 60,000 psi tensile strength ensures reliable fastening under high-stress industrial applications
- Precise Class 2A thread fit provides smooth installation and consistent engagement with mating components
- 82° countersink angle design enables flush mounting for clean, professional finishes
- Rockwell B70 hardness rating maintains thread integrity and prevents stripping during repeated use
- Fully threaded configuration offers maximum grip length and holding power across the entire fastener
- Phillips drive compatibility ensures widespread tool accessibility and efficient installation
Professional Applications & Engineering Value
These 2-56 UNC flat head screws deliver critical engineering solutions where space constraints and surface finish matter. The zinc-plated steel construction provides essential corrosion protection for industrial equipment, electronic enclosures, and machinery assemblies exposed to moderate environmental conditions. The coarse UNC thread profile ensures rapid installation and superior resistance to vibration loosening in dynamic applications. With their 82° countersink angle, these Phillips drive screws sit perfectly flush in prepared holes, eliminating protrusions that could interfere with moving components or compromise aesthetic requirements. The combination of 60,000 psi tensile strength and Rockwell B70 hardness makes these fasteners ideal for applications requiring repeated disassembly and reassembly without thread degradation.
Specification Summary & Compliance
These flat head screws feature precision 2-56 UNC coarse threads with Class 2A thread fit tolerance for consistent performance. Manufacturing complies with ASME B18.6.3 specifications ensuring dimensional accuracy and interchangeability. The products are fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making them suitable for global industrial applications requiring strict material restrictions.
