S-90471A110 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, extending service life in demanding industrial environments
- Optimized flush mounting with standard 100° countersink angle and flat head design for secure, unobtrusive installations
- Enhanced drive stability through Phillips No. 1 drive system, reducing cam-out during high-torque applications
- Reliable thread engagement with fully threaded UNC coarse spacing, ensuring faster assembly and vibration resistance
- Consistent mechanical performance backed by Rockwell B70 hardness, maintaining structural integrity under load
- Broad compatibility with Class 2A thread fit, facilitating interchangeability with standard UNC components
- Regulatory confidence through full compliance with ASME B18.6.3, RoHS 3, and REACH standards
Professional Applications & Engineering Value
These 2-56 UNC flat head Phillips screws deliver critical solutions for precision assembly challenges where space constraints and surface finish matter. The zinc-plated steel construction provides essential corrosion protection in electronic enclosures, machinery panels, and automotive components, while the fully threaded coarse spacing ensures rapid installation and superior pull-out resistance. The standard 100° countersink angle enables seamless flush mounting in pre-drilled surfaces, eliminating protrusions that could interfere with moving parts or aesthetic requirements. Engineered with Rockwell B70 hardness, these screws maintain clamp load integrity in vibration-prone environments, making them ideal for industrial applications requiring reliable fastening without frequent maintenance.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit for consistent dimensional accuracy. Features UNC coarse threads (2-56 size) with right-hand threading and standard flat head profile. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets.
