S-92210A075 2-56 x 1/8" ASME B18.3 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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 18-8 stainless steel construction and passivated finish, ideal for harsh environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance under high-stress conditions
- Precise Class 3A thread fit ensures secure, vibration-resistant fastening in critical assemblies
- Hex drive design provides superior torque transmission and prevents tool slippage during installation
- Full threading offers maximum grip length and consistent holding power across the entire fastener
- Standard 82° countersink angle enables flush mounting for clean, professional finishes
- Comprehensive compliance with ASME B18.3 specifications and environmental regulations including RoHS 3 and REACH
Professional Applications & Engineering Value
These 2-56 UNC flat head screws deliver exceptional engineering value in precision industrial applications where space constraints and material compatibility are critical. The 18-8 stainless steel composition combined with passivated finish provides outstanding corrosion resistance, making them ideal for electronics enclosures, medical devices, and marine equipment. The hex drive style ensures maximum torque application without cam-out, while the Class 3A thread fit maintains tight tolerances in vibration-prone environments. The coarse thread spacing facilitates quick assembly and disassembly, reducing installation time in high-volume manufacturing. These flat head fasteners are engineered to solve common industrial challenges including material degradation, fastener loosening, and regulatory compliance requirements.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 standards with Class 3A thread fit precision and UNC thread form. The screws feature Rockwell B55 hardness and maintain dimensional accuracy across all critical parameters including head diameter (0.197"), head height (0.064"), and thread diameter (0.086"). Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global markets. The 82° countersink angle conforms to industry standards for flush mounting applications.
