S-91771A082 2-56 x 9/16" ASME B18.6.3 Stainless Steel Phillips Flat Head Screws
Stainless 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 from passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
- High mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for demanding industrial applications
- Precision thread engagement through Class 2A UNC coarse threads providing secure fastening and vibration resistance
- Efficient installation with Phillips No. 1 drive design offering reliable torque transfer and reduced cam-out risk
- Flush mounting capability featuring standard 82° countersink angle for smooth surface finishes
- Maximum grip strength from fully threaded design ensuring consistent holding power along the entire 9/16" length
- Regulatory compliance meeting ASME B18.6.3 standards and environmental regulations for global industrial use
Professional Applications & Engineering Value
These 2-56 UNC flat head screws deliver exceptional engineering value in precision assemblies requiring flush surface mounting. The passivated 18-8 stainless steel construction provides outstanding corrosion resistance, making them ideal for electronics enclosures, aerospace components, marine equipment, and industrial machinery exposed to moisture or chemicals. The Phillips No. 1 drive ensures reliable installation in confined spaces, while the fully threaded design maximizes pull-out strength in thin materials. The 82° countersink angle creates seamless integration with standard chamfered holes, preventing protrusion issues in sensitive applications. These industrial screws solve critical fastening challenges where both mechanical performance and environmental durability are paramount.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit for consistent assembly performance. The UNC coarse thread profile ensures reliable engagement in various materials. Compliant with ASME B18.6.3 specifications for dimensional accuracy and mechanical properties. Meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, confirming suitability for global industrial markets and restricted substance compliance.
