S-91771A929 2-56 x 3/8" 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior holding power with 80,000 psi tensile strength and Rockwell B80 hardness for reliable, long-lasting fastening
- Optimized installation efficiency through fully threaded design and standard 100° countersink angle for flush mounting
- Secure drive engagement with Phillips No. 1 drive style, reducing cam-out risks during high-torque applications
- Precise thread compatibility with 2-56 UNC coarse threads and Class 2A fit, ensuring consistent performance in standard assemblies
- Regulatory compliance assurance meeting ASME B18.6.3 specifications, RoHS 3, and REACH standards for global market acceptance
- Versatile industrial application with flat head profile providing streamlined surfaces in machinery, electronics, and equipment assembly
Professional Applications & Engineering Value
Engineered for demanding industrial fastening applications, these 2-56 UNC flat head screws deliver critical solutions where corrosion resistance and mechanical reliability are paramount. The passivated 18-8 stainless steel construction prevents oxidation in humid or chemical-exposed environments, while the fully threaded design ensures maximum grip length in thin materials and tight spaces. The standard 100° countersink angle enables seamless flush mounting in precision assemblies, eliminating protrusions that could interfere with moving components. With 80000 psi tensile strength and Rockwell B80 hardness, these screws maintain clamp force under vibration and thermal cycling, making them ideal for electronic enclosures, machinery panels, and automated equipment where fastener failure is not an option.
Specification Summary & Compliance
These flat head screws maintain precision Class 2A thread fit per UNC standards with 3/8" length and coarse thread spacing for rapid assembly. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. Environmental compliance is verified through RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) certifications, ensuring restricted substance adherence for international industrial applications.
