S-91771A927 2-56 x 1/4" 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 with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Exceptional tensile strength of 80,000 psi ensures reliable performance under heavy loads and vibration
- Precision Class 2A thread fit guarantees smooth installation and secure fastening in demanding applications
- Fully threaded coarse UNC design provides maximum holding power and rapid assembly efficiency
- Standard flat head profile with 100° countersink angle enables flush mounting for streamlined surfaces
- Phillips No. 1 drive compatibility offers familiar, efficient installation with standard tools
- Comprehensive regulatory compliance including ASME B18.6.3, RoHS 3, and REACH ensures environmental and safety standards
Professional Applications & Engineering Value
Engineered for precision industrial applications, these 2-56 UNC flat head screws deliver exceptional value in machinery assembly, electronic enclosures, and precision equipment. The passivated 18-8 stainless steel construction provides outstanding corrosion resistance, critical for maintaining integrity in humid or chemically aggressive environments. The fully threaded coarse spacing and Class 2A thread fit ensure rapid installation with minimal cross-threading risk, while the 80,000 psi tensile strength and Rockwell B80 hardness guarantee long-term reliability under mechanical stress. The standard flat head profile with 100° countersink angle enables clean, flush mounting in precision applications where surface protrusion is unacceptable.
Specification Summary & Compliance
These screws feature precision Class 2A thread fit with UNC coarse thread spacing and right-hand threading. Manufacturing complies with ASME B18.6.3 specifications for dimensional accuracy and performance. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across industrial sectors.
