S-91771A063 1-64 x 1/8" 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
- Superior corrosion resistance with passivated 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for demanding industrial applications
- Precision thread engagement through Class 2A fit and fully threaded UNC coarse spacing, providing secure fastening and vibration resistance
- Flush mounting capability with undercut flat head profile and 82° countersink angle for seamless surface integration
- Optimized drive performance with Phillips No. 0 drive style, enabling efficient installation and reduced cam-out risk
- Regulatory compliance assurance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
- Compact design versatility with 1/8" length and 0.137" head diameter for space-constrained assemblies
Professional Applications & Engineering Value
Engineered for precision-critical applications, these 1-64 UNC flat head screws deliver exceptional performance in electronics, instrumentation, and machinery assemblies. The passivated 18-8 stainless steel construction provides superior corrosion resistance, eliminating failure points in humid or chemically aggressive environments. The fully threaded coarse spacing ensures maximum thread engagement in thin materials, while the undercut flat head profile with 82° countersink angle creates flush surfaces without protrusion interference. The Phillips No. 0 drive offers reliable torque transmission for high-volume assembly operations. These screws solve common industrial challenges including material compatibility, vibration loosening, and regulatory compliance requirements across automotive, aerospace, and marine sectors.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 standards with Class 2A thread fit for consistent dimensional accuracy. Features UNC coarse thread spacing with right-hand threading and complete compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The 82° countersink angle and undercut head profile meet industrial specifications for flush mounting applications.
