S-91771A919 0-80 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, ensuring long-term reliability in harsh environments
- Exceptional mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for demanding applications
- Precise thread engagement with Class 2A thread fit and UNF fine threads, providing secure fastening and vibration resistance
- Optimized flush mounting featuring a standard flat head profile with 100° countersink angle for seamless surface integration
- Efficient installation with Phillips No. 0 drive design, enabling quick assembly while minimizing tool slippage
- Full-threaded design ensuring maximum grip length and uniform stress distribution along the entire 1/4" length
- Regulatory compliance meeting ASME B18.6.3 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
This 0-80 UNF flat head screw delivers critical engineering solutions where space constraints and corrosion resistance are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making it ideal for electronic enclosures, precision instruments, and aerospace components. The fine thread spacing and Class 2A thread fit ensure superior vibration resistance in dynamic environments, while the 100° countersink angle allows for flush mounting in thin materials without compromising structural integrity. The combination of 80,000 psi tensile strength and fully threaded design provides reliable performance in high-stress applications where fastener failure is not an option.
Specification Summary & Compliance
Manufactured to exacting standards with Class 2A thread fit tolerance and UNF (Unified National Fine) thread form ensuring precise compatibility. The screw meets ASME B18.6.3 dimensional specifications and maintains compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The right-hand thread direction and standard flat head profile adhere to industry norms for consistent performance across industrial applications.
