S-91771A070 1-64 x 1/2" 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 in demanding applications
- Precision Class 2A thread fit provides consistent engagement and reduces cross-threading risks
- 82° countersink angle enables flush mounting for clean, professional finishes
- Fully threaded design maximizes grip length and load distribution across the entire fastener
- Rockwell B80 hardness maintains structural integrity under repeated stress and vibration
- Phillips drive compatibility with No. 0 size ensures common tool accessibility and efficient installation
Professional Applications & Engineering Value
These 1-64 UNC flat head Phillips screws deliver critical performance advantages for industrial assembly applications where corrosion resistance and structural integrity are paramount. The passivated 18-8 stainless steel construction provides excellent protection against oxidation and chemical exposure, making them ideal for marine, food processing, and outdoor equipment applications. The UNC coarse threading with Class 2A fit ensures rapid installation while maintaining vibration resistance, significantly reducing assembly time in high-volume production environments. The combination of 80,000 psi tensile strength and standardized 82° countersink angle allows for secure, flush mounting in precision machinery, electronic enclosures, and structural components where surface finish and reliability are critical engineering considerations.
Specification Summary & Compliance
Manufactured to exacting ASME B18.6.3 specifications with Class 2A thread fit tolerance for consistent performance. These fully threaded fasteners feature 1-64 UNC coarse threads and comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations. The standard 82° countersink angle and flat head profile ensure proper seating in conforming counterbored holes, while the Rockwell B80 hardness rating guarantees durability across repeated installation cycles.
