S-91771A839 10-32 x 2 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 mechanical strength with 80,000 PSI tensile strength and Rockwell B80 hardness for reliable load-bearing performance
- Precise flush mounting thanks to the standard 82° countersink angle and flat head design for seamless surface integration
- Optimized drive engagement with Phillips No. 2 drive style ensuring efficient installation and reduced cam-out risk
- Accurate thread compatibility through UNF fine threading and Class 2A fit, providing secure fastening in precision applications
- Versatile partial threading allowing unthreaded shank sections for enhanced shear resistance and alignment control
- Full regulatory compliance meeting ASME B18.6.3 manufacturing standards and environmental regulations (RoHS 3, REACH)
Professional Applications & Engineering Value
These 10-32 UNF flat head screws deliver critical engineering advantages where corrosion resistance, structural integrity, and precise flush mounting are paramount. The passivated 18-8 stainless steel construction provides lasting protection against oxidation and chemical exposure, making them ideal for marine, food processing, and outdoor equipment applications. The UNF fine thread configuration ensures superior vibration resistance and clamping force in thin materials and precision assemblies. With partial threading and 82° countersink angle, these screws prevent material splitting while maintaining clean aesthetic lines in machinery, electronic enclosures, and structural frameworks. The combination of 80,000 PSI tensile strength and Rockwell B80 hardness guarantees dependable performance under dynamic loads and repeated stress cycles.
Specification Summary & Compliance
Manufactured to ASME B18.6.3 specifications with Class 2A thread fit tolerances ensuring consistent interchangeability. The 10-32 UNF fine thread maintains precise engagement while the 2 1/4" length with partial threading provides optimal unthreaded shank coverage. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations confirms material safety and sustainability standards.
