S-91771A951 8-32 x 5/8" 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
- Exceptional corrosion resistance with passivated 18-8 stainless steel construction, ideal for harsh industrial environments
- Superior mechanical strength with 80,000 psi tensile strength and Rockwell B80 hardness for reliable load-bearing performance
- Effortless installation using the Phillips No. 2 drive design, reducing assembly time and tool slippage
- Secure flush mounting with a standard 100° countersink angle and flat head profile for smooth surface finishes
- Optimized thread engagement through fully threaded UNC coarse threads with Class 2A fit, ensuring vibration resistance
- Broad compatibility with right-hand threading and inch system measurements for versatile North American applications
- Regulatory peace of mind by meeting ASME B18.6.3, RoHS 3, and REACH standards for safety and environmental compliance
Professional Applications & Engineering Value
Engineered for demanding industrial fastening scenarios, this 8-32 UNC flat head screw addresses critical challenges like material degradation and joint failure. The passivated 18-8 stainless steel offers excellent resistance to oxidation and chemical exposure, prolonging service life in machinery, electrical enclosures, and outdoor equipment. Its coarse thread design enhances grip in softer materials or where vibration is a concern, while the fully threaded body distributes stress evenly. The Phillips No. 2 drive and 100° countersink angle enable quick, flush installations, reducing project delays. Ideal for heavy-duty assemblies requiring 80,000 psi tensile strength, it ensures dependable performance under mechanical stress without compromising on regulatory adherence.
Specification Summary & Compliance
This screw maintains precise Class 2A thread fit per UNC standards, with dimensional accuracy in the inch system (e.g., 5/8" length, 8-32 thread size). Manufacturing follows ASME B18.6.3 specifications for consistency and reliability. It is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it is free of hazardous substances and safe for industrial and international use.
