S-92210A725 1/2"-13 x 3 1/4" ASME B18.3, ASTM F879 Stainless Steel Hex Drive Flat Head Screws
Stainless Steel Hex Drive 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 18-8 stainless steel and passivated finish, ideal for harsh industrial environments
- Exceptional tensile strength rated at 70,000 psi for reliable performance in heavy-duty applications
- Precision Class 3A thread fit ensures secure fastening and vibration resistance in critical assemblies
- Full threading provides maximum grip length and uniform load distribution across the entire fastener
- Standard 82° countersink angle enables flush mounting for clean, professional finishes
- Hex drive design (5/16") allows for high-torque installation with standard tools
- Comprehensive compliance with ASME B18.3, RoHS 3, and REACH standards for quality assurance
Professional Applications & Engineering Value
These 1/2"-13 UNC flat head screws deliver exceptional engineering value in demanding industrial settings where corrosion resistance and mechanical strength are paramount. The combination of 18-8 stainless steel material and passivated finish creates a robust barrier against chemical exposure and environmental degradation, significantly extending service life in marine, chemical processing, and outdoor applications. The Class 3A thread fit with coarse UNC threading provides superior engagement in both metal and composite materials, while the fully threaded design ensures maximum holding power across the entire 3-1/4" length. The 82° countersink angle and flat head profile facilitate seamless integration into machinery, structural frameworks, and equipment where flush surface mounting is critical for both safety and operational efficiency.
Specification Summary & Compliance
Manufactured to precise dimensional standards with Class 3A thread fit tolerance and UNC coarse threading (1/2"-13). Mechanical properties include Rockwell B55 hardness and 70,000 psi tensile strength. Compliant with ASME B18.3 specifications (ASTM F879), RoHS 3 (2015/863/EU) for restricted substances, and REACH (EC 1907/2006) regulations for chemical safety. The passivated finish enhances corrosion resistance while maintaining dimensional integrity.
