S-91253A269 10-32 x 1 3/8" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy 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
- Enhanced Corrosion Resistance with black-oxide coating for reliable performance in demanding industrial environments
- Superior Thread Precision with Class 3A fit ensuring secure, vibration-resistant connections in critical assemblies
- Maximum Fastening Strength from 130,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Efficient Installation with hex drive design providing superior torque transmission and reduced tool slippage
- Optimal Flush Mounting featuring 82° countersink angle and standard flat head profile for seamless surface integration
- Full Thread Engagement along the entire 1-3/8" length for maximum holding power across the fastener
- Regulatory Compliance Assurance meeting ASTM F835 specifications and environmental standards including RoHS 3 and REACH
Professional Applications & Engineering Value
These 10-32 UNF flat head screws deliver exceptional engineering value through their black-oxide alloy steel construction, providing superior protection against corrosion in harsh operating conditions. The fine thread spacing and Class 3A thread fit ensure precise alignment and eliminate loosening in high-vibration environments common to industrial machinery, automotive assemblies, and precision equipment. The combination of fully threaded design and hex drive style enables rapid installation while maintaining consistent clamping force across the entire fastener length. These flat head screws are engineered to solve critical fastening challenges where flush mounting, corrosion resistance, and reliable performance under stress are paramount requirements.
Specification Summary & Compliance
This precision fastener features Class 3A thread fit with UNF fine thread specifications, ensuring tight tolerances for critical applications. Manufacturing complies with ASTM F835 standards, while environmental compliance includes RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements. The 82° countersink angle and standard flat head profile maintain dimensional accuracy for proper seating in mating components.
