S-91253A201 8-32 x 1 1/4" ASTM F835 Alloy Steel Hex Drive Flat Head Screws
Alloy Steel Hex Drive Flat Head Screws
Image may differ from product. See technical specification for details.
Basic Information
Head Parameters
Dimensions
Thread Parameters
Tip & Drive Parameters
Material & Strength
Temperature & Environment
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide coating for extended service life in demanding industrial environments
- Exceptional mechanical strength with 130,000 psi tensile strength and Rockwell C39 hardness for heavy-duty applications
- Precise Class 3A thread fit ensuring reliable engagement and vibration resistance in critical assemblies
- Optimized partial threading with 7/8" minimum thread length for controlled clamping force and material savings
- Standard 82° countersink angle providing flush mounting and clean aesthetic finish
- Hex drive compatibility with 3/32" drive size for secure installation and high torque transmission
- Comprehensive regulatory compliance meeting ASTM F835, RoHS 3, and REACH standards for global acceptance
Professional Applications & Engineering Value
These 8-32 UNC flat head screws deliver exceptional engineering value through their black-oxide alloy steel construction and Class 3A thread fit. The combination of 130,000 psi tensile strength and Rockwell C39 hardness ensures reliable performance in high-stress applications where fastener failure is not an option. The partial threading design prevents over-tightening while maintaining optimal clamp load, making them ideal for precision equipment, machinery assemblies, and structural frameworks. The 82° countersink angle and flat head profile create seamless surfaces in automotive, aerospace, and industrial manufacturing applications where both performance and aesthetics matter. The coarse UNC thread provides quick assembly and superior resistance to vibration loosening in demanding operating conditions.
Specification Summary & Compliance
Manufactured to exacting standards with Class 3A thread fit precision and UNC coarse thread specifications. These 1-1/4" flat head screws feature right-hand threading and maintain dimensional accuracy per industry requirements. Full compliance with ASTM F835 manufacturing standards, RoHS 3 (2015/863/EU) environmental directives, and REACH (EC 1907/2006) regulations ensures material safety and global market acceptance for industrial and commercial applications.
