S-91253A145 6-32 x 5/16" 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
- Superior corrosion resistance with black-oxide coating on alloy steel for extended service life in demanding environments
- Exceptional mechanical strength with 130,000 psi tensile rating and Rockwell C39 hardness for high-stress applications
- Precision Class 3A thread fit ensures secure fastening with minimal vibration loosening in critical assemblies
- Full-threaded design provides maximum grip length and uniform load distribution across the entire fastener
- 82° countersink angle enables flush mounting with standard chamfered holes for clean, professional finishes
- Hex drive compatibility with 5/64" tools delivers superior torque transmission and installation efficiency
- Industry-standard compliance with ASME B18.3 and ASTM F835 specifications guarantees interchangeability and reliability
Professional Applications & Engineering Value
These 6-32 UNC flat head hex drive screws deliver critical performance advantages for industrial applications where vibration resistance and flush mounting are essential. The black-oxide alloy steel construction provides superior corrosion protection while maintaining the 130,000 psi tensile strength required for high-stress assemblies. The Class 3A thread fit ensures precise engagement with mating components, reducing the risk of loosening in machinery, electronic enclosures, and precision equipment. The fully threaded coarse UNC pattern enables rapid installation and maximum holding power, while the standard 82° countersink creates seamless surface transitions in automotive, aerospace, and industrial manufacturing applications where both aesthetics and performance matter.
Specification Summary & Compliance
Manufactured to exacting ASME B18.3 and ASTM F835 standards with Class 3A thread tolerance for precision fit. The 6-32 UNC coarse thread configuration with 5/16" length ensures reliable performance in various applications. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, making these screws suitable for global industrial markets and restricted substance-sensitive applications.
