S-91253A190 8-32 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
- Exceptional Durability: Made from Black-Oxide Alloy Steel with a hardness of Rockwell C39, ensuring long-lasting performance in demanding industrial environments.
- Superior Tensile Strength: Withstands up to 130,000 psi tensile strength, providing reliable fastening for heavy-duty applications without failure.
- Precision Thread Fit: Class 3A thread fit offers tighter tolerances for secure, vibration-resistant connections in critical assemblies.
- Corrosion Resistance: The black-oxide coating enhances corrosion resistance, extending the screw's lifespan in harsh conditions.
- Efficient Installation: Hex drive (3/32") allows for easy, high-torque installation with standard tools, reducing assembly time.
- Optimal Flush Mounting: 82° countersink angle and flat head design enable a smooth, flush finish for streamlined surfaces.
- Full Thread Engagement: Fully threaded design ensures maximum grip and load distribution along the entire length.
Professional Applications & Engineering Value
These 8-32 UNC flat head screws are engineered to address common industrial challenges, such as vibration loosening and corrosion in machinery, automotive, and electronics assemblies. The Black-Oxide Alloy Steel construction, combined with Class 3A thread fit, provides a robust solution for applications requiring high strength and precision. The coarse thread spacing and fully threaded design enhance grip in various materials, while the 82° countersink angle ensures a secure, flush fit that minimizes protrusion risks. Ideal for heavy-duty fastening, these screws help maintain structural integrity and reduce maintenance needs in demanding environments.
Specification Summary & Compliance
This screw features precise UNC coarse threads with a Class 3A thread fit for accurate engagement, and dimensions include a 5/16" length and 3/32" hex drive. It complies with ASTM F835 specifications for quality assurance and meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) standards, ensuring environmental and safety regulations are upheld.
