S-91253A209 8-32 x 2" 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 Tensile Strength – Withstands up to 130,000 psi for reliable performance in high-stress industrial assemblies.
- Superior Corrosion Resistance – Black-oxide coating on alloy steel provides enhanced durability in harsh environments.
- Precise Thread Fit – Class 3A thread tolerance ensures secure, vibration-resistant connections with minimal risk of loosening.
- Optimized Drive Engagement – 3/32" hex drive allows for efficient installation and removal with standard tools.
- Versatile Partial Threading – 7/8" minimum thread length offers flexibility for varied material thicknesses and clamping applications.
- Standardized Countersink Design – 82° flat head profile facilitates flush mounting, reducing snagging and improving aesthetics.
- High Hardness Rating – Rockwell C39 hardness ensures long-term wear resistance and thread integrity.
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these 8-32 UNC flat head screws deliver critical performance advantages. The black-oxide alloy steel construction provides superior corrosion protection, extending service life in machinery, automotive, and outdoor equipment applications. The coarse thread spacing and Class 3A thread fit enable rapid assembly while maintaining vibration resistance in high-cycle operations. The 82° countersink angle ensures seamless integration with standard chamfered holes, eliminating protrusions that could compromise safety or functionality. These partially threaded fasteners are particularly valuable in applications requiring precise clamp load distribution across multiple material layers.
Specification Summary & Compliance
Manufactured to ASTM F835 specifications with Class 3A thread fit and UNC coarse thread profile. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards. Inch system measurements include 2" length with 0.164" thread diameter and 7/8" minimum thread engagement length.
