S-91253A089 2-64 x 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
- Exceptional tensile strength of 130,000 PSI provides reliable performance in high-stress applications, reducing the risk of fastener failure.
- Class 3A thread fit ensures precise, tight engagement for vibration resistance and secure assemblies in fine-threaded components.
- Black-oxide finish on alloy steel offers enhanced corrosion resistance, extending service life in demanding industrial environments.
- Hex drive design (0.050") allows for high-torque installation with standard tools, minimizing slippage and improving installation efficiency.
- Fully threaded UNF configuration delivers maximum grip length and uniform load distribution along the entire fastener.
- 82° countersink angle enables a flush, low-profile fit for streamlined assemblies and reduced snagging risks.
- Rockwell C39 hardness maintains dimensional stability and wear resistance under repeated use.
Professional Applications & Engineering Value
Engineered for precision-critical assemblies, these 2-64 UNF flat head screws address common industrial challenges like vibration loosening and corrosion. The black-oxide alloy steel construction combats environmental degradation, while the fine thread (UNF) and Class 3A fit provide superior holding power in thin materials and tight-tolerance applications—such as electronics enclosures, aerospace components, and precision machinery. The hex drive ensures efficient torque transfer during installation, reducing assembly time and tool wear. Ideal for OEMs and maintenance teams requiring high-strength fasteners that meet rigorous industry standards without compromising on durability or compliance.
Specification Summary & Compliance
This screw adheres to Class 3A thread tolerances under the UNF standard, ensuring precise fit. Manufacturing and material specifications comply with ASTM F835 for consistent quality. The product is confirmed RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) compliant, supporting safe and environmentally responsible sourcing for global supply chains.
