S-91253A162 6-40 x 1/2" 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 of 130,000 psi ensures reliable performance in high-stress applications, reducing the risk of fastener failure.
- Corrosion-resistant Black-Oxide finish on Alloy Steel provides enhanced durability and longevity in demanding industrial environments.
- Precision Class 3A thread fit guarantees tight, secure connections with minimal backlash, ideal for fine thread requirements.
- 82° countersink angle allows for a flush, low-profile installation, improving aesthetics and reducing snag hazards.
- Fully threaded design offers maximum grip and holding power along the entire length for superior assembly integrity.
- Hex drive (5/64") enables easy installation and removal with standard tools, speeding up maintenance and assembly processes.
- Compliance with ASME B18.3 and ASTM F835 ensures adherence to industry standards, providing confidence in quality and reliability.
Professional Applications & Engineering Value
These 6-40 UNF flat head screws are engineered to address critical challenges in precision assemblies, such as in electronics, machinery, and automotive sectors. The Black-Oxide Alloy Steel construction offers excellent resistance to corrosion and wear, extending service life in harsh conditions. With a fine thread spacing and Class 3A fit, they deliver superior vibration resistance and leak-proof sealing, minimizing loosening in dynamic applications. The 82° countersink angle and flat head design ensure a smooth, flush finish, reducing protrusions and enhancing safety. Ideal for industrial fasteners requiring high tensile strength and compliance, these screws provide reliable performance in tight-tolerance environments, supporting efficient and durable installations.
Specification Summary & Compliance
This product features a 6-40 UNF thread size with fine thread spacing and Class 3A thread fit for precise dimensional accuracy. It meets ASME B18.3 and ASTM F835 manufacturing specifications, ensuring consistent quality. Additionally, it is compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, supporting environmental and safety standards in global supply chains.
