S-91253A031 0-80 x 1/4" 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 holding power with 130,000 psi tensile strength for reliable performance in demanding applications.
- Superior corrosion resistance from the black-oxide finish on alloy steel, extending service life in industrial environments.
- Precise, secure fastening ensured by the Class 3A thread fit, minimizing the risk of loosening under vibration.
- Easy installation and removal with the standard 82° countersink angle and hex drive for a flush, professional finish.
- High durability and wear resistance due to Rockwell C39 hardness, maintaining integrity through repeated use.
- Broad compatibility with UNF fine threads, making them ideal for precision equipment and machinery assemblies.
- Full regulatory compliance with ASME B18.3, ASTM F835, RoHS 3, and REACH, ensuring safety and environmental standards are met.
Professional Applications & Engineering Value
This 0-80 UNF flat head screw is engineered to solve critical fastening challenges in industrial and precision assemblies. The black-oxide alloy steel construction provides excellent resistance to corrosion and wear, which is vital for maintaining component integrity in harsh environments. With a fully threaded design and Class 3A thread fit, it offers superior grip and vibration resistance, reducing the need for frequent maintenance. The 82° countersink angle and hex drive allow for easy, flush mounting in applications like aerospace, electronics, and machinery, where space is limited and reliability is paramount. These screws deliver consistent performance, helping to prevent assembly failures and enhance operational efficiency.
Specification Summary & Compliance
This product features precise UNF fine threads with a Class 3A fit for tight tolerances and optimal performance. It complies with ASME B18.3 and ASTM F835 manufacturing standards, ensuring consistent quality and reliability. Additionally, it is RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting stringent environmental and safety regulations for industrial use.
