S-91255A286 3/8"-16 x 5" ASTM F835 Steel Button Head Hex-Drive Screws
Steel Button Head Hex-Drive 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 with 120,000 psi tensile strength and Rockwell C39 hardness for reliable performance in demanding applications.
- Superior corrosion resistance provided by the black-oxide finish, extending service life in harsh industrial environments.
- Precise fastening ensured by Class 3A thread fit and UNC coarse spacing, minimizing the risk of loosening under vibration.
- Efficient installation with a 7/32" hex drive and rounded button head design, allowing for quick assembly with standard tools.
- Full threading along the 5" length offers consistent grip and load distribution across the entire fastener.
- Compliance with major standards including ASME B18.3 and ASTM F835, guaranteeing quality and interoperability in professional settings.
- Environmental responsibility through RoHS 3 and REACH compliance, meeting strict regulatory requirements for safe usage.
Professional Applications & Engineering Value
This black-oxide alloy steel screw is engineered to address critical challenges in heavy machinery, construction, and automotive assembly, where vibration resistance and long-term reliability are paramount. The Class 3A UNC thread with coarse spacing ensures quick, secure fastening even in materials prone to stripping, while the rounded head and hex drive facilitate easy access in confined spaces. Its high tensile strength and hardness prevent deformation under extreme loads, making it ideal for structural applications that demand consistent performance. By incorporating fully threaded design and compliant materials, it reduces maintenance needs and enhances operational efficiency in industrial settings.
Specification Summary & Compliance
This product adheres to Class 3A thread fit and UNC coarse spacing standards, ensuring precise dimensional accuracy for reliable fastening. It meets manufacturing specifications per ASME B18.3 and ASTM F835, and is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its suitability for global industrial use without hazardous substances.
