S-97763A286 5/16"-18 x 2" ASME B18.3 Stainless Steel Button Head Hex-Drive Screws
Stainless 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
- Superior corrosion resistance with Black-Oxide coated 18-8 Stainless Steel, ideal for harsh industrial environments and outdoor applications.
- Exceptional tensile strength of 70,000 psi ensures reliable, long-lasting fastening under high-stress conditions.
- Precise Class 3A thread fit guarantees secure mating with nuts and tapped holes, minimizing the risk of loosening.
- Coarse UNC threading allows for quicker installation and reduced cross-threading in a wide range of materials.
- Convenient hex drive (3/16") provides high torque transmission and easy installation with standard tools.
- Rounded button head design offers a low-profile, finished appearance while reducing the risk of snagging.
- Full compliance with major industry standards (ASME B18.3) and environmental regulations (RoHS 3, REACH) for assured quality and safety.
Professional Applications & Engineering Value
This Black-Oxide 18-8 Stainless Steel Rounded Head Screw is engineered to solve critical challenges in demanding industrial applications. The combination of a corrosion-resistant material and a protective Black-Oxide finish significantly extends service life in environments prone to moisture and chemicals, reducing maintenance frequency and replacement costs. Its high tensile strength and Rockwell B55 hardness ensure the fastener maintains integrity under vibration and load, preventing joint failure in machinery, automotive assemblies, and construction frameworks. The coarse UNC thread and Class 3A fit provide excellent engagement in both metals and plastics, speeding up assembly lines while ensuring a reliable, vibration-resistant connection.
Specification Summary & Compliance
This screw features a 5/16"-18 UNC coarse thread with a precision Class 3A thread fit for optimal engagement. It is fully threaded and measures 2" in length. Manufacturing and dimensional specifications conform to ASME B18.3. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations.
