S-92949A442 5/16"-18 x 1/4" 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 18-8 Stainless Steel construction, ideal for harsh industrial environments and outdoor applications.
- High-strength performance offering 70,000 psi tensile strength and Rockwell B55 hardness for reliable, heavy-duty fastening.
- Precise, secure thread fit with Class 3A thread tolerance, ensuring minimal backlash and vibration resistance in critical assemblies.
- Easy installation and removal via the 3/16" hex drive, providing a positive grip and reducing tool slippage.
- Full threading for maximum grip length and uniform stress distribution along the entire fastener.
- Low-profile, rounded button head design for a finished appearance and reduced snagging in tight spaces.
- Compliance with RoHS 3 and REACH regulations, ensuring environmental safety and material sustainability.
Professional Applications & Engineering Value
This 5/16"-18 UNC Rounded Head Hex Drive Screw is engineered to address common industrial challenges such as corrosion, vibration loosening, and high-stress fatigue. The 18-8 Stainless Steel material provides excellent resistance to rust and chemical exposure, making it suitable for marine equipment, food processing machinery, and outdoor structural applications. The Class 3A thread fit and coarse UNC threading ensure quick assembly and reliable holding power, even under dynamic loads. With a fully threaded design and 70,000 psi tensile strength, it delivers consistent clamping force and durability in heavy-duty fastening scenarios, reducing maintenance needs and downtime.
Specification Summary & Compliance
This screw adheres to UNC coarse thread standards with a precise Class 3A thread fit for tight tolerances. Key dimensional attributes include a 5/16"-18 thread size, 1/4" length, and 0.547" head diameter. Manufactured in accordance with industry norms for inch-system fasteners, it is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets stringent environmental and safety standards.
