S-96177A220 5/16"-18 x 1" ASTM A276 Coupling Nuts
Coupling Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
Finish & Compliance Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with black-oxide steel coating, extending service life in harsh industrial environments
- Precise Class 2B thread fit ensures smooth assembly and reliable connections without cross-threading risks
- Full threading design provides maximum engagement strength for heavy-duty coupling applications
- Coarse UNC thread pattern enables quick installation and removal while maintaining vibration resistance
- ASTM A276 compliance guarantees material integrity and consistent mechanical performance
- Right-hand threading standardization ensures compatibility with common industrial components
- Regulatory compliance with RoHS 3 and REACH meets global environmental and safety standards
Professional Applications & Engineering Value
This 5/16"-18 UNC coupling nut delivers exceptional performance in demanding industrial applications where extended fastener length is required. The black-oxide steel construction provides superior corrosion protection, making it ideal for machinery, structural frameworks, and equipment subjected to moisture or chemical exposure. The fully threaded design with Class 2B thread fit ensures maximum thread engagement throughout the entire 1" length, distributing load evenly and preventing stress concentration. The coarse UNC threading maintains reliability in high-vibration environments while facilitating rapid assembly in production lines. Engineered to ASTM A276 specifications, this coupling nut offers consistent dimensional accuracy and mechanical properties critical for precision engineering applications.
Specification Summary & Compliance
This coupling nut features 5/16"-18 UNC coarse threads with Class 2B thread fit tolerance, 27/64" OD, and 1" length. Manufactured in compliance with ASTM A276 material standards, it meets RoHS 3 (2015/863/EU) with exemption 6(a) for lead as an alloying element in steel and is REACH (EC 1907/2006) compliant with 233 SVHCs as of 01/17/2023. The fully threaded, right-hand design ensures standardized performance across industrial applications.
