S-90790A185 5/16"-18 Cap Nuts
Cap 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
- Enhanced corrosion resistance with black-oxide steel coating, ideal for harsh industrial environments and extending service life.
- Superior load distribution due to the extra-wide high profile design, reducing surface pressure and preventing material damage.
- Reliable thread engagement with Class 2B thread fit, ensuring smooth assembly and minimizing cross-threading risks.
- Easy installation and removal featuring an external hex drive for standard tool compatibility and efficient maintenance.
- Robust coarse threading (UNC) providing strong holding power in various materials, resistant to vibration loosening.
- Compliance with environmental standards including REACH and RoHS 3, supporting sustainable and safe industrial practices.
- Optimal thread depth of 3/8" for secure fastening in deep applications, enhancing connection stability.
Professional Applications & Engineering Value
This 5/16"-18 UNC cap nut is engineered with black-oxide steel and an extra-wide high profile to address common industrial challenges like corrosion, vibration, and high-stress loads. The coarse thread design ensures quick assembly and reliable performance in machinery, automotive, and construction sectors, where durability is critical. Its Class 2B thread fit guarantees precision and reduces the risk of stripping, while the external hex drive allows for easy torque application with standard wrenches. Ideal for applications requiring heavy-duty fastening, this nut provides long-term reliability and meets stringent industry standards for safety and efficiency.
Specification Summary & Compliance
This cap nut adheres to UNC coarse thread standards with a Class 2B thread fit for precise dimensional accuracy. It complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) regulations, including exemption 6(a)-I for lead in steel alloys, ensuring environmental and safety conformity. The specifications include a thread size of 5/16"-18, width and height of 5/8", and a thread depth of 3/8", manufactured to support reliable performance in industrial fastening applications.
