S-90475A120 5/16"-18 Hex Nuts

Key Features & Benefits at a Glance

• Superior corrosion resistance thanks to the black-oxide steel finish, extending service life in harsh environments.
• Space-saving thin profile with a 3/16" height, ideal for applications with limited clearance.
• Reliable and quick assembly enabled by the coarse UNC thread and Class 2B fit, reducing the risk of cross-threading.
• Secure fastening with standard tools due to the external hex drive and 1/2" width, ensuring easy installation and removal.
• Consistent performance in demanding conditions from the durable steel construction and right-hand thread design.
• Compliance with global safety standards including RoHS 3 and REACH, ensuring safe use in industrial settings.
• Cost-effective inventory management as a common 5/16"-18 thread size, widely used across various machinery and equipment.

Professional Applications & Engineering Value

This 5/16"-18 UNC thin hex nut is engineered to address common challenges in industrial assembly, such as corrosion and space constraints. The black-oxide steel material provides a robust barrier against rust and wear, making it ideal for outdoor machinery, automotive systems, and electrical enclosures exposed to moisture. Its thin hex nut profile allows for secure fastening in tight spaces where standard nuts cannot fit, without compromising strength. The coarse thread and Class 2B thread fit ensure quick, vibration-resistant connections, reducing assembly time and maintenance costs. Suitable for right-hand thread applications with an external hex drive, it offers reliable performance in heavy-duty fastening scenarios, from construction to manufacturing equipment.

Specification Summary & Compliance

This nut features precise Class 2B thread fit per UNC standards, with a thread size of 5/16"-18 and coarse spacing for optimal engagement. Dimensions include a 1/2" width and 3/16" height, adhering to inch system measurements. It complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and industrial reliability without hazardous substances.