S-94485A121 1/4"-20 ASTM A194 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional load distribution due to the extra-wide hex profile, reducing surface pressure and preventing damage to connected materials
• Superior strength for demanding applications with ASTM Grade 7 certification, ensuring reliable performance under high stress and vibration
• Faster installation and reduced cross-threading risk with coarse UNC 1/4"-20 threads, ideal for rapid assembly in industrial settings
• Consistent, secure thread engagement guaranteed by Class 2B thread fit, providing optimal clearances for reliable fastening
• Enhanced durability in harsh environments through ASTM A194 compliant steel construction, resisting corrosion and mechanical wear
• Easy manual or tool-driven installation with the standard external hex drive, compatible with common wrenches for efficient maintenance
• Precision dimensional compliance with inch measurement system, ensuring interchangeability and fit in standardized machinery assemblies

Professional Applications & Engineering Value

Engineered for heavy-duty industrial fastening, this Grade 7 hex nut addresses critical challenges in machinery, construction, and automotive sectors where vibration resistance and long-term reliability are paramount. The ASTM A194 steel construction provides excellent tensile strength and fatigue resistance, preventing loosening under dynamic loads. Its extra-wide profile distributes clamping force more effectively, reducing the risk of material deformation in soft or composite surfaces. The 1/4"-20 UNC coarse thread design ensures quick assembly and superior performance in environments prone to debris or corrosion, minimizing downtime. With a Class 2B thread fit, it offers the ideal balance between ease of installation and secure retention, making it a trusted component for high-strength fastener systems requiring consistent, repeatable performance.

Specification Summary & Compliance

This hex nut adheres to UNC coarse thread standards with a size of 1/4"-20 and Class 2B thread fit for precise, reliable engagement. Manufacturing complies with ASTM A194 material specifications and ASTM Grade 7 strength requirements, ensuring consistent mechanical properties. Dimensional accuracy includes a width of 1/2" and height of 15/64", conforming to inch-based measurement systems. The product meets industry standards for right-hand thread direction and external hex drive compatibility, and is suitable for applications requiring compliance with general industrial fastener regulations, though specific RoHS or REACH status should be verified per batch.