S-90521A038 2"-4 1/2 ASTM A194 Hex Nuts
Hex 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
- Exceptional load distribution due to the extra wide hex profile, reducing surface pressure and preventing material damage
- Superior strength and reliability from ASTM Grade 2H steel construction, ideal for heavy-duty industrial applications
- Easy and quick installation with coarse UNC threads and Class 2B fit, ensuring smooth assembly even in demanding conditions
- Enhanced durability and corrosion resistance through high-quality steel material, extending service life in harsh environments
- Compliance with rigorous industry standards including ASTM A194, guaranteeing consistent performance and safety
- Environmental and regulatory safety with RoHS 3 and REACH compliance, making them suitable for global supply chains
- Optimized for high-stress applications such as construction and machinery, thanks to the robust 3 1/8" width and 1 31/32" height
Professional Applications & Engineering Value
These heavy-duty extra wide hex nuts are engineered to address critical challenges in industrial settings, such as vibration loosening and high tensile stress. Made from ASTM Grade 2H steel, they provide exceptional mechanical strength and fatigue resistance, ensuring secure fastening in construction, machinery, and structural assemblies. The coarse UNC threads and Class 2B thread fit facilitate rapid installation and disassembly, reducing downtime in maintenance operations. With a robust external hex drive and large bearing surface, these nuts distribute clamping force evenly, minimizing the risk of joint failure and enhancing the longevity of connected components in demanding environments.
Specification Summary & Compliance
This product adheres to precise dimensional standards, including a Class 2B thread fit for reliable engagement and UNC coarse threading in sizes from 2" to 4 1/2". Manufactured in compliance with ASTM A194 specifications and ASTM Grade 2H for strength, it ensures consistent performance. Additionally, it meets RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) requirements, confirming environmental and safety adherence for industrial use.
