S-90212A600 7/8"-9 ASTM A194 Hex Nuts
Hex Nuts
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Basic Information
Dimension Parameters
Thread Parameters
Head Parameters
Material & Strength Parameters
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Key Features & Benefits at a Glance
- Superior corrosion resistance with Blue PTFE coating that protects against harsh chemicals and environmental exposure
- Exceptional durability from ASTM Grade 2H steel construction, ensuring reliable performance in heavy-duty applications
- Easy installation and removal thanks to the extra wide external hex profile that provides better tool engagement
- Secure fastening with Class 2B thread fit that maintains consistent clamping force under vibration and load
- Quick assembly enabled by coarse UNC threading that reduces cross-threading risks and speeds up installation
- Industry compliance meeting ASTM A194 specifications for high-pressure and high-temperature service conditions
- Optimal load distribution through the extra wide profile that minimizes surface pressure and material deformation
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these Blue PTFE-coated hex nuts solve critical challenges in chemical processing, marine, and heavy machinery applications. The PTFE coating creates a non-stick, chemically inert barrier that prevents galvanic corrosion and resists aggressive substances, significantly extending service life in corrosive conditions. The extra wide profile distributes clamping force more effectively, reducing the risk of joint loosening under dynamic loads and vibration. With coarse UNC threading and Class 2B thread fit, these nuts provide reliable engagement even in applications where fine alignment is challenging, making them ideal for structural connections, pipeline systems, and equipment requiring frequent maintenance access.
Specification Summary & Compliance
This 7/8"-9 UNC hex nut features Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and interchangeability. Manufactured from ASTM Grade 2H steel with Blue PTFE coating for enhanced corrosion protection. Complies with ASTM A194 specifications for high-strength applications and meets RoHS and REACH environmental compliance requirements. Dimensions include 1-7/16" width and 55/64" height with right-hand thread direction for standard industrial assembly.
