S-91903A036 1"-8 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
- Superior load distribution thanks to the extra wide hex profile, reducing surface pressure and preventing material damage
- Enhanced corrosion resistance from zinc-plated steel construction, extending service life in harsh industrial environments
- High-strength performance with Grade 5 classification, ensuring reliable fastening under heavy loads and vibration
- Easy installation and removal with standard 1"-8 UNC coarse threading and external hex drive compatible with common tools
- Precise thread engagement through Class 2B thread fit, minimizing cross-threading risks and ensuring secure connections
- Regulatory compliance assurance meeting RoHS 3 and REACH standards for safe use in regulated industries
- Optimal dimensional stability with 1 5/8" width and 63/64" height providing consistent performance across applications
Professional Applications & Engineering Value
Engineered for demanding industrial applications, this heavy-duty hex nut combines Grade 5 zinc-plated steel construction with an extra wide profile to solve critical fastening challenges. The 1"-8 UNC coarse threading ensures rapid assembly in structural steelwork, heavy machinery, and construction equipment where vibration resistance is paramount. The zinc plating provides essential corrosion protection for outdoor applications and harsh environments, while the external hex drive accommodates standard wrenches for efficient maintenance. This nut's enhanced bearing surface distributes clamping force effectively, preventing joint loosening and material deformation in high-stress connections common in manufacturing, infrastructure, and transportation sectors.
Specification Summary & Compliance
This extra wide hex nut features 1"-8 UNC coarse threads with Class 2B thread fit for precise engagement and dimensional accuracy. Manufactured from zinc-plated steel to Grade 5 strength standards, it delivers consistent performance in inch system applications. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and regulatory acceptance across industrial markets.
