S-90371A019 5/16"-18 ASME B18.2.2 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 corrosion protection with hot-dipped galvanized steel coating, extending service life in harsh industrial environments
- Reliable thread engagement through Class 2B thread fit, ensuring consistent clamping force and vibration resistance
- Industry-standard compatibility with UNC coarse threads (5/16"-18), facilitating quick assembly and interchangeability
- Enhanced durability from Grade 2 strength rating, providing dependable performance for medium-duty applications
- Standard external hex drive design allowing for easy installation with common wrench tools
- Regulatory compliance assurance meeting both ASME B18.2.2 specifications and RoHS 3 environmental standards
- Optimized dimensions (1/2" width, 17/64" height) for balanced strength-to-size ratio in space-constrained assemblies
Professional Applications & Engineering Value
Engineered for demanding industrial environments, these hot-dipped galvanized steel hex nuts provide critical corrosion resistance where moisture, chemicals, or outdoor exposure would compromise ordinary fasteners. The 5/16"-18 UNC coarse thread configuration delivers superior engagement in softer materials and faster assembly in production lines, while the Class 2B thread fit maintains consistent clamping force under vibration. Manufactured to ASME B18.2.2 standards, these Grade 2 hex nuts offer reliable performance in construction equipment, agricultural machinery, electrical enclosures, and structural frameworks where environmental durability and standardized dimensions are essential for maintenance and replacement operations.
Specification Summary & Compliance
This hex nut features precision UNC coarse threads with Class 2B fit tolerance, manufactured in compliance with ASME B18.2.2 specifications. The fastener meets Grade 2 mechanical properties and carries full RoHS 3 (2015/863/EU) compliance for environmental safety. Dimensions include 5/16"-18 thread size, 1/2" width across flats, and 17/64" height, ensuring interchangeability with standard components in industrial fastener systems.
