S-95140A119 5/16"-18 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 tensile strength from Grade 5 steel construction ensures reliable performance in high-stress applications and prevents premature failure.
- Left-hand threading provides secure fastening in specialized assemblies where standard right-hand threads could loosen from counter-rotational forces.
- Coarse UNC thread profile offers quicker installation and reduced cross-threading risk compared to fine threads.
- Precise Class 2B thread fit guarantees smooth engagement with mating components while maintaining vibration resistance.
- Standard external hex drive design allows for easy installation and removal using common wrenching tools.
- Full environmental compliance with RoHS 3 and REACH standards ensures safe use in regulated industries.
- Durable steel material provides excellent corrosion resistance and long-term reliability in industrial environments.
Professional Applications & Engineering Value
This Grade 5 steel hex nut with left-hand UNC coarse threading delivers critical engineering solutions for applications requiring reverse-thread security. The 5/16"-18 thread size with Class 2B fit ensures precise mating with corresponding bolts while the external hex drive facilitates efficient installation in confined spaces. Manufactured from medium-carbon steel, this fastener provides superior strength-to-weight ratio for heavy-duty industrial applications including machinery, automotive systems, and equipment where vibration-induced loosening is a concern. The left-hand thread direction specifically addresses rotational forces in moving components, making it ideal for applications where standard right-hand threads would naturally unscrew during operation.
Specification Summary & Compliance
This hex nut features 5/16"-18 UNC coarse threads with Class 2B thread fit per ASME B1.1 standards, ensuring dimensional accuracy and proper engagement. The 1/2" width across flats and 17/64" height provide standard wrenching surfaces. Manufactured to Grade 5 strength specifications with full compliance to RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations for hazardous substance restrictions.
