S-90519A029 1/4"-20 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
- Left-hand threading provides secure fastening in applications requiring reverse rotation resistance, preventing unintentional loosening under counter-clockwise motion.
- Grade 2 steel construction offers excellent strength and durability for general industrial use, ensuring reliable performance in various environments.
- UNC coarse thread design enables quicker assembly and reduced cross-threading risk, saving time and improving installation efficiency.
- Class 2B thread fit guarantees consistent engagement and smooth operation with standard bolts, minimizing the need for rework.
- Standard external hex drive profile allows for easy installation and removal with common wrenches, enhancing maintenance accessibility.
- RoHS 3 and REACH compliance ensures environmental safety and regulatory adherence, supporting sustainable and responsible manufacturing practices.
Professional Applications & Engineering Value
This 1/4"-20 UNC left-hand hex nut is engineered to address critical challenges in industrial settings where standard right-hand threads may fail. The Grade 2 steel material provides robust resistance to wear and corrosion, making it ideal for machinery, automotive, and equipment assembly that experiences vibrational stress. Its coarse thread and Class 2B fit ensure reliable mating with corresponding bolts, reducing the risk of stripping and maintaining integrity under load. Commonly used in rotating components or specific safety mechanisms, this left-hand threaded nut prevents accidental disassembly, enhancing operational safety and longevity in demanding applications.
Specification Summary & Compliance
This hex nut features a 1/4"-20 UNC coarse thread with a Class 2B thread fit, ensuring precise dimensional accuracy per inch system standards. It adheres to common manufacturing specifications for external hex drive and standard profile nuts. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming its safety for industrial use without hazardous substances.
