S-93425A245 5/8"-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 corrosion resistance with zinc-plated steel construction, ensuring longevity in harsh industrial environments.
- Reliable reverse-thread performance with left-hand threading, preventing loosening in counter-clockwise rotating applications.
- Precise fine threading (18 TPI) for superior vibration resistance and secure fastening in high-stress assemblies.
- Class 2B thread fit guarantees consistent engagement and ease of installation with standard UNF bolts.
- Grade 2 strength certification provides dependable load-bearing capacity for medium-duty mechanical applications.
- Standard external hex drive allows for easy installation and removal with common wrenches, improving maintenance efficiency.
- Full environmental compliance with RoHS 3 and REACH standards, ensuring safe use in regulated industries.
Professional Applications & Engineering Value
This 5/8"-18 UNF left-hand thread hex nut is engineered to address critical challenges in reverse-thread assemblies where standard right-hand threads would loosen under counter-clockwise torque. The zinc-plated steel construction offers enhanced corrosion protection, making it ideal for outdoor equipment, automotive components, and machinery exposed to moisture. Its fine threading provides superior resistance to vibration-induced loosening, a common failure point in industrial settings. The Class 2B thread fit ensures consistent performance with mating bolts, reducing assembly time and improving reliability in production lines. These nuts are particularly valuable in applications such as rotating shafts, mixing equipment, and specialized machinery where left-hand threading is essential for safety and operational integrity.
Specification Summary & Compliance
This hex nut features a 5/8"-18 UNF left-hand thread with Class 2B thread fit for precise dimensional accuracy per inch system standards. Manufactured from zinc-plated steel with a Grade 2 strength rating, it meets industry specifications for medium-duty fastening. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to global safety and sustainability standards.
