S-90739A110 3/8"-24 Hex Nuts

Key Features & Benefits at a Glance

• Exceptional strength for demanding applications with Grade 5 classification, ensuring reliable performance under high stress and vibration.
• Superior corrosion resistance provided by zinc yellow-chromate plating, extending service life in harsh industrial environments.
• Precise left-hand thread engagement with 3/8"-24 UNF fine threads and Class 2B fit, preventing loosening in reverse-thread assemblies.
• Easy installation and removal thanks to the standard external hex profile and 9/16" width, compatible with common wrenches.
• Optimized for fine-thread applications where vibration resistance and precise adjustment are critical, reducing maintenance needs.
• Durable steel construction combined with protective plating, offering long-term reliability in heavy-duty mechanical systems.
• Standardized inch system dimensions ensuring interchangeability and easy sourcing for replacement or assembly lines.

Professional Applications & Engineering Value

This Grade 5 left hand thread hex nut is engineered to address critical challenges in industrial settings where reverse-thread mechanisms are essential, such as rotating equipment, conveyor systems, and machinery with left-hand threaded shafts. The zinc yellow-chromate plated steel construction provides robust corrosion resistance, minimizing downtime in humid or corrosive environments. With 3/8"-24 UNF fine threads and Class 2B thread fit, it ensures tight, secure fastening that resists vibration-induced loosening, enhancing safety and operational efficiency. The standard external hex drive allows for quick installation with standard tools, reducing assembly time and labor costs. Ideal for automotive, aerospace, and heavy machinery applications, this nut delivers consistent performance where reliability and durability are paramount.

Specification Summary & Compliance

This hex nut features precise Class 2B thread fit per UNF standards, ensuring accurate engagement and interchangeability. Dimensions include thread size of 3/8"-24 UNF, width of 9/16", and height of 21/64", manufactured to inch system specifications. It complies with industry standards for Grade 5 strength and is suitable for applications requiring left-hand threading. The zinc yellow-chromate plating meets common corrosion protection requirements, and the nut is produced in accordance with relevant ASME and RoHS guidelines for quality and environmental safety.