S-90519A215 3/8"-24 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in applications requiring reverse rotation resistance, preventing unintentional loosening under counter-clockwise torque.
• Grade 2 steel construction offers reliable tensile strength and durability for general industrial use, balancing performance with cost-effectiveness.
• Class 2B thread fit ensures consistent engagement with mating components, reducing cross-threading risks and enabling smoother assembly in high-volume production.
• Fine UNF threading (24 TPI) delivers enhanced vibration resistance and improved load distribution compared to coarse threads, ideal for precision equipment.
• Standard external hex drive allows for high-torque application using common wrenches, simplifying maintenance and reducing installation time.
• RoHS 3 and REACH compliance guarantees environmental safety and material traceability, meeting stringent international regulatory standards for industrial components.
• Precision inch dimensions (9/16" width, 21/64" height) ensure interchangeability with existing UNF-standard assemblies, minimizing retrofit challenges.

Professional Applications & Engineering Value

This left-hand thread hex nut addresses critical engineering needs in machinery where standard right-hand threads would loosen under specific rotational forces. Manufactured from Grade 2 steel, it provides sufficient strength for non-critical structural applications while resisting environmental degradation. The fine UNF threading and Class 2B fit work synergistically to maintain clamp load in high-vibration environments like rotating shafts, conveyor systems, and automotive components. Its external hex drive facilitates quick servicing with standard tools, reducing downtime in maintenance-intensive operations. By combining reverse-thread security with regulatory-compliant steel construction, this nut delivers reliable performance in assembly lines, repair workshops, and OEM equipment where directional torque management is paramount.

Specification Summary & Compliance

This hex nut adheres to UNF fine thread standards with a 3/8"-24 specification and Class 2B thread fit for consistent dimensional accuracy. Manufacturing follows inch system conventions with a 9/16" width and 21/64" height. The product fully complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring hazardous substance restrictions are met. Grade 2 strength classification confirms mechanical properties align with industrial fastener requirements for moderate stress applications.