S-90519A260 1"-14 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in applications where standard right-hand threads would loosen due to counter-rotational forces
• Grade 2 steel construction delivers reliable strength and durability for general industrial applications without unnecessary cost overhead
• Fine thread spacing (14 TPI) offers superior vibration resistance and precise adjustment capabilities compared to coarse threads
• Class 2B thread fit ensures smooth assembly and consistent performance while maintaining proper clearance for efficient installation
• External hex drive design allows for high torque application using standard wrenches, reducing installation time and tool requirements
• Full regulatory compliance with RoHS 3 and REACH standards ensures environmental safety and global market acceptance
• Standard hex profile provides compatibility with common tools and familiar installation procedures across maintenance teams

Professional Applications & Engineering Value

This left-hand thread hex nut addresses critical engineering challenges in applications where rotational forces would cause conventional right-hand threads to loosen. The Grade 2 steel construction provides optimal balance between strength and cost-efficiency for general industrial use, while the fine thread configuration (1"-14 UNS) delivers enhanced vibration resistance in machinery, equipment maintenance, and automotive applications. The Class 2B thread fit ensures reliable engagement without binding, reducing installation time and preventing cross-threading issues. Particularly valuable for rotating assemblies, conveyor systems, and machinery where reverse-direction threading is required, this external hex drive nut enables secure fastening using standard tools that maintenance teams already possess, minimizing downtime and specialized tool investments.

Specification Summary & Compliance

Manufactured to precise dimensional standards with Class 2B thread fit tolerance for consistent performance. Features UNS thread type with 1"-14 fine thread spacing in left-hand direction. Dimensions include 1-1/2" width across flats and 55/64" height. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring adherence to industrial safety standards and global market requirements. Manufactured from Grade 2 steel for reliable mechanical properties in general fastener applications.