S-90519A247 3/4"-10 Hex Nuts

Key Features & Benefits at a Glance

• Left-hand thread design provides secure fastening in reverse-thread applications where standard right-hand threads would loosen
• Grade 2 steel construction offers excellent strength-to-weight ratio for demanding industrial environments
• UNC coarse threading enables quicker installation and reduced cross-threading risk compared to fine threads
• Class 2B thread fit ensures consistent, reliable engagement with mating components while maintaining assembly ease
• Standard external hex profile delivers maximum tool accessibility and torque transmission for secure installations
• Full regulatory compliance with RoHS 3 and REACH standards guarantees environmental safety and global market acceptance
• Heavy-duty dimensions (1-1/8" width, 41/64" height) provide substantial bearing surface for enhanced load distribution

Professional Applications & Engineering Value

This left-hand thread hex nut solves critical engineering challenges in applications where rotational forces would cause standard right-hand threads to loosen. The Grade 2 steel construction provides the ideal balance of strength and machinability for heavy machinery, conveyor systems, and rotating equipment. The UNC coarse thread pattern with Class 2B fit ensures reliable performance in high-vibration environments while accommodating minor misalignments during assembly. Particularly valuable for safety-critical reverse-thread applications in industrial machinery, this external hex drive nut offers superior torque capability and tool access in confined spaces. The combination of left-hand threading and robust steel material makes this fastener essential for preventing accidental disassembly in counter-rotating systems.

Specification Summary & Compliance

This 3/4"-10 UNC hex nut features Class 2B thread fit per ASME B1.1 standards, ensuring precise dimensional accuracy and reliable mating performance. Manufactured from Grade 2 steel with standard external hex drive configuration, the nut measures 1-1/8" across flats and 41/64" in height. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety standards for industrial components.