S-90040A147 3/4"-10 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread design that maintains secure fastening in high-stress environments
• Enhanced corrosion protection with zinc plating that extends service life in industrial applications
• Reliable performance with Grade 2 strength classification suitable for medium-duty mechanical assemblies
• Easy installation and removal with standard external hex drive compatible with common wrench tools
• Precise thread engagement with Class 2B fit ensuring consistent performance across mating components
• Environmental compliance meeting both REACH and RoHS 3 standards for safe industrial use
• Optimized for coarse thread applications with 3/4"-10 UNC configuration providing excellent holding power

Professional Applications & Engineering Value

This zinc-plated steel locknut delivers exceptional engineering value through its innovative center lock distorted thread design, specifically engineered to combat vibration-induced loosening in demanding industrial environments. The 3/4"-10 UNC coarse thread configuration provides superior holding power while maintaining installation efficiency in heavy machinery, construction equipment, and automotive assemblies. The external hex drive ensures compatibility with standard tools, streamlining maintenance procedures. Manufactured from Grade 2 steel with protective zinc plating, this locknut offers reliable performance in applications where vibration resistance and corrosion protection are critical to operational safety and equipment longevity.

Specification Summary & Compliance

This locknut features precision 3/4"-10 UNC coarse threads with Class 2B thread fit for consistent mating performance. The distorted thread locking mechanism provides secure fastening without additional components. Dimensions include 1-1/8" width and 41/64" height for standard tool compatibility. The product fully complies with REACH (EC 1907/2006) and RoHS 3 (2015/863/EU) environmental standards, ensuring safe usage across industrial applications while meeting Grade 2 strength classification requirements.