S-90715A210 1 1/8"-7 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through nylon insert locking mechanism that maintains secure fastening even under continuous motion
• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh environments including chemical and marine applications
• High-temperature performance with nylon insert rated up to 220°F, ensuring reliable locking in elevated temperature conditions
• Precise thread engagement with Class 2B thread fit providing consistent, reliable fastening without cross-threading issues
• Easy installation and removal with standard external hex drive design compatible with common wrench tools
• Coarse UNC threading enables quick assembly and disassembly while maintaining strong holding power
• Regulatory compliance assurance meeting RoHS 3 and REACH standards for environmental and safety requirements

Professional Applications & Engineering Value

This 1 1/8"-7 UNC nylon insert locknut delivers critical engineering solutions where vibration-induced loosening poses significant safety and performance risks. The 316 stainless steel construction provides superior corrosion resistance compared to standard grades, making it ideal for chemical processing equipment, marine hardware, and food processing machinery where moisture and corrosive elements are present. The nylon insert locking mechanism creates consistent friction against mating threads, eliminating the need for secondary locking devices and reducing assembly time. With its coarse thread pattern and external hex drive, this locknut ensures rapid installation in high-volume production environments while maintaining reliable performance in heavy machinery, structural frameworks, and transportation equipment subject to constant vibration and thermal cycling up to 220°F.

Specification Summary & Compliance

This heavy-duty locknut features precise Class 2B thread fit according to UNC standards, ensuring proper engagement with mating components. The manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming environmental and safety compliance. With dimensions of 1 5/8" width and 1 11/64" height, this locknut maintains dimensional accuracy for consistent performance across industrial applications. The coarse 7-threads-per-inch spacing follows standard UNC specifications for reliable interchangeability and compatibility with corresponding fasteners.