S-90576A123 M18 DIN 985, ISO 10511 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through the durable nylon insert that maintains locking force under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial environments
• High-temperature performance with nylon insert rated up to 220°F (104°C) for demanding applications
• Exceptional strength reliability with Class 8 rating ensuring consistent performance under heavy loads
• Standardized compatibility meeting DIN 985 and ISO 10511 specifications for seamless integration
• Easy installation and removal with external hex drive design for standard tool compatibility
• Secure coarse thread engagement with M18 x 2.5 mm metric threading for rapid assembly

Professional Applications & Engineering Value

This M18 nylon insert locknut delivers critical vibration resistance in demanding industrial environments where loosening under dynamic loads poses significant safety risks. The zinc-plated steel construction provides essential corrosion protection while maintaining the Class 8 strength rating required for heavy machinery, automotive assemblies, and structural applications. The nylon insert locking mechanism creates consistent friction against the mating bolt, eliminating the need for additional locking devices and reducing assembly time. Engineered to DIN 985 and ISO 10511 standards, this metric locknut ensures precise thread engagement with its coarse 2.5 mm pitch, making it ideal for production lines where speed and reliability are paramount. The external hex design accommodates standard wrenches, streamlining maintenance procedures across manufacturing, transportation, and construction sectors.

Specification Summary & Compliance

This locknut features M18 x 2.5 mm coarse metric threading with Class 6H thread fit tolerance, ensuring precise engagement with mating components. Manufactured to DIN 985 and ISO 10511 specifications, the nut maintains dimensional accuracy across production batches. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, containing no substances of very high concern above threshold limits. With dimensions of 27 mm width and 18.5 mm height, this externally hex-driven locknut provides consistent performance in industrial fastening systems requiring reliable vibration resistance.