S-90507A250 3/8"-16 Cap Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology that maintains secure fastening under dynamic loads
• Excellent corrosion protection with 18-8 stainless steel construction for extended service life in harsh environments
• Reliable thread engagement with Class 2B thread fit ensuring consistent performance and easy assembly
• Enhanced installation efficiency featuring external hex drive design for standard tool compatibility and torque application
• Optimized mechanical strength from UNC coarse thread profile providing robust holding power in industrial applications
• Full regulatory compliance meeting RoHS 3 and REACH standards for safe use across global markets
• Secure end protection with cap nut design that covers thread ends while providing locking functionality

Professional Applications & Engineering Value

This 18-8 stainless steel cap locknut combines distorted thread technology with UNC coarse threading to solve critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural frameworks. The corrosion-resistant material maintains integrity in moist or chemical-exposed environments, while the external hex drive enables efficient installation with standard tools. The Class 2B thread fit ensures consistent engagement without galling, making it ideal for applications requiring repeated maintenance. The cap nut profile provides both thread protection and aesthetic finishing, serving dual purposes in equipment where exposed threads pose safety or contamination risks.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 3/8"-16 UNC coarse threads and Class 2B thread fit for reliable compatibility with mating components. The nut features 9/16" width across flats and 5/8" height for optimal strength-to-size ratio. Compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted use in industrial markets. The right-hand thread direction and standard cap nut profile adhere to industry conventions for seamless integration into existing assemblies.