S-90507A235 1/4"-28 Cap Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread locking technology, preventing loosening in high-stress environments
• Excellent corrosion protection with 18-8 stainless steel construction, ideal for harsh industrial and automotive applications
• Precise thread engagement with Class 2B thread fit ensuring reliable, consistent fastening performance
• Enhanced installation efficiency featuring external hex drive for easy tool access and secure torque application
• Fine thread optimization with 1/4"-28 UNF threading providing superior load distribution and clamping force
• Complete environmental compliance meeting RoHS 3 and REACH standards for global manufacturing requirements
• Dual-function design combining cap nut aesthetics with locking nut performance in a single component

Professional Applications & Engineering Value

This 18-8 stainless steel cap locknut delivers critical engineering solutions where vibration-induced failure is a primary concern. The distorted thread locking technology creates permanent friction along the thread engagement, eliminating the need for secondary locking devices while maintaining UNF fine thread precision. The corrosion-resistant properties of 18-8 stainless steel ensure long-term reliability in demanding environments including industrial machinery, automotive assemblies, and marine applications. The combination of external hex drive and standard cap nut profile provides both installation convenience and finished appearance, making it ideal for applications where both performance and aesthetics matter. The fine thread configuration offers superior resistance to vibrational loosening compared to coarse thread alternatives.

Specification Summary & Compliance

This cap locknut features 1/4"-28 UNF fine threading with Class 2B thread fit for precision engagement, manufactured to standard inch system dimensions (7/16" width, 15/32" height). The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications. The right-hand thread direction and standard cap nut profile adhere to industry-accepted fastener specifications for compatibility with existing assembly systems.