S-90047A029 1/4"-20 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread technology, preventing loosening in high-stress applications
• Excellent corrosion resistance with 18-8 stainless steel construction, ensuring long-term reliability in harsh environments
• Precise thread engagement with Class 2B thread fit for consistent performance and reduced assembly issues
• Easy installation and removal using standard 7/16" external hex drive compatible with common tools
• Reliable right-hand coarse threading with UNC 1/4"-20 specification for quick assembly in industrial settings
• Compliance with environmental regulations including RoHS 3 and REACH, meeting global manufacturing standards
• Durable standard hex profile providing secure wrenching and consistent torque application

Professional Applications & Engineering Value

This 18-8 stainless steel locknut with center lock distorted thread technology addresses critical vibration-induced loosening challenges in industrial machinery, automotive assemblies, and structural applications. The UNC coarse thread design ensures rapid installation while maintaining secure fastening under dynamic loads. Manufactured from corrosion-resistant 18-8 stainless steel, this external hex locknut provides exceptional durability in demanding environments where moisture, chemicals, or temperature variations would compromise ordinary fasteners. The distorted thread locking mechanism creates consistent friction along the mating bolt threads, eliminating the need for secondary locking devices and reducing assembly time while providing reliable vibration resistance throughout the product lifecycle.

Specification Summary & Compliance

This heavy-duty locknut features 1/4"-20 UNC coarse threads with Class 2B thread fit for precise dimensional accuracy and reliable engagement. The external hex drive measures 7/16" across flats with a 7/32" height profile. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and workplace safety standards. The right-hand thread direction and center lock distorted thread design provide consistent locking performance across industrial applications.