S-90047A135 1/2"-13 Locknuts

Key Features & Benefits at a Glance

• Superior vibration resistance through center lock distorted thread technology that maintains clamp force under dynamic loads
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise thread engagement with Class 2B thread fit ensuring consistent performance and easy installation
• Industry-standard compatibility with UNC coarse 1/2"-13 threads for broad application across industrial equipment
• Secure locking mechanism that eliminates the need for additional locking devices, reducing assembly time and costs
• External hex drive design for standard tool compatibility and reliable torque application during installation
• Environmental compliance meeting RoHS 3 and REACH standards for safe use in regulated industries

Professional Applications & Engineering Value

This 18-8 stainless steel locknut with center lock distorted thread technology addresses critical vibration-induced loosening challenges in industrial applications. The unique distorted thread design creates controlled interference along the thread path, generating consistent locking force without compromising the UNC coarse thread integrity. Manufactured from corrosion-resistant 18-8 stainless steel, this external hex locknut maintains its locking performance in demanding environments including chemical processing, marine applications, and heavy machinery. The Class 2B thread fit ensures smooth installation while providing reliable vibration resistance, making it ideal for equipment subject to constant motion, thermal cycling, or mechanical stress where fastener security is paramount.

Specification Summary & Compliance

This high-performance locknut features precise 1/2"-13 UNC coarse threads with Class 2B thread fit for optimal engagement and consistent performance. The center lock distorted thread design provides reliable vibration resistance without additional locking components. Manufacturing complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, ensuring safe use across regulated industries. With standard external hex drive configuration and dimensions of 3/4" width and 7/16" height, this locknut delivers reliable performance in right-hand thread applications requiring secure fastening under dynamic conditions.