S-98892A132 5/16"-18 Flange Nuts

Key Features & Benefits at a Glance

• Superior vibration resistance through distorted thread top lock technology that maintains secure fastening under dynamic loads
• Enhanced anti-loosening protection with serrated flange surface that bites into mating surfaces, eliminating the need for separate washers
• Excellent corrosion resistance provided by 18-8 stainless steel construction for long-term reliability in harsh environments
• Reliable coarse thread engagement with UNC 5/16"-18 Class 2B threads ensuring consistent performance and easy installation
• Integrated flange design with 0.68" diameter distributes clamping force over wider area, reducing surface damage
• Industry-standard compatibility with external hex drive for familiar installation using common tools
• Environmental compliance assurance meeting both REACH and RoHS 3 standards for responsible manufacturing

Professional Applications & Engineering Value

This 18-8 stainless steel flange lock nut combines distorted thread technology with a serrated flange surface to address critical vibration-induced loosening challenges in industrial applications. The top lock distortion creates consistent interference along the UNC coarse threads, providing permanent locking action without compromising thread integrity. Meanwhile, the serrated flange eliminates rotation by embedding into joint surfaces, making it ideal for heavy-duty equipment, automotive assemblies, and machinery subjected to continuous vibration. The Class 2B thread fit ensures smooth installation while maintaining precise tolerances, and the external hex drive accommodates standard wrenching tools for efficient assembly in confined spaces.

Specification Summary & Compliance

This flange lock nut features 5/16"-18 UNC coarse threads with Class 2B thread fit for consistent engagement and reliable performance. The nut meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) standards for chemical safety. Manufacturing specifications include right-hand thread direction, 0.68" flange diameter, and 9/32" height for standardized installation across industrial applications requiring vibration-resistant fastening solutions.