NLGI (National Lubricating Grease Institute)

NLGI, or the National Lubricating Grease Institute, is an organization that standardizes the classification of greases based on their thickness or consistency. They use a number scale from 000 (very soft) to 6 (very hard) to help users select the appropriate grease for specific applications. This consistency ensures that grease performs reliably across different brands and environments, making maintenance safer and more predictable. NLGI grades help professionals quickly identify the right lubricant to ensure machinery functions smoothly and efficiently without breakdowns caused by improper lubrication.