Install New Sink Drain

What happens here

From the top of the sink, insert the new drain flange into the sink opening. From underneath the sink, first place the rubber washer onto the threaded portion of the drain flange, ensuring it sits flush against the sink bottom. Next, slide the paper friction ring over the threads. Finally, thread the large locknut onto the drain assembly. Hand-tighten the locknut as much as possible. Then, use adjustable pliers or channel locks to firmly tighten the locknut, ensuring the drain is securely sealed to the sink. It's helpful to have an assistant hold the drain flange from the top to prevent it from spinning while tightening.

Goal: Secure the new drain flange to the sink basin