https://www.superiorwasher.com/washers/8840/Low-Carbon-Steel-Washers.html
This video is about a material known for its reliability and cost-effectiveness in industrial applications — low carbon steel. The malleable properties of low carbon steel accounts for an easy and fast manufacturing process. Low carbon steel washers are a cost-effective option for structural steel and construction applications. Low carbon steel washers also deliver the strength and reliability demanded by such applications. Produced in various sizes, thicknesses and shapes, this type of washer is a highly in-demand fastening hardware.