Steel Back-Up Washer 3/16-Inch Rivet Support

Steel back-up washer sized for 3/16-inch rivet holes, with approximately ½-inch outside diameter, designed to distribute load and prevent pull-through in soft or thin materials or where holes are slightly oversized. The steel construction and plain finish make it durable for high-stress or vibration-prone assemblies, ideal for structural or industrial rivet joints needing extra bearing surface.