"The item consists of corrosion-resistant steel, 0.505 inches in diameter and 0.17 inches thick with a hole in the center tapped for a 10-56UNS-2B screw and featuring a press fitting facility at the end of the hole. Additionally, it includes one hole for a straight pin, 0.625 ± 0.00025 inches in diameter, located 0.180 inches from the tapped hole's center. The item also features a notch, 0.065 inches wide, running from the outside circumference to 0.14 inches from the tapped hole's center and extending across one parallel bearing surface to the other. This notch is positioned on a 180-degree axis with the previously mentioned holes."