A special single or multiple-row ball bearing, rigid or self-aligning, and constructed with a fairlead at one end.
0.5000 inches minimum and 0.5100 inches maximum groove diameter, 0.0520 inches minimum and 0.0550 inches maximum groove radius, 0.2970 inches nominal inner ring width, 0.1895 inches minimum and 0.1905 inches maximum bore diameter, 0.2340 inches nominal outer ring width