A cylindrical device in which the inner or outer ring turns upon a single or double row of hardened balls which roll easily between the two rings, thus minimizing friction. For items with faces specially ground for duplex mounting see bearing,ball,duplex. Excludes:bearing,ball,airframe.
helm assy , wasp class lhd end item identification, 0.8657 inches minimum and 0.8665 inches maximum overall outside diameter, mil-s-7420 mil spec single material response overall material document and classification, 0.2756 inches nominal overall width, 0.3147 inches minimum and 0.3153 inches maximum bore diameter