0.120" hole diameter 0.452" outside diameter 0.004" material thickness navy special project four slots in periphery, 90.0 deg apart, 0.020 in. w, 0.110 in. lg; sq flat surface, one side spring tension
Used on afterbody section,torpedo mk50. 1.145" hole diameter 1.835" outside diameter 0.024" material thickness passivate surface treated spring tension