Used on c-17a aircraft. 5.780" hole diameter 6.460" outside diameter 0.032" material thickness washer is not flat, cupped top passivate surface treated internal key
Used on c-17a aircraft. 5.130" hole diameter 5.555" outside diameter 0.050" material thickness measurement from end of internal key to center of washer -2.47 to +2.48 passivate surface treated key
Used on c-17a aircraft. 5.130" hole diameter 5.555" outside diameter 0.050" material thickness measurement from end of internal key to center of washer -2.480 to +2.490 passivate surface treated key