Used on lgm-30g minuteman. 0.195" hole diameter 0.220" major thickness 0.550" overall width washer, saddle matl spec HB0170-028 type a sh per HB0170-029 bevel
drawing; washer, drive (synchro) ; navy washer, key drive protective treatmemt; plating, black nickel. per military standard, MS17186a is inactive for new design