Description: numeric code identifying standardized items throughout the NATO supply system; Name: NSN
Description: 13-digit numeric code, identifying all the standardized material items of supply as they have been recognized by the United States Department of Defense; Name: National stock number
Description: Speed that characterizes a pump in terms of its speed, flow rate per impeller eye, i.e. total flow for single-flow impeller, half flow for double-flow impeller, at the best efficiency point and head per stage at maximum impeller diameter ; Name: Specific speed