STANDARD CODE
It is coded with digits and letters containing the drawing number and 8 separate pieces of information.
ADDITIONS TO STANDARD CODE
In addition to the technical specifications contained in the standard codes, the required features are listed in the '' ADDITIONS TO STANDARD CODE''. These features are given below. In this section only needed features are written. See examples.
SPECIAL CASES
Additional features which are not fully defined with ''STANDARD CODE”and’ADDITIONS TO STANDARD CODE’are coded with special drawing number. This code is expressed with IN=Manufacturing number.
