MIL-STD-1247 Markings, Functions And Hazards Designations Of Hose, Pipe, And Tube Lines For Aircraft Missile, And Space SystemsThis standard establishes material labeling requirements for identification, function, subfunction, pressures, hazards and direction of flow for pipes, hoses and tube lines used in aircraft, missile, space systems, and support equipment. The use of colors, words and symbols to identify the functions of such items to include approved abbreviations, and the dimensions of labeling items such as tags, tapes, and bands, are specifically prescribed see 4.1.1.

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MIL-STD-1247D

NOTES:

1. Letters shall be printed in black, 3/32 inch high with 1/32 inch between lines of a legend and

¼ inch between a legend and its repetition.

2. Arrow shall be black, head 3/32 inch high, and shaft 1/32 inch wide.

3. Arrow to have head on both ends for reversible flow.

4. Colors shall conform to Paragraph 5.1.1 and Symbols as shown in Table I.

5. Tape shall be a minimum of 1 inch wide

FIGURE 4. Optional arrangement for identification.