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.

Pages 1 - 2 - 3 - 4 - 5 - 6 - 7 - 8 - 9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18 - 19 - 20 - 21 - 22 - 23

MIL-STD-1247D

FIGURE 5. Examples of electrical identification.

NUT MS21045C3

CLAMP MS21919

SCREW MS519 58-10

FUNCTION

SUBSIDIARY FUNCTION HAZARD

PRESSURE

MATERIAL:

See notes 7 & 8

CRES SHEET

.025 THICK MIL-S-5059

COND ANL COMP 302

NOTES:

FIGURE 6. Tag identification.

1. Tag sizes shall be compatible with the diameter of the tubing.

2. Size of letters for wording on tag shall be compatible with tag.

3. Arrow size shall be compatible with letters.

4. Arrow shall have head on both ends for reversible flow.

5. If temperature exceeds 500° F (260° C) or if tags are used on Liquid Oxygen (LOX) lines, remove cushion from clamp and use plain clamp.

6. More than one clamp may be used if required for rigidity.

7. For aerospace and unspecified applications use SAE Aerospace Materials Specification (AMS), AMS QQ-A-

250, Aluminum and Aluminum Alloy Plate and Sheet; General Specification and associated Detail

Specifications.

8. For non-aerospace applications use American Society for Testing and Materials (ASTM) Specifications, ASTM B209, Aluminum and Aluminum-Alloy Sheet and Plate.