MIL-STD-186F.022897.PDF

INCH-POUND

MIL-STD-186F (MI)

20 February 2002

SUPERSEDING

MIL-STD-186E (MI)

30 September 1991

DEPARTMENT OF DEFENSE STANDARD

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1. This military standard is approved for use by the U.S. Army Aviation and Missile

Command, Department of the Army, and is available for use by all Departments and

Improvement Proposal (DD Form 1426) appearing at the end of this document or by

letter.

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PARAGRAPH PAGE

1. SCOPE 1

1.1 Scope 1

1.2 Selection of finishing system 1

2.3 Non-Government publications 6

2.4 Order of precedence 16

3. DEFINITIONS 17

3.1 Definitions 17

3.2 Exterior surfaces 17

3.3 Hermetically sealed 17

3.4 Supplier 17

3.5 Nonreparable 17

3.6 Similar and dissimilar metals 17

4. GENERAL REQUIREMENTS 18

4.7 Organic soil removal 19

4.7.1 Recommended Cleaning Materials 19

4.8 Painting 19

4.9 Plating 19

4.10 Metal coupling compatibility 19

4.10.1 Reduction of corrosion at faying surfaces 19

4.11 Weapon system prohibitions 19

4.12 Magnesium alloys 21

4.13 Tubing 21

4.13.1 Plumbing lines 21

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PARAGRAPH PAGE

4.15 Star washers 22

4.16 Cadmium plating 22

4.17 Cables, chains, close-wound springs 22

4.24 Standard parts - Government standard parts (bolts,

nuts, screws, washers, etc.) 23

4.25 Application to previously painted surfaces 23

4.25.1 Surface preparation 23

4.25.2 Finishing procedures 24

4.25.2.1 Epoxy primer 24

4.25.2.2 Application methods 24

4.25.2.3 Film thickness 24

4.25.3 Safety 24

5. DETAILED REQUIREMENTS 25

5.1.3 High-hardness steels 25

5.1.4 Low-hardness steels 25

5.1.5 Magnesium and its alloys 26

5.1.6 Titanium and its alloys 26

5.1.7 Copper, brass, cadmium, tin 26

5.1.8 Wood 26

5.2 Surface treatments 26

5.2.1 Aluminum and aluminum alloys 26

5.2.1.1 Electrically conductive surfaces 26

5.2.1.2 Surface treatment of assemblies 26

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PARAGRAPH PAGE

5.2.4 Corrosion and heat resistant alloys 27

5.2.5 Cadmium 27

5.3.3 Chromium plating 29

5.3.4 Black chromium plating 29

5.3.5 Porous chromium plate 29

5.3.6 Nickel plating 29

5.3.7 Black nickel plating 29

5.3.8 Electroless nickel coating 30

5.3.9 Tin, and/or alloy plating (coating) 30

5.3.9.1 Tin plating (coating) 30

5.3.9.2 Hot-dip, tin, tin alloy coatings 30

5.3.10 Tin-cadmium plating 30

5.4 Nonmetallic coatings 31

5.4.1 Phosphate treatments 31

5.4.2 Black oxide treatment 31

5.4.3 Hard anodic coatings for aluminum and its alloys 31

5.4.4 Metallo-ceramic and ceramic coatings 31

5.5 Organic coatings 31

5.5.1 General priming and painting of surfaces 31

5.5.2 Equipment and facilities 31

5.5.2.1 General 32

5.5.2.2 Spray equipment 32

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