MIL-STD-186 Protective Finishing For Army Missile Weapon SystemsThis standard establishes the minimum requirements for procedures, materials, and systems for cleaning, plating, painting and finishing metals, wood, electronic materials, parts and assemblies for rockets, guided missiles, and components to protect them from deterioration.

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Code

No.

Coating

Type

Other Treatment

Thickness, minimum (inch)

*301

*302

*303

304

305

306

307

308

309

310

311

Cadmium plate

(QQ-P-416) Same

Same

Cadmium plate

(QQ-P-416) Same

Same

Cadmium plate

(QQ-P-416) Same

Same

Cadmium plate, vacuum deposited (SAE AMS-C-

8837)

Same

Type I, Class 1

Type I, Class 2

Type I, Class 3

Type II, Class 1

Type II, Class 2

Type II, Class 3

Type III, Class 1

Type III, Class 2

Type III, Class 3

Type I, Class 1

Type I, Class 2

No supplementary treatment.

No supplementary treatment. No supplementary treatment. Chromate supplementary

treatment.

Chromate supplementary treatment.

Chromate supplementary treatment.

Phosphate supplementary treatment.

Phosphate supplementary treatment.

Phosphate supplementary treatment.

No supplementary treatment.

No supplementary treatment.

0.005

0.0003

0.0002

0.0005

0.0003

0.0002

0.0005

0.0003

0.0002

0.0005

0.0003