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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MIL-STD-186F (MI)

5.6.7  Sampling frequency.  Sampling for the inspection tests of Section 5 shall be accomplished:

(a) When a new supplier furnishes materials used in the product process

(b) When evidence occurs of deterioration in the quality of the finish

(c) When a change of process or sequence is affected

(d) Not less than one inspection a week for those weeks when painting facilities are used.

The quality control tests of 5.6.2, 5.6.3, 5.6.4 and 5.6.5 of this standard shall be conducted not less than once a week in the production painting of parts.  The results of the inspection tests shall be reviewed by the Government inspector for conformance with established quality criteria.

5.6.8  Laundering of shop cloths.  When laundered shop cloths are used, inspectors shall conduct regular and frequent inspection tests at the laundry, or after return of the laundered cloths, or both, and spot-tests of the cloths just prior to actual usage in the shop, in sufficient numbers to ensure compliance with the provisions of

5.5.4.13.2 herein.

5.6.9  Inspection and acceptance of CARC painting.  The following are inspections that must take place before acceptance can be made on the end item, provided the pretreatment and primer meet the adhesion requirement (see 5.6.4):

(a)  The acceptance of the color of the paints shall not be based upon a color match to a standard color chip.  Total acceptance of this paint shall be based only upon whether the individual lot of subject paint was approved by the Army Research Laboratory, Weapons and Materials Research Directorate, ATTN:  AMSRL-WM, Aberdeen Proving Grounds, MD  21005.

(b)  Cleaning and treatment requirements shall comply with this standard.

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(c)  The CARC paint shall be applied to a dry film thickness of 1.8 to 2.4

(d)  Proper solvent selections and application techniques shall be adhered to.

(e)  The dry color shall be uniform for each individual part, but not necessarily from part to part.

(f)  There shall be no running of the paint.

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