MIL-STD-193 Painting, Procedures And Marking For Vehicles, Construction Equipment, Material Handling Equipment, And Spare PartsThis standard establishes minimum requirements for materials to be used and procedures to be followed in surface preparation, surface treatment, plating and painting of vehicles, construction and material handling equipment, and markings so as to provide protection from the adverse effect of chemical and environmental conditions.

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Components or requirements

Finish processes

Springs.

Finish as specified by procuring activity:

1.    Clean per applicable method of TT-C-490 and enamel per TT-E-496.

2.    Mechanically deposit zinc per type II of MIL-C-

81562 (preferred), or cadmium, or electroplate per type II of QQ-P-416 or ASTM B633 type II.

When electroplated, bake within one hour after plating.

3.    No finish required for springs operating in grease or oil.

4.    Paint leaf springs as specified in table II or apply corrosion preventive compound, grade 4 of MIL- C-16173, color green 383.

5.    Closely coiled springs, where plating or painting

of internal surfaces is not feasible, shall be coated with corrosion preventive compound per class 2

of MIL-C-11796 or grade 2 of MIL-C-16173.

Weld through primer.

Contact areas of ferrous sheet metal (0.125 inch thick and under) shall be primed as follows before welding:

1.    Clean per applicable method of TT-C-490.

2.    Prime each contact surface per MIL-P-46105 or MIL-S-53018 or coating source and application approved by TACOM