MIL-DTL-25866C
a. Small holes need not be anodized.
b. Aluminum alloys that do not anodize satisfactorily shall be coated with a chemical
film in accordance with MIL-DTL-5541.
c. Where the primary purpose of the treatment is to afford a suitable paint base, chemical
treatments in accordance with MIL-DTL-5541 may be used in lieu of anodizing.
d. Castings containing nonaluminum-alloy integral inserts may be treated with a
chemical film in accordance with MIL-DTL-5541.
e. When abrasion resistance is a factor, chemical films in accordance with
MIL-DTL-5541 shall not be used in lieu of anodizing.
3.18.2 Steel parts. Steel parts shall be cadmium plated, where practicable, in accordance
with SAE AMS-QQ-P-416, type II or III, and of a class that is adequate to achieve the degree of
protection required.
3.19 Operating instructions. Instruction plates containing operating instructions such as
ON, OFF, RESET, shall be permanently affixed to the light. The lettering shall be clearly
legible and permanently marked.
3.20 Wiring diagram. A circuit diagram with a legend describing the electrical
components of the light shall be permanently attached to the interior of the housing or other
surface where practicable. The diagram shall be legible and protected against destruction by any
of the tests specified in section 4. Proper method for inserting the batteries shall be indicated.
3.21 Identification of product. Equipment, assemblies, and parts shall be marked for
identification in accordance with MIL-STD-130, except that serial numbers are not required.
3.22 Workmanship. All details of workmanship and finish shall be in accordance with
the best practice for high quality emergency exit lights consistent with the requirements of this
specification. Particular attention shall be given to freedom from blemishes, defects, burrs, and
sharp edges; accuracy of dimensions, radii of fillets, and marking of parts and assemblies;
thoroughness of soldering, welding, brazing, painting, wiring, and riveting; alignment of parts
and tightness of assembly screws, and bolts.
3.22.1 Riveting. Riveting operations shall be carefully performed to insure that the
rivets are tight and satisfactorily headed.
3.22.2 Cleaning. The light shall be thoroughly cleaned. Excess solder, metal chips, and
other foreign material shall be removed during and after final assembly.
3.23 Recycled, recovered, or environmentally preferable materials. Recycled, recovered,
or environmentally preferable materials should be used to the maximum extent possible,
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