MIL-DTL-6508C
3.7 Finish. Protective coatings and finishes which will crack, chip or scale during
normal service life or due to extremes of atmospheric conditions shall not be used.
3.7.1 Aluminum alloy parts. Where practicable, aluminum alloy parts shall be covered
with an anodic film conforming to MIL-A-8625. If the dial consists of aluminum alloy, then
small holes and case inserts need not be anodized. Aluminum alloys that do not anodize
satisfactorily shall be coated with chemical film in accordance with MIL-DTL-5541.
3.7.2 Case front. The front of the thermometer case shall be finished in a durable
lusterless black.
3.7.3 Stem. The thermometer stem shall have a bright natural metal finish.
3.7.4 Sunshield. The outer surface of the sunshield shall be a highly polished metal
finish.
3.8 Weight. The weight of the complete instrument shall not exceed 0.18 pound.
3.9 Performance. The thermometer shall perform satisfactorily when subjected to the
tests specified in Section 4.
3.10 Workmanship. The thermometer, including all parts and accessories, shall be
constructed and finished to produce an instrument free from all defects that would affect proper
functioning in service. Particular attention shall be given to freedom from blemishes, defects,
burrs, sharp edges, accuracy of dimensions, and marking of parts and assemblies.
3.11 Identification of product. A nameplate or self-adhesive metallic label shall be
securely attached to the exterior of the case and shall be legibly and durably marked in
accordance with MIL-STD-130.
3.11.1 Manufacture's part number. The manufacture's part number marked in the space
provided on the nameplate shall be identical with the manufacturer's engineering production
drawing number, including applicable dash numbers, if the drawing is tabulated and covers more
than one part.
3.11.2 Interchangeability. All parts having the same manufacturer's part number shall be
functionally and dimensionally interchangeable. The drawing number requirements of
ASME Y14.100, numbering, coding, and identification section, shall govern changes in the
manufacturer's part numbers.
3.12 Installation instruction. The contractor shall furnish with each thermometer one
copy of the installation instructions with illustrations and diagrams. Prior to printing, two copies
shall be furnished to the procuring activity for approval. The instructions shall be printed on
8.5 by 11 or 11 by 17-inch paper.
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