MIL-DTL-14072F
TABLE V. Electrical conductivity of passivated finishes (see para 3.12).
Alloy Part
Type
Finish
Finish
Remarks
Conducting
Exposure
Number
Frequency
Power RF
Ferrous
I
M225
Chromate-
No
Yes
Electrical contact
II
M262
passivated
may require use of
Cadmium
toothed type
lockwashers. 1/
Ferrous
I
M227
Chromate-
No
Yes
Electrical contact
II
M264
passivated
may require use of
Zinc
toothed type
lockwashers. 1/
Ferrous
II
E211
Phosphate
No
No
Since these
II
E212
passivation
finishes are
II
E213
porous, their use in
contact with other
metals must be
restricted to those
forming couples
compatible with
ferrous alloys
(except corrosion-
resistant steel).
Aluminum
II
E511
Anodize
No
No
May be used in
contact with any
dissimilar metal.
Aluminum
II
E512
Chemical
Yes
Yes
Electrical contact
does not require
use of toothed
lockwashers.
Aluminum
II
E513
Chemical
No
Yes
Electrical contact
film
may require use of
toothed type
lockwashers. 2/
Aluminum
II
E514
Hard
No
No
May be used in
anodize
contact with any
dissimilar metal.
Zinc-base
II
E611
Chromate
No
Yes
Electrical contact
passivation
may require use of
toothed type
lockwashers. 1/
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