MIL-DTL-28840/13F
REQUIREMENTS:
Dimensions and configurations: See figure 1.
Interface dimensions shall conform to MIL-DTL-28840.
Chain shall be free to rotate on rivet. Chain material shall be 300 series corrosion resistant steel,
passivated in accordance with SAE-AMS2700, type 2.
Gasket shall be mechanically or chemically captive to the cover. Gasket material shall be
fluorosilicone.
Material and finish, protective covers: See table I.
TABLE I. Material and finish.
Material
Finish
Material and finish
designator
Aluminum alloy in accordance with
Cadmium plate, olive drab over
ASTM B85/B85M, ASTM B26/B26M,
electroless nickel
W
ASTM B108/B108M, ASTM B209,
ASTM B211 or ASTM B221
Corrosion resistant steel in accordance with
Cadmium plate, black
ASTM A276, ASTM A473, or
D
ASTM A580/A580M, type 316
Pure electro-
F
deposited aluminum,
Aluminum alloy in accordance with
non-reflective
ASTM B85/B85M, ASTM B26/B26M,
Nickel fluorocarbon polymer,
ASTM B108/B108M, ASTM B209,
L
non-reflective
ASTM B211 or ASTM B221
S
Zinc nickel, non-reflective
Nickel fluorocarbon polymer,
Corrosion resistant steel in accordance with
N
non-reflective
ASTM A276, ASTM A473, or
ASTM A580/A580M, type 316
R
Zinc nickel, non-reflective
3
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