AN924 Rev 13
REQUIREMENTS:
Dimensions and configuration shall be in accordance with figure 1.
Installation shall be in accordance with MS21344.
Materials shall be in accordance with SAE-AS4841, see table I for material and finish code.
Finishes shall be in accordance with SAE-AS4841, unless otherwise indicated in table I.
TABLE I. Material and finish identification codes.
Material and
Material
Plating finish
finish code
Blank
Cadmium plating in accordance with SAE-AS4841. 1/
Cadmium plating in accordance with SAE-AS4841 with NAVAIR
CN
trivalent chromium pretreatment (TCP) in accordance with
Steel
MIL-DTL-81706, type II, class 1A.
NAVAIR TCP in accordance with MIL-DTL-81706, type II, class
E
1A.
Zinc plate (finish J, P, or R) with NAVAIR TCP in accordance
F
Steel
with MIL-DTL-81706, type II, class 1A.
Zinc plating in accordance with ASTM B633; type VI, Fe/Zn 5.
G
Steel
2/
Aluminum-nickel in accordance with ASTM F1136/F1136M,
H
Steel
grade 3, NC.
J
CRES type 304
In accordance with SAE-AS4841
K
CRES, type 316
In accordance with SAE-AS4841
L
Steel
Zinc-nickel in accordance with SAE-AMS2417, type 2, grade B.
Nickel-copper alloy
M
No additional finish.
UNS N04400
High-chromium nickel
N
No additional finish.
alloy UNS N06690
Zinc phosphate finish in accordance MIL-DTL-16232 type Z,
P
Steel
class1.
R
CRES, type 321
In accordance with SAE-AS4841
S
CRES
In accordance with SAE-AS4841
T
Titanium 4/
Anodize in accordance with SAE-AMS2488 type 2.
Aluminum alloy 7075-
W
In accordance with SAE-AS4841
T73
Zinc plating in accordance with ASTM B633; type II or III, Fe/Zn
Z
Steel
5, or ASTM B695, type II, class 5. 3/
Zinc plating in accordance with ASTM B633; type II or III, Fe/Zn
ZN
Steel
5, or ASTM B695, type II, class 5 with NAVAIR TCP in
accordance with MIL-DTL-81706, type II, class 1A. 3/
1/
Embrittlement test need not be run.
2/
Hexavalent chromium free.
3/
Not for use in aircraft.
4/
Not for use in oxygen systems.
3
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