AN6270 REV 9
TABLE II. Material finish identification codes.
Plating
finish
Material
Plating Finish
designator
Blank
Cadmium
Cadmium plating with NAVAIR trivalent chromium
CN
Steel 4130 or 4140
pretreatment (TCP)
E
NAVAIR TCP
F
Steel 4130 or 4140
Zinc plate (finish J, P, or R) with NAVAIR TCP
Blank
Aluminum
Anodized
H
Steel 4130 or 4140
Aluminum-nickel
J
Steel 4130 or 4140
Zinc-nickel
P
Steel 4130 or 4140
Zinc phosphate
R
Steel 4130 or 4140
Zinc plating in accordance with ASTM B633; type VI, Fe/Zn 5
Blank
CRES
No additional finish, passivated
Blank
Titanium
Anodize
Zinc plating in accordance with ASTM B633;
Z 1/
Steel 4130 or 4140
type II or III, Fe/Zn 5, or ASTM B695, type II, class 5
Zinc plating in accordance with ASTM B633;
ZN 1/
Steel 4130 or 4140
type II or III, Fe/Zn 5, or ASTM B695, type II,
class 5 with NAVAIR TCP
1/ Not for use on aircraft.
Adapter color coding reference MIL-DTL-38726.
TABLE III. Fractional length table. 1/
Length
Fractional length
designator
Fraction
Decimal mm
0
0
.000
0.00
1
1/8
.125
3.18
2
1/4
.250
6.35
3
3/8
.375
9.53
4
1/2
.500
12.70
5
5/8
.625
15.88
6
3/4
.750
19.05
7
7/8
.875
22.23
1/ Fractional lengths are available only in .125 inch
(3.18 mm) increments.
3
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