MS20756F
TABLE II. Flange finish code. 1/
PIN code dash letter |
Material |
Plating finish |
Blank |
Steel |
Cadmium plating in accordance with SAE-AMS-C-81562, type II, class 3 or SAE-AMS-QQ-P-416, type II, class 2. |
Aluminum |
Anodize in accordance with MIL-A-8625, type II. 2/ |
|
CRES |
No additional finish. Passivation in accordance with SAE-AMS2700, type 6 or 7. |
|
Titanium 3/ |
Fluoride phosphated in accordance with SAE-AMS2486. |
|
-A |
Steel |
Aluminum-nickel in accordance with ASTM F1136, grade 3, NC |
-D |
Aluminum |
Anodize above with NAVAIR trivalent chromium pretreatment (TCP) in accordance with MIL-DTL-81706, type II, class 1A. 2/ |
-CN |
Steel |
Cadmium plating in accordance with SAE-AMS-C-81562, type II, class 3 or SAE-AMS-QQ-P-416, type II, class 2 with NAVAIR TCP in accordance with MIL-DTL-81706, type II, class 1A. |
-F |
Steel |
NAVAIR TCP in accordance with MIL-DTL-81706, type II, class 1A. 2/ |
-G |
Steel |
Zinc plating with colorless passivate in accordance with ASTM B633, type V, Fe/Zn 25. |
-H |
Steel |
Zinc phosphate finish in accordance MIL-DTL-16232 type Z, class1. 5/ |
-J |
Steel |
Zinc plating in accordance with ASTM B633; type II or III, Fe/Zn 5, or ASTM B695, type II, class 5. |
-N |
Steel |
NAVAIR TCP in accordance with MIL-DTL-81706, type II, class 1A. |
-R |
Steel |
Zinc plating in accordance with ASTM B633; type VI, Fe/Zn 5. |
-T |
Titanium 3/ 4/ |
Anodized in accordance with SAE-AMS2488, type 2 |
-V |
Steel |
Zinc-nickel in accordance with SAE-AMS2417, type 1. |
-Z |
Steel |
Zinc may be any zinc plating's from PIN codes H, J, R, V. |
-ZN |
Steel |
Zinc may be any zinc plating's from PIN codes H, J, R, V with NAVAIR TCP in accordance with MIL-DTL-81706, type II, class 1A. |
1/ Shall be capable of withstanding minimum of 96 hours salt spray.
2/ Die light blue.
3/ Titanium shall not be used in oxygen systems.
4/ Color equivalent to numbers /36076, /36081, /36099, /36118, /36134, /36152, /36170, /36173, and
/36176 in accordance with FED-STD-595.
5/ Hexavalent chromium free.
Trivalent wrenchability. When the finish has been damaged due to poor wrenchability, the surface of the connector shall be touched up using the brush plating process below. The term "trivalent wrenchability" is used to evaluate the ability of the finish to withstand abrasion from an excessive amount of wrenching
a. Brush plating of hard chromium by electrodeposition shall be in accordance with
SAE-AMS-2451/5.
b. Brush plating of medium-hardness, low stress nickel by electrodeposition shall be in accordance with SAE-AMS-2451/9.
c. Brush plating of NAVAIR TCP shall be in accordance with MIL-DTL-81706, type II, class 1A, material form 1 through 6, application method B. Example of a PIN: M817062A6B.
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