MS21946F
REQUIREMENTS:
This standard takes precedence over documents referenced herein. Dimensions. See figure 1, figure 2, figure 3, table I and table II.
Unless otherwise specified tolerances for decimals are ± .010, angles ± .5°. Dimensioning and tolerancing are in accordance with ASME Y14.5.
Material in accordance with table III.
TABLE III. Material
Code letter |
Type |
Stock |
Document |
D |
2014-T6 |
Forging |
SAE-AMS4133 or SAE-AMS-QQ-A-367 |
D |
2024-T6 |
Bar |
SAE-AMS-QQ-A-225/6 |
D |
2024-T851 |
Bar |
SAE-AMS-QQ-A-225/6 |
W |
7075-T73 |
Forging |
SAE AMS-QQ-A-225/9 |
W |
7075-T7351 |
Forging |
SAE-AMS4124 or SAE-AMS-QQ-A-367 |
Finish. See SAE AS4875. Aluminum alloy 7075 fittings shall be dyed brown.
Surfaces. All machined surfaces shall be finished to 250 µin Ra (.00635mm), unless otherwise specified. Surface finish shall be in accordance with ASME B46.1.
Fitting surface shall be free of all burrs and slivers.
Identification of product. The Part or Identifying Number (PIN) for the fitting consists of the MS number, the material code and size number.
Example of PIN: MS21946W4L
MS21946 W 4L
Basic part identifier
Material code see table lll
Size 4 low flow fitting
Changes from previous issue. The margins of this specification are marked with vertical lines to indicate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue.
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