MS21958D
REQUIREMENTS:
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. Aluminum alloy 7075-T73 in accordance with SAE AMS-QQ-A-225/9. Aluminum alloy forging,
7075-T73 in accordance with SAE AMS-QQ-A-367.
Finish. See aerospace standard 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 846.1.
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: MS21958W4L
MS21958 W 4L
8asic part identifier
Material code "W" replaces the dash (-) for al alloy 7075.
Size 4 low flow fitting
Changes from previous issue. Marginal notations are not used in the revision to identify changes with respect to the previous issue due to the extensiveness of the changes.
Referenced documents. In addition to SAE AS4875, this document references the following:
SAE AMS-QQ-A-225/9 |
SAE AS5202 |
ASME 846.1 |
SAE AMS-QQ-A-367 |
SAE AS8879 |
ASME Y14.5 |
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