MS20761B
NOTES:
1. Dimensions are in inches.
2. Metric equivalents are given for information only.
3. Internal flow passage around bend shall be smooth and free from projections. Break all sharp edges and remove all hanging burrs and slivers which might become dislodged during use.
4. Diameters A, D, and E shall be concentric with each other within ±.010 inch (0.25 mm) FIM, and angles ±1/2°.
5. Unless otherwise specified surface roughness shall not exceed 100 µ-inches (2.54 µm) Ra in accordance with ASME B46.1. Angular tool marks up to 63 µ-inches Ra will be allowed.
6. Reduction by forging draft angle of 7° is permissible.
7. Dimensioning and tolerancing are in accordance with ASME Y14.5. Unless otherwise specified, tolerance decimals ± .005 and angles ± 0.30°.
FIGURE 1. Elbow, flanged 45° - Continued. REQUIREMENTS:
Dimensions and configuration: See figure 1. For nominal use on fuel and oil systems.
Sizes -40 and -48 are not to be used unless approved by the program office.
For tube sizes through 1 inch (25.4 mm): Maximum operating temperature 275°F (135°C), maximum pressure 1500 psi (10.3 MPa).
For tube sizes exceeding 1 inch (25.4 mm): Maximum operating temperature 275°F (135°C), maximum pressure 500 psi (3.4 MPa).
Materials shall be in accordance with SAE-AS4875 for forged parts. Material and size designators shall be in accordance with table I.
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