MIL-HDBK-1897(AT)
5.1.11.6 Curved holes. Size of opening and radius of curved passages take a different set of tolerances. Figure 9 covers the tolerances for the radius of a curve. See table II for tolerances applicable to openings.
FIGURE 9. Tolerances for investment castings with curved holes.
5.1.11.7 Angular cored holes. Tolerances for angular cored holes are shown in figure 10.
Y |
X |
Tolerance for X |
0.250 0.500 1.000 |
15 30 45 |
+ 1 + 1 + 1 |
FIGURE 10. Tolerances for investment castings with angular holes.
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