MIL-HDBK-1897(AT)
FIGURE 15. Tolerances between holes in investment castings.
5.1.11.12.2 Positioning. Holes (or bosses) should be located within tolerances of true position on line BC as specified in figure 16.
FIGURE 16. Hole positioning tolerances for investment castings.
5.1.11.12.3 Parallelism. Centerlines of cored holes should be held to parallelism tolerances as specified in figure 17.
FIGURE 17. Hole parallelism tolerances for investment castings.
16
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