MIL-HDBK-1897(AT)
TABLE II. Dimensional tolerances for general category investment castings.
Dimension |
Tolerance |
up to 1.999 2.000 to 3.999 4.000 to 5.999 6.000 to 11.999 12.000 and over |
+ 0.010 + 0.015 + 0.020 + 0.030 + 0.045 |
5.1.3 Flatness (bow or dish). These tolerances apply regardless of feature size providing the form tolerance zone falls entirely within the tolerance zone for size. Each configuration must be evaluated in relation to alloy, total surface area, and volume of casting (see table III).
TABLE III. Flatness tolerances (bow or dish - plate).
Length |
Tolerance |
up to 0.999 1.000 to 1.999 2.000 to 3.999 4.000 to 6.000 6.000 and over |
+ 0.005 + 0.008 + 0.012 + 0.015 + 0.020 |
5.1.4 Shafts (solid).
5.1.4.1 Straightness. Straightness is the deviation of the cast axis from the true axis. The tolerances shown in table IV apply regardless of feature size.
TABLE IV. Straightness tolerances.
Length |
Tolerance |
up to 1.999 2.000 to 5.999 6.000 and over |
+ 0.010 + 0.020 + 0.030 |
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