| Flatness (tombstones & plates) | .0005 / 12×12 |
| Parallelism (plates) | .0005 / 12, Max .002 total |
| Perpendicularity | .0008 / 12, Min .001, Max .002 / 48 |
| Surface Finish | 63 RMS |
| Face Thickness | ≤18” = ±.002, >18” = ±.003 |
| Tapped Holes (non-accumulative) | ±.005 |
| Precision Bushing I.D. | +0.0013 / +0.0007 |
| Precision Bushing Concentricity | 0.0001 |
| Bored or Precision Bushing Hole to Adjacent Hole | ±.0005 |
| First Row Bushing Hole Location from Datums | ±.002 |
| Bored or Precision Bushing Hole Spacing (non-accumulative) | 0–10″: ±.0005 10–20″: ±.0008 20–30″: ±.0010 30–40″: ±.0012 |
| Note: | For aluminum, add 50% to these tolerances |