Dimensional tolerances
Normal Dimension of rough casting		Overall Dimension (In Millimeter) [IS - 11166 Class II]
over	up to	Up to 6mm	Over 6 Up to 10	Over 10 Up to 18	Over 18 Up to 30	Over 30 Up to 80	Over 80 Up to 180	Over 180 Up to 300	Over 300 Up to 500
	6	0.1	0.12	0.15	0.2	0.2	0.25	0.3	0.35
6	10	-	0.12	0.15	0.25	0.25	0.3	0.35	0.45
10	18	-	-	0.2	0.3	0.3	0.35	0.4	0.55
10	30	-	-	-	0.3	0.3	0.45	0.5	0.65
30	80	-	-	-	-	0.3	0.55	0.6	0.75
80	180	-	-	-	-	-	0.6	0.7	0.9
180	300	-	-	-	-	-	-	1	1.15
300	500	-	-	-	-	-	-	-	2

Tolerance for straightness, flatness, parallelism, shape
Precision class	Length of the tolerated element
	to 25 mm	25 to 50 mm	up to 50 mm
	allowed difference
D1	0.15 mm	0.25 mm	0.60%
D2	0.10 mm	0.20 mm	0.40%

Tolerance for angle values and right angles
Precision class	Nominal dimensions
	to 30 mm	30 to 100 mm	100 to 200mm	up to 200mm
D1	Allowed deviation
minute degree	30	30	30	20
mm / 100 mm	0.87	0.87	0.87	0.58
D2	Allowed deviation
minute degree	30	20	15	15
mm / 100 mm	0.87	0.58	0.44	0.44

Surface quality according to ISO R 468, DIN 4769 and VSM10321
	Ra	Rz	Rt
N9	6.3	23-32	25-38