2   In production, the tolerance of discrete range under the influence of material properties. For this reason, the tolerance of different series is suitable for the material of different categories:               Group D material:                                                                                                        Precision grade
              Iron base alloy, nickel base alloy, cobalt base alloy, copper alloy                             D1 to D3
              
             Group A material:               
              Group T material:
              Titanium alloy                                                                                                                T1 to T3
  
1  Linear tolerance 

Nominal.	D1		D2		D3		A1		A2		A3		T1		T2		T3
Dimension.range.	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA	Feld	GTA
Up to 6	0.3	14	0.24	13.5	0.2	13	0.3	14	0.24	13.5	0.2	13	0.5	15	0.4	14.5	0.4	14
Over 6 to 10	0.36		0.28		0.22		0.36		0.28		0.22		0.6		0.4		0.4
Over 10 to18	0.44		0.34		0.28		0.44		0.34		0.28		0.7		0.5		0.44
Over 18 to 30	0.52		04		0.34		0.52		0.40		0.34		0.8		0.7		0.52
Over 30 to 50	0.8	14.5	0.62	14	0.5	13.5	0.8	14.5	0.62	14	0.5	13.5	1.0		0.8		0.62
Over 50 to 80	0.9		0.74		0.6		0.9		0.74		0.6		1.5	15.5	1.2	15	0.9	14.5
Over 80 to 120	1.1		0.88		0.7		1.1		0.88		0.7		1.7		1.4		1.1
Over 120 to 180	1.6	15	1.3	14.5	1.0	14	1.6	15	1.3	14.5	1.0	14	2.0		1.6		1.3
Over 180 to 250	2.4	15.5	1.9	15	1.5	14.5	1.9		1.5		1.2		2.4		1.9		1.5
Over 250 to 315	2.6		2.2		1.6		2.6	15.5	2.2	15	1.6	14.5	3.2	16	2.6	15.5
Over 315 to 400	3.6	16	2.8	15.5			2.8		2.4		1.7		3.6		2.8
Over 400 to 500	4.0		3.2				3.2		2.6		1.9		4.0		3.2
Over 500 to 630	5.4	16.5	4.4	16			4.4	16	3.4	15.5			5.4	16.5	4.4	16
Over 630 to 800	5.2		5.0				5.0		4.0				6.2		5.0
Over 800 to 1000	7.2						5.6		4.6				7.2
Over 1000 to 1250							8.8

  
2  Tolerance of shape and position
1） Straightness and Linear shape

Nominal.	D1	D2	D3	A1	A2	A3
Dimension.range.	Feld.	Fled.	Fled.	Fled.	Fled.	Fled.
Up to 6	0.15	0.12	0.10	0.20	0.18	0.15
Over 6 to 10	0.18	0.14	0.12	0.20	0.18	0.15
Over 10 to 18	0.25	0.20	0.15	0.20	0.18	0.15
Over 18 to 30	0.30	0.25	0.20	0.20	0.18	0.15
Over 30 to 50	0.40	0.35	0.25	0.30	0.25	0.20
Over 50 to 80	0.60	0.45	0.30	0.35	0.30	0.25
Over 80 to 120	0.80	0.60	0.45	0.50	0.40	0.30
Over 120 to 180	1.10	0.80	0.60	0.70	0.50	0.40
Over 180 to 250	1.50	1.15	0.90	0.90	0.70	0.55
Over 250 to 315	1.90	1.40	1.12	1.10	0.90	0.70
Over 315 to 400	2.40	1.80	1.50	1.35	1.10	0.90
Over 400 to 500	3.00	2.20	1.80	1.60	1.30	1.10
Over 500 to 630				1.80	1.50	1.30
Over 630 to 800				2.00	1.70	1.50
Over 800 to 1000				2.20	1.90	1.70

 
2） Flatness, surface shape, roundness

Nominal.	D1	D2	D3	A1	A2	A3
Dimension.range.	Feld.	Feld.	Feld	Feld	Feld	Feld
Up to 6	0.20	0.15	0.12	0.20	0.18	0.15
Over 6 to 10	0.25	0.20	0.15	0.20	0.18	0.15
Over 10 to 18	0.40	0.30	0.20	0.25	0.22	0.18
Over 18 to 30	0.50	0.40	0.30	0.30	0.25	0.20
Over 30 to 50	0.60	0.50	0.40	0.40	0.30	0.25
Over 50 to 80	0.80	0.65	0.50	0.50	0.40	0.30
Over 80 to 120	1.00	0.80	0.65	0.65	0.50	0.40
Over 120 to 180	1.30	1.10	0.85	0.90	0.70	0.55
Over 180 to 250	1.80	1.15	1.20	1.15	0.90	0.75
Over 250 to 315	2.30	1.80	1.50	1.35	1.10	0.90
Over 315 to 400	2.90	2.30	1.85	1.60	1.35	1.10
Over 400 to 500	3.40	2.80	2.20	1.80	1.55	1.30
Over 500 to 630				2.00	1.80	1.50
Over 630 to 800				2.25	2.00	1.70
Over 800 to 1000				2.50	2.00	1.90

 

 
















3） Co-axiality, cylinder shape

Nominal.	D1	D2	D3	A1	A2	A3
Dimension.range.	Feld.	Feld.	Feld	Feld	Feld	Feld
Up to 6	0.30	0.25	0.20	0.25	0.20	0.18
Over 6 to 10	0.35	0.30	0.25	0.25	0.20	0.18
Over 10 to 18	0.50	0.40	0.30	0.30	0.25	0.20
Over 18 to 30	0.60	0.50	0.40	0.40	0.30	0.25
Over 30 to 50	0.80	0.60	0.50	0.60	0.45	0.30
Over 50 to 80	1.10	0.80	0.60	0.80	0.70	0.45
Over 80 to 120	1.30	1.00	0.80	1.10	0.90	0.65
Over 120 to 180	1.80	1.40	1.10	1.15	1.30	0.90
Over 180 to 250	2.40	1.90	1.60	2.00	1.60	1.30
Over 250 to 315	3.00	2.50	2.00	2.40	2.00	1.60
Over 315 to 400	3.80	3.20	2.50	2.90	2.40	2.00
Over 400 to 500	4.40	3.70	3.00	3.50	3.00	2.50
Over 500 to 630
Over 630 to 800
Over 800 to 1000

 


















4）Parallelism , symmetry         

Nominal.	D1	D2	D3	A1	A2	A3
Dimension.range.	Feld.	Feld.	Feld	Feld	Feld	Feld
Less than 6	0.25	0.20	0.15	0.20	0.18	0.15
6 ～ 10	0.30	0.25	0.20	0.20	0.18	0.15
10 ～ 18	0.40	0.30	0.25	0.25	0.20	0.18
18 ～ 30	0.50	0.40	0.30	0.35	0.25	0.20
30 ～ 50	0.70	0.60	0.50	0.45	0.30	0.25
50 ～ 80	1.00	0.80	0.65	0.55	0.40	0.30
80 ～ 120	1.30	1.10	0.90	0.70	0.50	0.45
120 ～ 180	1.80	1.15	1.20	0.90	0.75	0.60
180 ～ 250	2.50	2.00	1.60	1.20	1.00	0.80
250 ～ 315	3.15	2.60	2.00	1.50	1.20	1.00
315 ～ 400	3.80	3.20	2.50	1.90	1.60	1.30
400 ～ 500	4.40	3.80	3.20	2.40	2.00	1.60
500 ～ 630				3.00	2.50	2.00
630 ～ 800				3.80	3.15	2.50
800 ～ 1000				4.80	4.00	3.20

 
3  Angle tolerance       

Nominal Dimension tolerance	Accuracy
	1		2		3
	Maximum dimension deviation
	Point (cent)	mm/100mm	Point (cent)	mm/100mm	Point (cent)	mm/100mm
Up to 30	21 30	0.87	21 30	0.87	21 20	0.58
Over 30 to 100	21 30	0.87	21 20	0.58	21 15	0.44
Over 100 to 200	21 30	0.87	21 15	0.44	21 10	0.29
over 200	21 20	0.58	21 15	0.44	21 10	0.29

 Annotation：1）the nominal dimension range is determined by the shorter side
2）the angle may deviate in both direction
  
4  Radius of curvature

Nominal dimension Range (mm)	Accuracy grade
	1	2	3
Up to  5	±0.30	±0.20	±0.15
Over 5 to 10	±0.45	±0.35	±0.25
Over 10 to 120	±0.70	±0.50	±0.40
over 120	Linear

5  Tolerance of wall thickness

Length of smallest side of surface (lig3) in mm	Material group D(Fe,Ni.Co and Cu alloys) in mm	Material group A(Al. Mg alloys) in mm	Material group T(Ti alloys) in mm
Up to  50	±0.25	±0.25	±0.30
Over 50 to 100	±0.30	±0.30	±0.40
Over 100 to 180	±0.40	±0.40	±0.50
Over 180 to 315	±0.50	±0.50	±0.60
over 315	±0.60	±0.60	±0.70

 
6  surface quality  

Surface standards	Material group D		Material group A		Material group T
	CLA.(uich)	RA(um)	CLA(uich)	RA(um)	CLA(uich)	RA(un)
N7	63	1.6
N8	125	3.2	125	3.2
N9	250	6.3	250	6.3	250	6.3

Zone N7,N8 and special surface must be agreed separately and entered in the drawing in accordance with DIN ISO1302. Unless otherwise agreed, N9 ( in shot-blasted state) is the normal delivery condition.
 
7  dimension for holes, blind holes and channels    

Or	Max. length or depth
	through	Blind
2 to  4	=1×d	=0.6×d
Over 2 to 6	=2×d	=1.0×d
Over 6 to 10	=3×d	=1.6×d
over 10	=4×d	=2.0×d

 
8  dimension for slots and grooves  

b(mm) width	Greatest depth below
	open	closed
2 ～ 4	=1×d	=0.6×d
2 ～ 6	=2×d	=1.0×d
6 ～ 10	=3×d	=1.6×d
over 10	=4×d	=2.0×d

  
9  ISO8062

Dimension range		tolerance grade
over	to	3	4	5	6	7	8	9	10	11	12	13	14	15	16
—	3	0.14	0.20	0.28	0.40	0.56	0.80	1.2	1.6	1.6	1.6	2.3	—	—	—
3	6	0.16	0.24	0.32	0.48	0.64	0.90	1.3	1.8	2.5	2.5	2.5	—	—	—
6	10	0.18	0.26	0.36	0.52	0.74	1.0	1.5	2.0	2.8	4.2	4.2	—	—	—
10	16	0.20	0.28	0.38	0.54	0.78	1.1	1.6	2.2	3.0	4.4	5.0	—	—	—
16	25	0.22	0.30	0.42	0.58	0.82	1.2	1.7	2.4	3.2	4.6	6.0	8	10	12
25	40	0.24	0.32	0.46	0.64	0.90	1.3	1.8	2.6	3.6	5.0	7.0	9	11	14
40	63	0.26	0.36	0.50	0.70	1.0