Metric Weight Tolerances Chart

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Metric Weight Tolerances
The table below is a listing of the tolerances of various classes of masses. The weight value can deviate above or
below the nominal value by the tolerance defined. To determine the tolerance of a mass, look at the denomination
or nominal value of the weight and the appropriate class you need.
International Organization of
Troemner
ANSI/ASTM
National Bureau of Standards
NIST Handbooks
SM
UltraClass
Legal Metrology Recommendation R111*
E617
Circular 547 Section 1
105-1**
44
E1
E2
F1
F2
M1
M2
M3
0
1
2
3
4
5
6
7
J
M
S
S-1
P
Q
T
F
Ind
Grp
Ind
Grp
Accept
Maint
Denomination
Denomination
mg
mg
mg
mg
mg
mg
Metric
mg
mg
mg
mg
mg
mg
mg
mg
mg
mg
mg
mg
g & mg
g & mg
g & mg
g & mg
mg
mg
g & mg
g & mg
g & mg g & mg
Metric
5000 kg
25 000
85 000
250 000
850 000
1 250 000
100 g
250 g
500 g
750 g
500 g
5000 kg
3000 kg
60
150
300
450
300
3000 kg
2000 kg
10 000
33 000
100 000
330 000
1 000 000
40
100
200
300
200
2000 kg
1000 kg
1 600
5 000
16 000
50 000
160 000
500 000
20
50
100
150
20 g
50 g
150 g
100
1000 kg
500 kg
800
2 500
8 000
25 000
80 000
250 000
10
25
50
75
10
25
75
50 g
500 kg
300 kg
6.0
15
30
45
30
300 kg
200 kg
300
1 000
3 000
10 000
30 000
100 000
4.0
10
20
30
4.0
10
30
20
200 kg
100 kg
160
500
1 600
5 000
16 000
50 000
2.0
5
10
15
2.0
5
15
10
100 kg
50 kg
25
75
250
750
2500
7500
25000
63
125
250
500
1.0
2.5
5
7.5
500
1.0
2.5
7.5
5.0
50 kg
30 kg
45
38
75
150
300
600 mg
1.5
3
4.5
3.0
30 kg
25 kg
37
31
62
125
250
500
1.2
2.5
4.5
125
62
250
500 mg
1.2
4.5
2.5
25 kg
20 kg
10
30
100
300
1000
3000
10000
30
25
50
100
200
400
1.0
2
3.8
100
50
200
400
1
3.8
2.0
750
1500
20 kg
10 kg
5
15
50
150
500
1500
5000
15
13
25
50
100
200
500 mg
1
2.2
50
25
100
200
500 mg
2.2
1.0
500
1000
10 kg
5 kg
2.5
7.5
25
75
250
750
2500
7
6
12
25
50
100
250
500 mg
1.4
25
12
50
100
250
1.4
0.50
400
800
5 kg
3 kg
4.5
3.8
7.5
15
30
60
150
300
1.0
15
7.5
30
60
150
1.0
0.30
250
500
3 kg
2 kg
1.0
3.0
10
30
100
300
1000
3.0
2.5
5.0
10
20
40
100
200
750 mg
10
5.0
20
40
100
750 mg
0.20
200
400
2 kg
1 kg
0.5
1.5
5
15
50
150
500
1.5
1.3
2.5
5.0
10
20
50
100
470
5.0
2.5
10
20
50
470
0.10
125
250
1 kg
500 g
0.25
0.75
2.5
7.5
25
75
250
0.7
0.60
1.2
2.5
5.0
10
30
50
300
2.5
1.2
5.0
10
30
300
70 mg
88
175
500 g
300 g
0.45
0.38
0.75
1.5
3.0
6.0
20
30
210
1.5
0.75
3.0
6.0
20
210
60
75
150
300 g
200 g
0.10
0.30
1.0
3.0
10
30
100
0.30
0.25
0.50
1.0
2.0
4.0
15
20
160
1.0
0.50
2.0
4.0
15
160
40
50
100
200 g
100 g
0.05
0.15
0.5
1.5
5
15
50
0.15
0.13
0.25
0.50
1.0
2.0
9
10
100
0.50
0.25
1.0
2.0
9.0
100
20
35
70
100 g
50 g
0.030
0.10
0.30
1.0
3.0
10
30
0.07
0.060
0.12
0.25
0.60
1.2
5.6
7
62
0.25
0.12
0.60
1.2
5.6
62
10
20
40
50 g
30 g
0.044
0.037
0.074
0.15
0.45
0.90
4.0
5
44
0.15
0.074
0.45
0.90
4.0
44
6.0
15
30
30 g
0.154
20 g
0.025
0.080
0.25
0.8
2.5
8
25
0.044
0.037
0.074
0.10
0.35
0.70
3.0
3
33
0.10
0.074
0.35
0.70
3.0
33
4.0
10
20
20 g
10 g
0.020
0.060
0.20
0.6
2
6
20
0.030
0.025
0.050
0.074
0.25
0.50
2.0
2
21
0.050
0.074
0.25
0.50
2.0
21
2.0
8
15
10 g
5 g
0.015
0.050
0.15
0.5
1.5
5
15
0.020
0.017
0.034
0.054
0.18
0.36
1.3
2
13
0.034
0.054
0.18
0.36
1.3
13
1.5
5
10
5 g
3 g
0.020
0.017
0.034
0.054
0.15
0.30
0.95
2.0
9.4
0.034
0.054
0.15
0.30
0.95
9.4
1.3
4
8
3 g
0.065
0.105
2 g
0.012
0.040
0.12
0.4
1.2
4
12
0.020
0.017
0.034
0.054
0.13
0.26
0.75
2.0
7.0
0.034
0.054
0.13
0.26
0.75
7.0
1.1
3
6
2 g
1 g
0.010
0.030
0.10
0.3
1.0
3
10
0.020
0.017
0.034
0.054
0.10
0.20
0.50
2.0
4.5
0.034
0.054
0.10
0.20
0.50
4.5
0.90
2
4
1 g
500 mg
0.008
0.025
0.08
0.25
0.8
2.5
0.005
0.005
0.010
0.025
0.080
0.16
0.38
1.0
3.0
0.010
0.025
0.080
0.16
0.38
3.0
0.72
1.5
3.0
500 mg
300 mg
0.005
0.005
0.010
0.025
0.070
0.14
0.30
1.0
2.2
0.010
0.025
0.070
0.14
0.30
2.2
0.61
1.0
2.0
300 mg
0.020
0.055
200 mg
0.006
0.020
0.06
0.20
0.6
2.0
0.005
0.005
0.010
0.025
0.060
0.12
0.26
1.0
1.8
0.010
0.025
0.060
0.12
0.26
1.8
0.54
0.8
1.5
200 mg
100 mg
0.005
0.015
0.05
0.15
0.5
1.5
0.005
0.005
0.010
0.025
0.050
0.10
0.20
1.0
1.2
0.010
0.025
0.050
0.10
0.20
1.2
0.43
0.5
1.0
100 mg
50 mg
0.004
0.012
0.04
0.12
0.4
0.005
0.005
0.010
0.014
0.042
0.085
0.16
0.50
0.88
0.010
0.010
0.014
0.042
0.085
0.16
0.88
0.35
0.4
0.8
50 mg
30 mg
0.005
0.005
0.010
0.014
0.038
0.075
0.14
0.50
0.68
0.010
0.010
0.014
0.038
0.075
0.14
0.68
0.30
0.3
0.6
30 mg
0.020
0.034
20 mg
0.003
0.010
0.03
0.10
0.3
0.005
0.005
0.010
0.014
0.035
0.070
0.12
0.50
0.56
0.010
0.010
0.014
0.035
0.070
0.12
0.56
0.26
0.2
0.4
20 mg
10 mg
0.002
0.008
0.025
0.08
0.25
0.005
0.005
0.010
0.014
0.030
0.060
0.10
0.50
0.4
0.010
0.010
0.014
0.030
0.060
0.10
0.40
0.21
0.15
0.3
10 mg
5 mg
0.002
0.006
0.020
0.06
0.20
0.005
0.005
0.010
0.014
0.028
0.055
0.080
0.20
0.010
0.010
0.014
0.028
0.055
0.080
0.17
0.05
0.1
5 mg
3 mg
0.005
0.005
0.010
0.014
0.026
0.052
0.070
0.20
0.010
0.010
0.014
0.026
0.052
0.070
0.14
0.05
0.1
3 mg
0.020
0.034
2 mg
0.002
0.006
0.020
0.06
0.20
0.005
0.005
0.010
0.014
0.025
0.050
0.060
0.20
0.010
0.010
0.014
0.025
0.050
0.060
0.12
0.05
0.1
2 mg
1 mg
0.002
0.006
0.020
0.06
0.20
0.005
0.005
0.010
0.014
0.025
0.050
0.050
0.10
0.010
0.010
0.014
0.025
0.050
0.050
0.10
0.05
0.1
1 mg
0.5 mg
0.010
0.010
0.014
0.025
0.5 mg
0.3 mg
0.010
0.010
0.014
0.025
0.3 mg
0.020
0.034
0.2 mg
0.010
0.010
0.014
0.025
0.2 mg
0.1 mg
0.010
0.010
0.014
0.025
0.1 mg
0.05 mg
0.010
0.010
0.014
0.05 mg
* OIML – International Recommendation R111 replaces International Recommendation numbers 1, 2, 20, 52. OIML tolerances shown for weights 100kg and larger are proposed tolerances.
* * NIST 105-1 Class F tolerances are rounded to two significant figures

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