List of Charts
* Easy access to all the data charts that appear on this page
Overview
The ISO metric screw thread family is a series of general-use, 60° straight threads. It is the most commonly used worldwide thread system. It was one of the first topics standardized by the ISO committee as early as 1947 and is still used today.
ISO Standards
ISO Standard
Topic
What's Include?
ISO 261
Possible Combinations
Lists in a chart all the possible Diameter/Pitch Combinations .
Defines the Coase Pitch and Fine Pitch series.
ISO 68
Basic Profile
Defines the basic profile of the thread including Pitch , Pitch Diameter, Heights, etc.
A drawing with the above thread parameters.
Formulas for the above parameters.
ISO 965-1
Tolerances
The main document for ISO Metric Threads
List and definition of symbols .
Tolerance classes definition.
Designation rules
Allowance Chart - Per class and pitch .
Normal Length of Engagement Chart - Per diameter and pitch .
Tolerance fields Charts - Per diameter and pitch .
Root radius Charts and formulas.
Recommended Tolerance classes - Charts per tolerance quality and length of engagement .
Formulas that were used to construct the charts.
ISO 965-2
Limits
Charts for the allowed range of pitch , major and minor diameters for classes 6H and 6g .
The values are calculated from the definitions of ISO 965-1.
They have limited use since they provide data only for the default classes.
Designations
The description always begins with a capital M , followed by the nominal thread diameter in millimeters. For example, M8 is a thread with a nominal diameter of 8 mm (0.315″). If no characters follow the M and diameter, it means that all the other parameters are according to the default as defined in ISO 965-1:
ISO Metric Thread Defaults :
Pitch – According to the Coarse pitch series.
Number of Starts – One.
Class – 6g for external threads and 6H for internal threads. (Valid above 1.6 mm / 0.063″)
Direction – Right-hand thread.
Cells with Golden Background – Values are derived from the above defaults .
Cells with White Background – Values are derived from the description .
Designation
Ø
Pitch
Internal or
External
Lead
Number of Starts
Pitch Diameter Class
Major/ Minor Diameter Class
Thread Direction
M8
8
1.25
Both
1.25
1
6H/6g
6H/6g
Right Hand
M8 X 0.75
8
0.75
Both
0.75
1
6H/6g
6H/6g
Right Hand
M8 X Ph2.25P0.75
8
0.75
Both
2.25
3
6H/6g
6H/6g
Right Hand
M8 - 4g8e
8
1.25
External
1.25
1
4g
8e
Right Hand
M8 X 0.75 - 5G
8
0.75
Internal
1.25
1
5G
5G
Right Hand
M8 - RH
8
1.25
Both
0.75
1
6H/6g
6H/6g
Right Hand
M8 Ph2.25P0.75 - 4g8e - LH
8
0.75
External
2.25
3
4g
8e
Left Hand
Explanation:
Pitch : Designated by “X P “. For example, M8 X 0.75 means an 8 mm (0.315″) thread with a pitch of 0.75 mm (0.03″ or 34 TPI ). If the “X P” is omitted , the pitch is defined by the Coase Pitch Series according to ISO-261.
Number of starts : Designated by “Ph” . For example, M8 X Ph2.25P0.75 . In this case, 2.25 mm is the lead , and 0.75 mm is the pitch . Ph must be a multiple of P since the number of starts equals Ph/P. For this example, the number of starts is 3 . If Ph is omitted, the thread has a single start.
Class : The class appears after the pitch . It is preceded by a “-” and consists of two or four characters. For example, M8 X 0.75 – 5g6g .
Small letters represent external threads, while capital letters represent internal threads.
Two charters long class mean that the class is valid for both the pitch and major/minor diameters.
Four long charters mean a separate class for the pitch diameter (The first two characters) and major/minor diameters (The first two characters).
For detailed explanations about classes, see the class section below.
If the class is omitted, the default class is used. (See above table)
Thread Direction : The direction appears after the class and is preceded by a “-“. If omitted, the direction is right hand. If “- LH” appears, it designates a left-hand thread. For example, M8 X 0.75 – 5g6g – LH is a left-hand thread designation.
Standard ISO metric series
The ISO Metric Thread System consists of two series:
Thread Series
From Diameter
To Diameter
Pitches Combinations per Diameter
Number of Combinations
1 mm (0.04")
68 mm (2.7")
1
50
1 mm (0.04")
300 mm (11.8")
1-5
118
Possible Combinations (Diameter/Pitch)
The below charts show all the possible thread size combinations of diameters/pitch as defined in ISO-261
MC – Metric Coarse Thread Series
MF – Metric Fine Thread Series
Click to get the Full Thread Data-Sheet for a specific combination
Possible Combinations for M27 – M300
Basic Thread Dimensions
The basic dimensions are nominal dimensions of a metric thread profile without allowance and tolerances (The thread class defines that). They are based on standard ISO 68-1. The basic dimensions can be used for design. However, for manufacturing and machining, you need the allowable range of each dimension. This data can be found in ISO 951-1 or in the Limits and Dimensions section below. All these parameters are derived from simple formulas based on the thread’s nominal diameter and pitch .
Symbols
List of symbols used in charts and formulas of ISO Metric Threads
The below video provides a short explanation of the threading terms
External Thread
\( \large d=\text{Basic Diameter} \)
\( \large P=\text{Pitch} \)
\( \large H=\frac{\sqrt{3}}{2}\times{P} = 0.866025404\times{P} \)
\( \large h_s=\frac{5}{8}\times{H} \)
\( \large h_{as}=\frac{3}{8}\times{H}\)
\( \large d_2=d-{2}\times{h_{as}} \)
\( \large d_1=d-{2}\times{h_s}\)
\( \large F_{cs}=\frac{P}{8}\)
\( \large F_{rs}=\frac{P}{4}\)
internal thread
\( \large D=\text{Basic Diameter} \)
\( \large P=\text{Pitch} \)
\( \large H=\frac{\sqrt{3}}{2}\times{P} = 0.866025404\times{P} \)
\( \large h_n=\frac{5}{8}\times{H} \)
\( \large h_{dn}=\frac{1}{4}\times{H}\)
\( \large D_1=D-{2}\times{h_n}\)
\( \large D_2=D1+{2}\times{h_{an}}\)
\( \large F_{rn}=\frac{P}{8}\)
\( \large F_{cn}=\frac{P}{4}\)
The above formulas provide the exact results . You case use them directly, utilize our Thread Calculator[ , or browse the below charts .
Metric thread Dimensions Charts
Click the Thread Link to get the Full Thread Data for all Classes
* All dimensions are in mm. To view Inch translation click the Thread Link
M1
1
0.25
0.838
0.729
0.135
0.063
0.77
5.43
MC
1,000
M1.1
1.1
0.25
0.938
0.829
0.135
0.063
0.87
4.85
MC
1,001
M1.2
1.2
0.25
1.038
0.929
0.135
0.063
0.97
4.39
MC
1,002
M1.4
1.4
0.3
1.205
1.075
0.162
0.075
1.13
4.53
MC
1,003
M1.6
1.6
0.35
1.373
1.221
0.189
0.088
1.28
4.64
MC
1,004
M1.8
1.8
0.35
1.573
1.421
0.189
0.088
1.48
4.05
MC
1,005
M2
2
0.4
1.74
1.567
0.217
0.1
1.64
4.18
MC
1,006
M2.2
2.2
0.45
1.908
1.713
0.244
0.113
1.79
4.29
MC
1,007
M2.5
2.5
0.45
2.208
2.013
0.244
0.113
2.09
3.71
MC
1,008
M3
3
0.5
2.675
2.459
0.271
0.125
2.55
3.4
MC
1,009
M3.5
3.5
0.6
3.11
2.85
0.325
0.15
2.95
3.51
MC
1,010
M4
4
0.7
3.545
3.242
0.379
0.175
3.36
3.6
MC
1,011
M4.5
4.5
0.75
4.013
3.688
0.406
0.188
3.82
3.4
MC
1,012
M5
5
0.8
4.48
4.134
0.433
0.2
4.27
3.25
MC
1,013
M6
6
1
5.35
4.917
0.541
0.25
5.09
3.4
MC
1,015
M7
7
1
6.35
5.917
0.541
0.25
6.09
2.87
MC
1,016
M8
8
1.25
7.188
6.647
0.677
0.313
6.86
3.17
MC
1,017
M9
9
1.25
8.188
7.647
0.677
0.313
7.86
2.78
MC
1,018
M10
10
1.5
9.026
8.376
0.812
0.375
8.64
3.03
MC
1,019
M11
11
1.5
10.026
9.376
0.812
0.375
9.64
2.73
MC
1,020
M12
12
1.75
10.863
10.106
0.947
0.438
10.41
2.94
MC
1,021
M14
14
2
12.701
11.835
1.083
0.5
12.18
2.87
MC
1,022
M16
16
2
14.701
13.835
1.083
0.5
14.18
2.48
MC
1,024
M18
18
2.5
16.376
15.294
1.353
0.625
15.73
2.78
MC
1,026
M20
20
2.5
18.376
17.294
1.353
0.625
17.73
2.48
MC
1,027
M22
22
2.5
20.376
19.294
1.353
0.625
19.73
2.24
MC
1,028
M24
24
3
22.051
20.752
1.624
0.75
21.27
2.48
MC
1,029
M27
27
3
25.051
23.752
1.624
0.75
-99
2.18
MC
1,032
M30
30
3.5
27.727
26.211
1.894
0.875
-99
2.3
MC
1,034
M33
33
3.5
30.727
29.211
1.894
0.875
-99
2.08
MC
1,036
M36
36
4
33.402
31.67
2.165
1
-99
2.18
MC
1,038
M39
39
4
36.402
34.67
2.165
1
-99
2
MC
1,040
M42
42
4.5
39.077
37.129
2.436
1.125
-99
2.1
MC
1,042
M45
45
4.5
42.077
40.129
2.436
1.125
-99
1.95
MC
1,043
M48
48
5
44.752
42.587
2.706
1.25
-99
2.04
MC
1,044
M52
52
5
48.752
46.587
2.706
1.25
-99
1.87
MC
1,046
M56
56
5.5
52.428
50.046
2.977
1.375
-99
1.91
MC
1,048
M60
60
5.5
56.428
54.046
2.977
1.375
-99
1.78
MC
1,050
M64
64
6
60.103
57.505
3.248
1.5
-99
1.82
MC
1,052
M68
68
6
64.103
61.505
3.248
1.5
-99
1.71
MC
1,054
* All dimensions are in mm. To view Inch translation click the Thread Link
Click the Thread Link to get the Full Thread Data for all classes
* All dimensions are in mm. To view Inch translation click the Thread Link
M1 X 0.2
1
0.2
0.87
0.783
0.108
0.05
0.82
4.18
MF
2,000
M1.1 X 0.2
1.1
0.2
0.97
0.883
0.108
0.05
0.92
3.75
MF
2,001
M1.2 X 0.2
1.2
0.2
1.07
0.983
0.108
0.05
1.02
3.4
MF
2,002
M1.4 X 0.2
1.4
0.2
1.27
1.183
0.108
0.05
1.22
2.87
MF
2,003
M1.6 X 0.2
1.6
0.2
1.47
1.383
0.108
0.05
1.42
2.48
MF
2,004
M1.8 X 0.2
1.8
0.2
1.67
1.583
0.108
0.05
1.62
2.18
MF
2,005
M2 X 0.25
2
0.25
1.838
1.729
0.135
0.063
1.77
2.48
MF
2,006
M2.2 X 0.25
2.2
0.25
2.038
1.929
0.135
0.063
1.97
2.24
MF
2,007
M2.5 X 0.35
2.5
0.35
2.273
2.121
0.189
0.088
2.18
2.81
MF
2,008
M3 X 0.35
3
0.35
2.773
2.621
0.189
0.088
2.68
2.3
MF
2,009
M3.5 X 0.35
3.5
0.35
3.273
3.121
0.189
0.088
3.18
1.95
MF
2,010
M4 X 0.5
4
0.5
3.675
3.459
0.271
0.125
3.55
2.48
MF
2,011
M4.5 X 0.5
4.5
0.5
4.175
3.959
0.271
0.125
4.05
2.18
MF
2,012
M5 X 0.5
5
0.5
4.675
4.459
0.271
0.125
4.55
1.95
MF
2,013
M6 X 0.75
6
0.75
5.513
5.188
0.406
0.188
5.32
2.48
MF
2,014
M7 X 0.75
7
0.75
6.513
6.188
0.406
0.188
6.32
2.1
MF
2,015
M8 X 0.75
8
0.75
7.513
7.188
0.406
0.188
7.32
1.82
MF
2,017
M8 X 1
8
1
7.35
6.917
0.541
0.25
7.09
2.48
MF
2,016
M9 X 0.75
9
0.75
8.513
8.188
0.406
0.188
8.32
1.61
MF
2,019
M9 X 1
9
1
8.35
7.917
0.541
0.25
8.09
2.18
MF
2,018
M10 X 0.75
10
0.75
9.513
9.188
0.406
0.188
9.32
1.44
MF
2,022
M10 X 1
10
1
9.35
8.917
0.541
0.25
9.09
1.95
MF
2,021
M10 X 1.25
10
1.25
9.188
8.647
0.677
0.313
8.86
2.48
MF
2,020
M11 X 0.75
11
0.75
10.513
10.188
0.406
0.188
10.32
1.3
MF
2,024
M11 X 1
11
1
10.35
9.917
0.541
0.25
10.09
1.76
MF
2,023
M12 X 1
12
1
11.35
10.917
0.541
0.25
11.09
1.61
MF
2,027
M12 X 1.25
12
1.25
11.188
10.647
0.677
0.313
10.86
2.04
MF
2,026
M12 X 1.5
12
1.5
11.026
10.376
0.812
0.375
10.64
2.48
MF
2,025
M14 X 1
14
1
13.35
12.917
0.541
0.25
13.09
1.37
MF
2,030
M14 X 1.25
14
1.25
13.188
12.647
0.677
0.313
12.86
1.73
MF
2,029
M14 X 1.5
14
1.5
13.026
12.376
0.812
0.375
12.64
2.1
MF
2,028
M16 X 1
16
1
15.35
14.917
0.541
0.25
15.09
1.19
MF
2,032
M16 X 1.5
16
1.5
15.026
14.376
0.812
0.375
14.64
1.82
MF
2,031
M18 X 1
18
1
17.35
16.917
0.541
0.25
17.09
1.05
MF
2,035
M18 X 1.5
18
1.5
17.026
16.376
0.812
0.375
16.64
1.61
MF
2,034
M18 X 2
18
2
16.701
15.835
1.083
0.5
16.18
2.18
MF
2,033
M20 X 1
20
1
19.35
18.917
0.541
0.25
19.09
0.94
MF
2,038
M20 X 1.5
20
1.5
19.026
18.376
0.812
0.375
18.64
1.44
MF
2,037
M20 X 2
20
2
18.701
17.835
1.083
0.5
18.18
1.95
MF
2,036
M22 X 1
22
1
21.35
20.917
0.541
0.25
21.09
0.85
MF
2,041
M22 X 1.5
22
1.5
21.026
20.376
0.812
0.375
20.64
1.3
MF
2,040
M22 X 2
22
2
20.701
19.835
1.083
0.5
20.18
1.76
MF
2,039
M24 X 1
24
1
23.35
22.917
0.541
0.25
23.09
0.78
MF
2,044
M24 X 1.5
24
1.5
23.026
22.376
0.812
0.375
22.64
1.19
MF
2,043
M24 X 2
24
2
22.701
21.835
1.083
0.5
22.18
1.61
MF
2,042
M27 X 1
27
1
26.35
25.917
0.541
0.25
-99
0.69
MF
2,047
M27 X 1.5
27
1.5
26.026
25.376
0.812
0.375
-99
1.05
MF
2,046
M27 X 2
27
2
25.701
24.835
1.083
0.5
-99
1.42
MF
2,045
M30 X 1
30
1
29.35
28.917
0.541
0.25
-99
0.62
MF
2,051
M30 X 1.5
30
1.5
29.026
28.376
0.812
0.375
-99
0.94
MF
2,050
M30 X 2
30
2
28.701
27.835
1.083
0.5
-99
1.27
MF
2,049
M30 X 3
30
3
28.051
26.752
1.624
0.75
-99
1.95
MF
2,048
M33 X 1.5
33
1.5
32.026
31.376
0.812
0.375
-99
0.85
MF
2,054
M33 X 2
33
2
31.701
30.835
1.083
0.5
-99
1.15
MF
2,053
M33 X 3
33
3
31.051
29.752
1.624
0.75
-99
1.76
MF
2,052
M36 X 1.5
36
1.5
35.026
34.376
0.812
0.375
-99
0.78
MF
2,057
M36 X 2
36
2
34.701
33.835
1.083
0.5
-99
1.05
MF
2,056
M36 X 3
36
3
34.051
32.752
1.624
0.75
-99
1.61
MF
2,055
M39 X 1.5
39
1.5
38.026
37.376
0.812
0.375
-99
0.72
MF
2,060
M39 X 2
39
2
37.701
36.835
1.083
0.5
-99
0.97
MF
2,059
M39 X 3
39
3
37.051
35.752
1.624
0.75
-99
1.48
MF
2,058
M42 X 1.5
42
1.5
41.026
40.376
0.812
0.375
-99
0.67
MF
2,064
M42 X 2
42
2
40.701
39.835
1.083
0.5
-99
0.9
MF
2,063
M42 X 3
42
3
40.051
38.752
1.624
0.75
-99
1.37
MF
2,062
M42 X 4
42
4
39.402
37.67
2.165
1
-99
1.85
MF
2,061
M45 X 1.5
45
1.5
44.026
43.376
0.812
0.375
-99
0.62
MF
2,068
M45 X 2
45
2
43.701
42.835
1.083
0.5
-99
0.83
MF
2,067
M45 X 3
45
3
43.051
41.752
1.624
0.75
-99
1.27
MF
2,066
M45 X 4
45
4
42.402
40.67
2.165
1
-99
1.72
MF
2,065
M48 X 1.5
48
1.5
47.026
46.376
0.812
0.375
-99
0.58
MF
2,072
M48 X 2
48
2
46.701
45.835
1.083
0.5
-99
0.78
MF
2,071
M48 X 3
48
3
46.051
44.752
1.624
0.75
-99
1.19
MF
2,070
M48 X 4
48
4
45.402
43.67
2.165
1
-99
1.61
MF
2,069
M52 X 1.5
52
1.5
51.026
50.376
0.812
0.375
-99
0.54
MF
2,076
M52 X 2
52
2
50.701
49.835
1.083
0.5
-99
0.72
MF
2,075
M52 X 3
52
3
50.051
48.752
1.624
0.75
-99
1.09
MF
2,074
M52 X 4
52
4
49.402
47.67
2.165
1
-99
1.48
MF
2,073
M56 X 1.5
56
1.5
55.026
54.376
0.812
0.375
-99
0.5
MF
2,080
M56 X 2
56
2
54.701
53.835
1.083
0.5
-99
0.67
MF
2,079
M56 X 3
56
3
54.051
52.752
1.624
0.75
-99
1.01
MF
2,078
M56 X 4
56
4
53.402
51.67
2.165
1
-99
1.37
MF
2,077
M60 X 1.5
60
1.5
59.026
58.376
0.812
0.375
-99
0.46
MF
2,084
M60 X 2
60
2
58.701
57.835
1.083
0.5
-99
0.62
MF
2,083
M60 X 3
60
3
58.051
56.752
1.624
0.75
-99
0.94
MF
2,082
M60 X 4
60
4
57.402
55.67
2.165
1
-99
1.27
MF
2,081
M64 X 1.5
64
1.5
63.026
62.376
0.812
0.375
-99
0.43
MF
2,088
M64 X 2
64
2
62.701
61.835
1.083
0.5
-99
0.58
MF
2,087
M64 X 3
64
3
62.051
60.752
1.624
0.75
-99
0.88
MF
2,086
M64 X 4
64
4
61.402
59.67
2.165
1
-99
1.19
MF
2,085
M68 X 1.5
68
1.5
67.026
66.376
0.812
0.375
-99
0.41
MF
2,092
M68 X 2
68
2
66.701
65.835
1.083
0.5
-99
0.55
MF
2,091
M68 X 3
68
3
66.051
64.752
1.624
0.75
-99
0.83
MF
2,090
M68 X 4
68
4
65.402
63.67
2.165
1
-99
1.12
MF
2,089
M70 X 1.5
70
1.5
69.026
68.376
0.812
0.375
-99
0.4
MF
3,000
M70 X 2
70
2
68.701
67.835
1.083
0.5
-99
0.53
MF
3,001
M70 X 3
70
3
68.051
66.752
1.624
0.75
-99
0.8
MF
3,002
M70 X 4
70
4
67.402
65.67
2.165
1
-99
1.08
MF
3,003
M70 X 6
70
6
66.103
63.505
3.248
1.5
-99
1.65
MF
3,004
M72 X 1.5
72
1.5
71.026
70.376
0.812
0.375
-99
0.39
MF
3,005
M72 X 2
72
2
70.701
69.835
1.083
0.5
-99
0.52
MF
3,006
M72 X 3
72
3
70.051
68.752
1.624
0.75
-99
0.78
MF
3,007
M72 X 4
72
4
69.402
67.67
2.165
1
-99
1.05
MF
3,008
M72 X 6
72
6
68.103
65.505
3.248
1.5
-99
1.61
MF
3,009
M75 X 1.5
75
1.5
74.026
73.376
0.812
0.375
-99
0.37
MF
3,010
M75 X 2
75
2
73.701
72.835
1.083
0.5
-99
0.49
MF
3,011
M75 X 3
75
3
73.051
71.752
1.624
0.75
-99
0.75
MF
3,012
M75 X 4
75
4
72.402
70.67
2.165
1
-99
1.01
MF
3,013
M75 X 6
75
6
71.103
68.505
3.248
1.5
-99
1.54
MF
3,014
M76 X 1.5
76
1.5
75.026
74.376
0.812
0.375
-99
0.36
MF
3,015
M76 X 2
76
2
74.701
73.835
1.083
0.5
-99
0.49
MF
3,016
M76 X 3
76
3
74.051
72.752
1.624
0.75
-99
0.74
MF
3,017
M76 X 4
76
4
73.402
71.67
2.165
1
-99
0.99
MF
3,018
M76 X 6
76
6
72.103
69.505
3.248
1.5
-99
1.52
MF
3,019
M80 X 1.5
80
1.5
79.026
78.376
0.812
0.375
-99
0.35
MF
3,020
M80 X 2
80
2
78.701
77.835
1.083
0.5
-99
0.46
MF
3,021
M80 X 3
80
3
78.051
76.752
1.624
0.75
-99
0.7
MF
3,022
M80 X 4
80
4
77.402
75.67
2.165
1
-99
0.94
MF
3,023
M80 X 6
80
6
76.103
73.505
3.248
1.5
-99
1.44
MF
3,024
M85 X 2
85
2
83.701
82.835
1.083
0.5
-99
0.44
MF
3,025
M85 X 3
85
3
83.051
81.752
1.624
0.75
-99
0.66
MF
3,026
M85 X 4
85
4
82.402
80.67
2.165
1
-99
0.89
MF
3,027
M85 X 6
85
6
81.103
78.505
3.248
1.5
-99
1.35
MF
3,028
M90 X 2
90
2
88.701
87.835
1.083
0.5
-99
0.41
MF
3,029
M90 X 3
90
3
88.051
86.752
1.624
0.75
-99
0.62
MF
3,030
M90 X 4
90
4
87.402
85.67
2.165
1
-99
0.83
MF
3,031
M90 X 6
90
6
86.103
83.505
3.248
1.5
-99
1.27
MF
3,032
M95 X 2
95
2
93.701
92.835
1.083
0.5
-99
0.39
MF
3,033
M95 X 3
95
3
93.051
91.752
1.624
0.75
-99
0.59
MF
3,034
M95 X 4
95
4
92.402
90.67
2.165
1
-99
0.79
MF
3,035
M95 X 6
95
6
91.103
88.505
3.248
1.5
-99
1.2
MF
3,036
M100 X 2
100
2
98.701
97.835
1.083
0.5
-99
0.37
MF
3,037
M100 X 3
100
3
98.051
96.752
1.624
0.75
-99
0.56
MF
3,038
M100 X 4
100
4
97.402
95.67
2.165
1
-99
0.75
MF
3,039
M100 X 6
100
6
96.103
93.505
3.248
1.5
-99
1.14
MF
3,040
M105 X 2
105
2
103.701
102.835
1.083
0.5
-99
0.35
MF
3,041
M105 X 3
105
3
103.051
101.752
1.624
0.75
-99
0.53
MF
3,042
M105 X 4
105
4
102.402
100.67
2.165
1
-99
0.71
MF
3,043
M105 X 6
105
6
101.103
98.505
3.248
1.5
-99
1.08
MF
3,044
M110 X 2
110
2
108.701
107.835
1.083
0.5
-99
0.34
MF
3,045
M110 X 3
110
3
108.051
106.752
1.624
0.75
-99
0.51
MF
3,046
M110 X 4
110
4
107.402
105.67
2.165
1
-99
0.68
MF
3,047
M110 X 6
110
6
106.103
103.505
3.248
1.5
-99
1.03
MF
3,048
M115 X 2
115
2
113.701
112.835
1.083
0.5
-99
0.32
MF
3,049
M115 X 3
115
3
113.051
111.752
1.624
0.75
-99
0.48
MF
3,050
M115 X 4
115
4
112.402
110.67
2.165
1
-99
0.65
MF
3,051
M115 X 6
115
6
111.103
108.505
3.248
1.5
-99
0.98
MF
3,052
M120 X 2
120
2
118.701
117.835
1.083
0.5
-99
0.31
MF
3,053
M120 X 3
120
3
118.051
116.752
1.624
0.75
-99
0.46
MF
3,054
M120 X 4
120
4
117.402
115.67
2.165
1
-99
0.62
MF
3,055
M120 X 6
120
6
116.103
113.505
3.248
1.5
-99
0.94
MF
3,056
M125 X 2
125
2
123.701
122.835
1.083
0.5
-99
0.29
MF
3,057
M125 X 3
125
3
123.051
121.752
1.624
0.75
-99
0.44
MF
3,058
M125 X 4
125
4
122.402
120.67
2.165
1
-99
0.6
MF
3,059
M125 X 6
125
6
121.103
118.505
3.248
1.5
-99
0.9
MF
3,060
M125 X 8
125
8
119.804
116.34
4.33
2
-99
1.22
MF
3,061
M130 X 2
130
2
128.701
127.835
1.083
0.5
-99
0.28
MF
3,062
M130 X 3
130
3
128.051
126.752
1.624
0.75
-99
0.43
MF
3,063
M130 X 4
130
4
127.402
125.67
2.165
1
-99
0.57
MF
3,064
M130 X 6
130
6
126.103
123.505
3.248
1.5
-99
0.87
MF
3,065
M130 X 8
130
8
124.804
121.34
4.33
2
-99
1.17
MF
3,066
M135 X 2
135
2
133.701
132.835
1.083
0.5
-99
0.27
MF
3,067
M135 X 3
135
3
133.051
131.752
1.624
0.75
-99
0.41
MF
3,068
M135 X 4
135
4
132.402
130.67
2.165
1
-99
0.55
MF
3,069
M135 X 6
135
6
131.103
128.505
3.248
1.5
-99
0.83
MF
3,070
M140 X 2
140
2
138.701
137.835
1.083
0.5
-99
0.26
MF
3,071
M140 X 3
140
3
138.051
136.752
1.624
0.75
-99
0.4
MF
3,072
M140 X 4
140
4
137.402
135.67
2.165
1
-99
0.53
MF
3,073
M140 X 6
140
6
136.103
133.505
3.248
1.5
-99
0.8
MF
3,074
M140 X 8
140
8
134.804
131.34
4.33
2
-99
1.08
MF
3,075
M145 X 2
145
2
143.701
142.835
1.083
0.5
-99
0.25
MF
3,076
M145 X 3
145
3
143.051
141.752
1.624
0.75
-99
0.38
MF
3,077
M145 X 4
145
4
142.402
140.67
2.165
1
-99
0.51
MF
3,078
M145 X 6
145
6
141.103
138.505
3.248
1.5
-99
0.78
MF
3,079
M150 X 2
150
2
148.701
147.835
1.083
0.5
-99
0.25
MF
3,080
M150 X 3
150
3
148.051
146.752
1.624
0.75
-99
0.37
MF
3,081
M150 X 4
150
4
147.402
145.67
2.165
1
-99
0.49
MF
3,082
M150 X 6
150
6
146.103
143.505
3.248
1.5
-99
0.75
MF
3,083
M150 X 8
150
8
144.804
141.34
4.33
2
-99
1.01
MF
3,084
M155 X 2
155
2
153.701
152.835
1.083
0.5
-99
0.24
MF
3,085
M155 X 3
155
3
153.051
151.752
1.624
0.75
-99
0.36
MF
3,086
M155 X 4
155
4
152.402
150.67
2.165
1
-99
0.48
MF
3,087
M155 X 6
155
6
151.103
148.505
3.248
1.5
-99
0.72
MF
3,088
M160 X 3
160
3
158.051
156.752
1.624
0.75
-99
0.35
MF
3,089
M160 X 4
160
4
157.402
155.67
2.165
1
-99
0.46
MF
3,090
M160 X 6
160
6
156.103
153.505
3.248
1.5
-99
0.7
MF
3,091
M160 X 8
160
8
154.804
151.34
4.33
2
-99
0.94
MF
3,092
M165 X 3
165
3
163.051
161.752
1.624
0.75
-99
0.34
MF
3,093
M165 X 4
165
4
162.402
160.67
2.165
1
-99
0.45
MF
3,094
M165 X 6
165
6
161.103
158.505
3.248
1.5
-99
0.68
MF
3,095
M170 X 3
170
3
168.051
166.752
1.624
0.75
-99
0.33
MF
3,096
M170 X 4
170
4
167.402
165.67
2.165
1
-99
0.44
MF
3,097
M170 X 6
170
6
166.103
163.505
3.248
1.5
-99
0.66
MF
3,098
M170 X 8
170
8
164.804
161.34
4.33
2
-99
0.89
MF
3,099
M175 X 3
175
3
173.051
171.752
1.624
0.75
-99
0.32
MF
3,100
M175 X 4
175
4
172.402
170.67
2.165
1
-99
0.42
MF
3,101
M175 X 6
175
6
171.103
168.505
3.248
1.5
-99
0.64
MF
3,102
M180 X 3
180
3
178.051
176.752
1.624
0.75
-99
0.31
MF
3,103
M180 X 4
180
4
177.402
175.67
2.165
1
-99
0.41
MF
3,104
M180 X 6
180
6
176.103
173.505
3.248
1.5
-99
0.62
MF
3,105
M180 X 8
180
8
174.804
171.34
4.33
2
-99
0.83
MF
3,106
M185 X 3
185
3
183.051
181.752
1.624
0.75
-99
0.3
MF
3,107
M185 X 4
185
4
182.402
180.67
2.165
1
-99
0.4
MF
3,108
M185 X 6
185
6
181.103
178.505
3.248
1.5
-99
0.6
MF
3,109
M190 X 3
190
3
188.051
186.752
1.624
0.75
-99
0.29
MF
3,110
M190 X 4
190
4
187.402
185.67
2.165
1
-99
0.39
MF
3,111
M190 X 6
190
6
186.103
183.505
3.248
1.5
-99
0.59
MF
3,112
M190 X 8
190
8
184.804
181.34
4.33
2
-99
0.79
MF
3,113
M195 X 3
195
3
193.051
191.752
1.624
0.75
-99
0.28
MF
3,114
M195 X 4
195
4
192.402
190.67
2.165
1
-99
0.38
MF
3,115
M195 X 6
195
6
191.103
188.505
3.248
1.5
-99
0.57
MF
3,116
M200 X 3
200
3
198.051
196.752
1.624
0.75
-99
0.28
MF
3,117
M200 X 4
200
4
197.402
195.67
2.165
1
-99
0.37
MF
3,118
M200 X 6
200
6
196.103
193.505
3.248
1.5
-99
0.56
MF
3,119
M200 X 8
200
8
194.804
191.34
4.33
2
-99
0.75
MF
3,120
M205 X 3
205
3
203.051
201.752
1.624
0.75
-99
0.27
MF
3,121
M205 X 4
205
4
202.402
200.67
2.165
1
-99
0.36
MF
3,122
M205 X 6
205
6
201.103
198.505
3.248
1.5
-99
0.54
MF
3,123
M210 X 3
210
3
208.051
206.752
1.624
0.75
-99
0.26
MF
2,095
M210 X 4
210
4
207.402
205.67
2.165
1
-99
0.35
MF
2,094
M210 X 6
210
6
206.103
203.505
3.248
1.5
-99
0.53
MF
2,093
M210 X 8
210
8
204.804
201.34
4.33
2
-99
0.71
MF
1,087
M220 X 3
220
3
218.051
216.752
1.624
0.75
-99
0.25
MF
2,098
M220 X 4
220
4
217.402
215.67
2.165
1
-99
0.34
MF
2,097
M220 X 6
220
6
216.103
213.505
3.248
1.5
-99
0.51
MF
2,096
M220 X 8
220
8
214.804
211.34
4.33
2
-99
0.68
MF
1,089
M230 X 3
230
3
228.051
226.752
1.624
0.75
-99
0.24
MF
2,101
M230 X 4
230
4
227.402
225.67
2.165
1
-99
0.32
MF
2,100
M230 X 6
230
6
226.103
223.505
3.248
1.5
-99
0.48
MF
2,099
M230 X 8
230
8
224.804
221.34
4.33
2
-99
0.65
MF
1,091
M240 X 3
240
3
238.051
236.752
1.624
0.75
-99
0.23
MF
2,104
M240 X 4
240
4
237.402
235.67
2.165
1
-99
0.31
MF
2,103
M240 X 6
240
6
236.103
233.505
3.248
1.5
-99
0.46
MF
2,102
M240 X 8
240
8
234.804
231.34
4.33
2
-99
0.62
MF
1,093
M250 X 3
250
3
248.051
246.752
1.624
0.75
-99
0.22
MF
2,107
M250 X 4
250
4
247.402
245.67
2.165
1
-99
0.29
MF
2,106
M250 X 6
250
6
246.103
243.505
3.248
1.5
-99
0.44
MF
2,105
M250 X 8
250
8
244.804
241.34
4.33
2
-99
0.6
MF
1,095
M260 X 4
260
4
257.402
255.67
2.165
1
-99
0.28
MF
2,109
M260 X 6
260
6
256.103
253.505
3.248
1.5
-99
0.43
MF
2,108
M260 X 8
260
8
254.804
251.34
4.33
2
-99
0.57
MF
1,097
M270 X 4
270
4
267.402
265.67
2.165
1
-99
0.27
MF
2,111
M270 X 6
270
6
266.103
263.505
3.248
1.5
-99
0.41
MF
2,110
M270 X 8
270
8
264.804
261.34
4.33
2
-99
0.55
MF
1,099
M280 X 4
280
4
277.402
275.67
2.165
1
-99
0.26
MF
2,113
M280 X 6
280
6
276.103
273.505
3.248
1.5
-99
0.4
MF
2,112
M280 X 8
280
8
274.804
271.34
4.33
2
-99
0.53
MF
1,101
M290 X 4
290
4
287.402
285.67
2.165
1
-99
0.25
MF
2,115
M290 X 6
290
6
286.103
283.505
3.248
1.5
-99
0.38
MF
2,114
M290 X 8
290
8
284.804
281.34
4.33
2
-99
0.51
MF
1,103
M300 X 4
300
4
297.402
295.67
2.165
1
-99
0.25
MF
2,117
M300 X 6
300
6
296.103
293.505
3.248
1.5
-99
0.37
MF
2,116
M300 X 8
300
8
294.804
291.34
4.33
2
-99
0.49
MF
1,105
limits of Thread Dimensions
To manufacture or measure a thread, one has to know the maximum and minimum permissible values of the basic dimensions . These values are calculated according to the thread class (See below ). To understand classes, you first need to understand the terms Allowance (Sometimes referred to as deviation) and Tolerances . The below data and explanations are based on ISO 965-1
Definition of terms:
Allowance (Deviation): The minimum permissible distance between the basic and actual profile.
Tolerance: The width of the tolerance field of a diameter on the actual thread profile. (Pitch , Major & Minor diameters)
Metric Thread Classes
The class is written after the pitch . It is preceded by a “– ” and consists of two or four characters. For example, for “M8 X 0.75 – 5g6g “, the class is 5g6g . The class defines the Deviation (allowance ) and tolerance of the thread.
Small letters represent external threads, while capital letters represent internal threads.
Two charters long class mean that the class is valid for both the pitch and major/minor diameters .
Four long charters mean a separate class for the pitch diameter (The first two characters) and major/minor diameters (The last two characters).
If the class is omitted , the default class is used.
Metric Thread Class Syntax:
Threading Class Allowed Values:
External Threads:
D: e, f, g, h
T (Major Diameter ): 4, 6, 8
T (Pitch Diameter): 3, 4, 5, 6, 7, 8, 9
Symbols: es, Td , Td2
Internal Threads:
D: G, H
T (Minor Diameter ): 4, 5, 6, 7, 8
T (Pitch Diameter): 4, 5, 6, 7, 8
Symbols: EL, TD1 , TD2
Class selection
The engineer can select any class for the male and female threads to achieve his design goals. However, ISO 965-1 recommends limiting the choice according to a chart of “Recommended Classes” .
The choice of the recommended class is made according to two parameters:
Tolerance Quality:
F – Fine: for precision threads, when a minimal variation of fit is needed.
M – Medium: for general use.
C – Coarse: for cases where manufacturing difficulties can arise, for example, when threading hot-rolled bars and long blind holes.
Length of Engagement :
N – Normal: Defined for each thread in the below table .
S – Short: Shorter than the “Normal” length.
L – Long: Longer than the “Normal length”.
Select “N” When the length of engagement is unknown.
Type your thread description in the Search Box.
1,000
M1
0.6 -1.7
0.024 -0.067
2,000
M1 X 0.2
0.5 -1.4
0.020 -0.055
1,001
M1.1
0.6 -1.7
0.024 -0.067
2,001
M1.1 X 0.2
0.5 -1.4
0.020 -0.055
1,002
M1.2
0.6 -1.7
0.024 -0.067
2,002
M1.2 X 0.2
0.5 -1.4
0.020 -0.055
1,003
M1.4
0.7 -2.0
0.028 -0.079
2,003
M1.4 X 0.2
0.5 -1.4
0.020 -0.055
1,004
M1.6
0.8 -2.6
0.031 -0.102
2,004
M1.6 X 0.2
0.5 -1.5
0.020 -0.059
1,005
M1.8
0.8 -2.6
0.031 -0.102
2,005
M1.8 X 0.2
0.5 -1.5
0.020 -0.059
1,019
M10
5.0 -15.0
0.197 -0.591
2,022
M10 X 0.75
2.4 -7.1
0.094 -0.280
2,021
M10 X 1
3.0 -9.0
0.118 -0.354
2,020
M10 X 1.25
4.0 -12.0
0.157 -0.472
3,037
M100 X 2
12.0 -36.0
0.472 -1.417
3,038
M100 X 3
18.0 -53.0
0.709 -2.087
3,039
M100 X 4
24.0 -71.0
0.945 -2.795
3,040
M100 X 6
36.0 -106.0
1.417 -4.173
3,041
M105 X 2
12.0 -36.0
0.472 -1.417
3,042
M105 X 3
18.0 -53.0
0.709 -2.087
3,043
M105 X 4
24.0 -71.0
0.945 -2.795
3,044
M105 X 6
36.0 -106.0
1.417 -4.173
1,020
M11
5.0 -15.0
0.197 -0.591
2,024
M11 X 0.75
2.4 -7.1
0.094 -0.280
2,023
M11 X 1
3.0 -9.0
0.118 -0.354
3,045
M110 X 2
12.0 -36.0
0.472 -1.417
3,046
M110 X 3
18.0 -53.0
0.709 -2.087
3,047
M110 X 4
24.0 -71.0
0.945 -2.795
3,048
M110 X 6
36.0 -106.0
1.417 -4.173
3,049
M115 X 2
12.0 -36.0
0.472 -1.417
3,050
M115 X 3
18.0 -53.0
0.709 -2.087
3,051
M115 X 4
24.0 -71.0
0.945 -2.795
3,052
M115 X 6
36.0 -106.0
1.417 -4.173
1,021
M12
6.0 -18.0
0.236 -0.709
2,027
M12 X 1
3.8 -11.0
0.150 -0.433
2,026
M12 X 1.25
4.5 -13.0
0.177 -0.512
2,025
M12 X 1.5
5.6 -16.0
0.220 -0.630
3,053
M120 X 2
12.0 -36.0
0.472 -1.417
3,054
M120 X 3
18.0 -53.0
0.709 -2.087
3,055
M120 X 4
24.0 -71.0
0.945 -2.795
3,056
M120 X 6
36.0 -106.0
1.417 -4.173
3,057
M125 X 2
12.0 -36.0
0.472 -1.417
3,058
M125 X 3
18.0 -53.0
0.709 -2.087
3,059
M125 X 4
24.0 -71.0
0.945 -2.795
3,060
M125 X 6
36.0 -106.0
1.417 -4.173
3,061
M125 X 8
45.0 -132.0
1.772 -5.197
3,062
M130 X 2
12.0 -36.0
0.472 -1.417
3,063
M130 X 3
18.0 -53.0
0.709 -2.087
3,064
M130 X 4
24.0 -71.0
0.945 -2.795
3,065
M130 X 6
36.0 -106.0
1.417 -4.173
3,066
M130 X 8
45.0 -132.0
1.772 -5.197
3,067
M135 X 2
12.0 -36.0
0.472 -1.417
3,068
M135 X 3
18.0 -53.0
0.709 -2.087
3,069
M135 X 4
24.0 -71.0
0.945 -2.795
3,070
M135 X 6
36.0 -106.0
1.417 -4.173
1,022
M14
8.0 -24.0
0.315 -0.945
2,030
M14 X 1
3.8 -11.0
0.150 -0.433
2,029
M14 X 1.25
4.5 -13.0
0.177 -0.512
2,028
M14 X 1.5
5.6 -16.0
0.220 -0.630
3,071
M140 X 2
12.0 -36.0
0.472 -1.417
3,072
M140 X 3
18.0 -53.0
0.709 -2.087
3,073
M140 X 4
24.0 -71.0
0.945 -2.795
3,074
M140 X 6
36.0 -106.0
1.417 -4.173
3,075
M140 X 8
45.0 -132.0
1.772 -5.197
3,076
M145 X 2
12.0 -36.0
0.472 -1.417
3,077
M145 X 3
18.0 -53.0
0.709 -2.087
3,078
M145 X 4
24.0 -71.0
0.945 -2.795
3,079
M145 X 6
36.0 -106.0
1.417 -4.173
3,080
M150 X 2
12.0 -36.0
0.472 -1.417
3,081
M150 X 3
18.0 -53.0
0.709 -2.087
3,082
M150 X 4
24.0 -71.0
0.945 -2.795
3,083
M150 X 6
36.0 -106.0
1.417 -4.173
3,084
M150 X 8
45.0 -132.0
1.772 -5.197
3,085
M155 X 2
12.0 -36.0
0.472 -1.417
3,086
M155 X 3
18.0 -53.0
0.709 -2.087
3,087
M155 X 4
24.0 -71.0
0.945 -2.795
3,088
M155 X 6
36.0 -106.0
1.417 -4.173
1,024
M16
8.0 -24.0
0.315 -0.945
2,032
M16 X 1
3.8 -11.0
0.150 -0.433
2,031
M16 X 1.5
5.6 -16.0
0.220 -0.630
3,089
M160 X 3
18.0 -53.0
0.709 -2.087
3,090
M160 X 4
24.0 -71.0
0.945 -2.795
3,091
M160 X 6
36.0 -106.0
1.417 -4.173
3,092
M160 X 8
45.0 -132.0
1.772 -5.197
3,093
M165 X 3
18.0 -53.0
0.709 -2.087
3,094
M165 X 4
24.0 -71.0
0.945 -2.795
3,095
M165 X 6
36.0 -106.0
1.417 -4.173
3,096
M170 X 3
18.0 -53.0
0.709 -2.087
3,097
M170 X 4
24.0 -71.0
0.945 -2.795
3,098
M170 X 6
36.0 -106.0
1.417 -4.173
3,099
M170 X 8
45.0 -132.0
1.772 -5.197
3,100
M175 X 3
18.0 -53.0
0.709 -2.087
3,101
M175 X 4
24.0 -71.0
0.945 -2.795
3,102
M175 X 6
36.0 -106.0
1.417 -4.173
1,026
M18
10.0 -30.0
0.394 -1.181
2,035
M18 X 1
3.8 -11.0
0.150 -0.433
2,034
M18 X 1.5
5.6 -16.0
0.220 -0.630
2,033
M18 X 2
8.0 -24.0
0.315 -0.945
3,103
M180 X 3
18.0 -53.0
0.709 -2.087
3,104
M180 X 4
24.0 -71.0
0.945 -2.795
3,105
M180 X 6
36.0 -106.0
1.417 -4.173
3,106
M180 X 8
45.0 -132.0
1.772 -5.197
3,107
M185 X 3
20.0 -60.0
0.787 -2.362
3,108
M185 X 4
26.0 -80.0
1.024 -3.150
3,109
M185 X 6
40.0 -118.0
1.575 -4.646
3,110
M190 X 3
20.0 -60.0
0.787 -2.362
3,111
M190 X 4
26.0 -80.0
1.024 -3.150
3,112
M190 X 6
40.0 -118.0
1.575 -4.646
3,113
M190 X 8
50.0 -150.0
1.969 -5.906
3,114
M195 X 3
20.0 -60.0
0.787 -2.362
3,115
M195 X 4
26.0 -80.0
1.024 -3.150
3,116
M195 X 6
40.0 -118.0
1.575 -4.646
1,006
M2
1.0 -3.0
0.039 -0.118
2,006
M2 X 0.25
0.6 -1.9
0.024 -0.075
1,007
M2.2
1.3 -3.8
0.051 -0.150
2,007
M2.2 X 0.25
0.6 -1.9
0.024 -0.075
1,008
M2.5
1.3 -3.8
0.051 -0.150
2,008
M2.5 X 0.35
0.8 -2.6
0.031 -0.102
1,027
M20
10.0 -30.0
0.394 -1.181
2,038
M20 X 1
3.8 -11.0
0.150 -0.433
2,037
M20 X 1.5
5.6 -16.0
0.220 -0.630
2,036
M20 X 2
8.0 -24.0
0.315 -0.945
3,117
M200 X 3
20.0 -60.0
0.787 -2.362
3,118
M200 X 4
26.0 -80.0
1.024 -3.150
3,119
M200 X 6
40.0 -118.0
1.575 -4.646
3,120
M200 X 8
50.0 -150.0
1.969 -5.906
3,121
M205 X 3
20.0 -60.0
0.787 -2.362
3,122
M205 X 4
26.0 -80.0
1.024 -3.150
3,123
M205 X 6
40.0 -118.0
1.575 -4.646
2,095
M210 X 3
20.0 -60.0
0.787 -2.362
2,094
M210 X 4
26.0 -80.0
1.024 -3.150
2,093
M210 X 6
40.0 -118.0
1.575 -4.646
1,087
M210 X 8
50.0 -150.0
1.969 -5.906
1,028
M22
10.0 -30.0
0.394 -1.181
2,041
M22 X 1
3.8 -11.0
0.150 -0.433
2,040
M22 X 1.5
5.6 -16.0
0.220 -0.630
2,039
M22 X 2
8.0 -24.0
0.315 -0.945
2,098
M220 X 3
20.0 -60.0
0.787 -2.362
2,097
M220 X 4
26.0 -80.0
1.024 -3.150
2,096
M220 X 6
40.0 -118.0
1.575 -4.646
1,089
M220 X 8
50.0 -150.0
1.969 -5.906
2,101
M230 X 3
20.0 -60.0
0.787 -2.362
2,100
M230 X 4
26.0 -80.0
1.024 -3.150
2,099
M230 X 6
40.0 -118.0
1.575 -4.646
1,091
M230 X 8
50.0 -150.0
1.969 -5.906
2,044
M24 X 1
4.0 -12.0
0.157 -0.472
2,043
M24 X 1.5
6.3 -19.0
0.248 -0.748
2,104
M240 X 3
20.0 -60.0
0.787 -2.362
2,103
M240 X 4
26.0 -80.0
1.024 -3.150
2,102
M240 X 6
40.0 -118.0
1.575 -4.646
1,093
M240 X 8
50.0 -150.0
1.969 -5.906
2,107
M250 X 3
20.0 -60.0
0.787 -2.362
2,106
M250 X 4
26.0 -80.0
1.024 -3.150
2,105
M250 X 6
40.0 -118.0
1.575 -4.646
1,095
M250 X 8
50.0 -150.0
1.969 -5.906
2,109
M260 X 4
26.0 -80.0
1.024 -3.150
2,108
M260 X 6
40.0 -118.0
1.575 -4.646
1,097
M260 X 8
50.0 -150.0
1.969 -5.906
1,032
M27
12.0 -36.0
0.472 -1.417
2,047
M27 X 1
4.0 -12.0
0.157 -0.472
2,046
M27 X 1.5
6.3 -19.0
0.248 -0.748
2,045
M27 X 2
8.5 -25.0
0.335 -0.984
2,111
M270 X 4
26.0 -80.0
1.024 -3.150
2,110
M270 X 6
40.0 -118.0
1.575 -4.646
1,099
M270 X 8
50.0 -150.0
1.969 -5.906
2,113
M280 X 4
26.0 -80.0
1.024 -3.150
2,112
M280 X 6
40.0 -118.0
1.575 -4.646
1,101
M280 X 8
50.0 -150.0
1.969 -5.906
2,115
M290 X 4
26.0 -80.0
1.024 -3.150
2,114
M290 X 6
40.0 -118.0
1.575 -4.646
1,103
M290 X 8
50.0 -150.0
1.969 -5.906
1,009
M3
1.5 -4.5
0.059 -0.177
2,009
M3 X 0.35
1.0 -3.0
0.039 -0.118
1,010
M3.5
1.7 -5.0
0.067 -0.197
2,010
M3.5 X 0.35
1.0 -3.0
0.039 -0.118
1,034
M30
15.0 -45.0
0.591 -1.772
2,051
M30 X 1
4.0 -12.0
0.157 -0.472
2,050
M30 X 1.5
6.3 -19.0
0.248 -0.748
2,049
M30 X 2
8.5 -25.0
0.335 -0.984
2,048
M30 X 3
12.0 -36.0
0.472 -1.417
2,117
M300 X 4
26.0 -80.0
1.024 -3.150
2,116
M300 X 6
40.0 -118.0
1.575 -4.646
1,105
M300 X 8
50.0 -150.0
1.969 -5.906
1,036
M33
15.0 -45.0
0.591 -1.772
2,054
M33 X 1.5
6.3 -19.0
0.248 -0.748
2,053
M33 X 2
8.5 -25.0
0.335 -0.984
2,052
M33 X 3
12.0 -36.0
0.472 -1.417
1,038
M36
18.0 -53.0
0.709 -2.087
2,057
M36 X 1.5
6.3 -19.0
0.248 -0.748
2,056
M36 X 2
8.5 -25.0
0.335 -0.984
2,055
M36 X 3
12.0 -36.0
0.472 -1.417
1,040
M39
18.0 -53.0
0.709 -2.087
2,060
M39 X 1.5
6.3 -19.0
0.248 -0.748
2,059
M39 X 2
8.5 -25.0
0.335 -0.984
2,058
M39 X 3
12.0 -36.0
0.472 -1.417
1,011
M4
2.0 -6.0
0.079 -0.236
2,011
M4 X 0.5
1.5 -4.5
0.059 -0.177
1,012
M4.5
2.2 -6.7
0.087 -0.264
2,012
M4.5 X 0.5
1.5 -4.5
0.059 -0.177
1,042
M42
21.0 -63.0
0.827 -2.480
2,064
M42 X 1.5
6.3 -19.0
0.248 -0.748
2,063
M42 X 2
8.5 -25.0
0.335 -0.984
2,062
M42 X 3
12.0 -36.0
0.472 -1.417
2,061
M42 X 4
18.0 -53.0
0.709 -2.087
1,043
M45
21.0 -63.0
0.827 -2.480
2,068
M45 X 1.5
6.3 -19.0
0.248 -0.748
2,067
M45 X 2
8.5 -25.0
0.335 -0.984
2,066
M45 X 3
12.0 -36.0
0.472 -1.417
2,065
M45 X 4
18.0 -53.0
0.709 -2.087
1,044
M48
24.0 -71.0
0.945 -2.795
2,072
M48 X 1.5
7.5 -22.0
0.295 -0.866
2,071
M48 X 2
9.5 -28.0
0.374 -1.102
2,070
M48 X 3
12.0 -36.0
0.472 -1.417
2,070
M48 X 3
15.0 -45.0
0.591 -1.772
2,069
M48 X 4
18.0 -53.0
0.709 -2.087
2,069
M48 X 4
19.0 -56.0
0.748 -2.205
1,013
M5
2.5 -7.5
0.098 -0.295
2,013
M5 X 0.5
1.5 -4.5
0.059 -0.177
1,046
M52
24.0 -71.0
0.945 -2.795
2,076
M52 X 1.5
7.5 -22.0
0.295 -0.866
2,075
M52 X 2
9.5 -28.0
0.374 -1.102
2,074
M52 X 3
15.0 -45.0
0.591 -1.772
2,073
M52 X 4
19.0 -56.0
0.748 -2.205
1,048
M56
28.0 -85.0
1.102 -3.346
2,080
M56 X 1.5
7.5 -22.0
0.295 -0.866
2,079
M56 X 2
9.5 -28.0
0.374 -1.102
2,078
M56 X 3
15.0 -45.0
0.591 -1.772
2,077
M56 X 4
19.0 -56.0
0.748 -2.205
1,015
M6
3.0 -9.0
0.118 -0.354
2,014
M6 X 0.75
2.4 -7.1
0.094 -0.280
1,050
M60
28.0 -85.0
1.102 -3.346
2,084
M60 X 1.5
7.5 -22.0
0.295 -0.866
2,083
M60 X 2
9.5 -28.0
0.374 -1.102
2,082
M60 X 3
15.0 -45.0
0.591 -1.772
2,081
M60 X 4
19.0 -56.0
0.748 -2.205
1,052
M64
32.0 -95.0
1.260 -3.740
2,088
M64 X 1.5
7.5 -22.0
0.295 -0.866
2,087
M64 X 2
9.5 -28.0
0.374 -1.102
2,086
M64 X 3
15.0 -45.0
0.591 -1.772
2,085
M64 X 4
19.0 -56.0
0.748 -2.205
1,054
M68
32.0 -95.0
1.260 -3.740
2,092
M68 X 1.5
7.5 -22.0
0.295 -0.866
2,091
M68 X 2
9.5 -28.0
0.374 -1.102
2,090
M68 X 3
15.0 -45.0
0.591 -1.772
2,089
M68 X 4
19.0 -56.0
0.748 -2.205
1,016
M7
3.0 -9.0
0.118 -0.354
2,015
M7 X 0.75
2.4 -7.1
0.094 -0.280
3,000
M70 X 1.5
7.5 -22.0
0.295 -0.866
3,001
M70 X 2
9.5 -28.0
0.374 -1.102
3,002
M70 X 3
15.0 -45.0
0.591 -1.772
3,003
M70 X 4
19.0 -56.0
0.748 -2.205
3,004
M70 X 6
32.0 -95.0
1.260 -3.740
3,005
M72 X 1.5
7.5 -22.0
0.295 -0.866
3,006
M72 X 2
9.5 -28.0
0.374 -1.102
3,007
M72 X 3
15.0 -45.0
0.591 -1.772
3,008
M72 X 4
19.0 -56.0
0.748 -2.205
3,009
M72 X 6
32.0 -95.0
1.260 -3.740
3,010
M75 X 1.5
7.5 -22.0
0.295 -0.866
3,011
M75 X 2
9.5 -28.0
0.374 -1.102
3,012
M75 X 3
15.0 -45.0
0.591 -1.772
3,013
M75 X 4
19.0 -56.0
0.748 -2.205
3,014
M75 X 6
32.0 -95.0
1.260 -3.740
3,015
M76 X 1.5
7.5 -22.0
0.295 -0.866
3,016
M76 X 2
9.5 -28.0
0.374 -1.102
3,017
M76 X 3
15.0 -45.0
0.591 -1.772
3,018
M76 X 4
19.0 -56.0
0.748 -2.205
3,019
M76 X 6
32.0 -95.0
1.260 -3.740
1,017
M8
4.0 -12.0
0.157 -0.472
2,017
M8 X 0.75
2.4 -7.1
0.094 -0.280
2,016
M8 X 1
3.0 -9.0
0.118 -0.354
3,020
M80 X 1.5
7.5 -22.0
0.295 -0.866
3,021
M80 X 2
9.5 -28.0
0.374 -1.102
3,022
M80 X 3
15.0 -45.0
0.591 -1.772
3,023
M80 X 4
19.0 -56.0
0.748 -2.205
3,024
M80 X 6
32.0 -95.0
1.260 -3.740
3,025
M85 X 2
9.5 -28.0
0.374 -1.102
3,026
M85 X 3
15.0 -45.0
0.591 -1.772
3,027
M85 X 4
19.0 -56.0
0.748 -2.205
3,028
M85 X 6
32.0 -95.0
1.260 -3.740
1,018
M9
4.0 -12.0
0.157 -0.472
2,019
M9 X 0.75
2.4 -7.1
0.094 -0.280
2,018
M9 X 1
3.0 -9.0
0.118 -0.354
3,029
M90 X 2
9.5 -28.0
0.374 -1.102
3,030
M90 X 3
15.0 -45.0
0.591 -1.772
3,031
M90 X 4
19.0 -56.0
0.748 -2.205
3,032
M90 X 6
32.0 -95.0
1.260 -3.740
3,033
M95 X 2
12.0 -36.0
0.472 -1.417
3,034
M95 X 3
18.0 -53.0
0.709 -2.087
3,035
M95 X 4
24.0 -71.0
0.945 -2.795
3,036
M95 X 6
36.0 -106.0
1.417 -4.173
Blue Background – Default ClassesGreen Background – First Choice Classes.Yello Background – Second Choice Classes.
Metric Thread Allowance (Deviations)
The allowance EL for internal threads and es for external threads is derived from the class. The approximate allowance can be calculated according to the below formulas:
ELH = esh = 0
ELG = esg ≈15 + 11 * P
ese ≈50 + 11 * P
esf ≈30 + 11 * P
P is the pitch expressed in microns
The result es/EL is in microns.
Unfortunately the above formulas are approximations only. The formal values must be obtained from ISO 965-1 or from the below chart
Type your thread description in the Search Box.
Values are in Microns .
For millimeters divide by 1,000. For Inches divide by 25,4000.
2,000
1.00
M1 X 0.2
-99
-99
17
0
1,000
1.00
M1
-99
-99
18
0
2,001
1.10
M1.1 X 0.2
-99
-99
17
0
1,001
1.10
M1.1
-99
-99
18
0
2,002
1.20
M1.2 X 0.2
-99
-99
17
0
1,002
1.20
M1.2
-99
-99
18
0
2,003
1.40
M1.4 X 0.2
-99
-99
17
0
1,003
1.40
M1.4
-99
-99
18
0
2,004
1.60
M1.6 X 0.2
-99
-99
17
0
1,004
1.60
M1.6
-99
34
19
0
2,005
1.80
M1.8 X 0.2
-99
-99
17
0
1,005
1.80
M1.8
-99
34
19
0
2,006
2.00
M2 X 0.25
-99
-99
18
0
1,006
2.00
M2
-99
34
19
0
2,007
2.20
M2.2 X 0.25
-99
-99
18
0
1,007
2.20
M2.2
-99
35
20
0
2,008
2.50
M2.5 X 0.35
-99
34
19
0
1,008
2.50
M2.5
-99
35
20
0
2,009
3.00
M3 X 0.35
-99
34
19
0
1,009
3.00
M3
50
36
20
0
2,010
3.50
M3.5 X 0.35
-99
34
19
0
1,010
3.50
M3.5
53
36
21
0
2,011
4.00
M4 X 0.5
50
36
20
0
1,011
4.00
M4
56
38
22
0
2,012
4.50
M4.5 X 0.5
50
36
20
0
1,012
4.50
M4.5
56
38
22
0
2,013
5.00
M5 X 0.5
50
36
20
0
1,013
5.00
M5
60
38
24
0
2,014
6.00
M6 X 0.75
56
38
22
0
1,015
6.00
M6
60
40
26
0
2,015
7.00
M7 X 0.75
56
38
22
0
1,016
7.00
M7
60
40
26
0
2,017
8.00
M8 X 0.75
56
38
22
0
2,016
8.00
M8 X 1