Dimensions mm · values as the standard states them Size P d1 h d2 M5 0.8 5.5 – 5.8
2
1.7 – 2.3
16.9 – 18
M6 1 6.6 – 6.96
2
1.7 – 2.3
20.7 – 22
M8 1.25 9 – 9.36
3
2.4 – 3.6
26.7 – 28
M10 1.5 11 – 11.43
3
2.4 – 3.6
32.4 – 34
M12 1.75 13.5 – 13.93
4
3.4 – 4.6
42.4 – 44
M14 2 15.5 – 15.93
4
3.4 – 4.6
48.1 – 50
M16 2 17.5 – 18.2
5
4 – 6
54.1 – 56
M18 2.5 20 – 20.84
5
4 – 6
58.1 – 60
M20 2.5 22 – 22.84
6
5 – 7
70.1 – 72
M22 2.5 24 – 24.84
6
5 – 7
78.1 – 80
M24 3 26 – 26.84
6
5 – 7
82.8 – 85
M27 3 30 – 30.84
6
5 – 7
95.8 – 98
M30 3.5 33 – 34
6
5 – 7
102.8 – 105
M33 3.5 36 – 37
8
6.8 – 9.2
112.8 – 115
M36 4 39 – 40
8
6.8 – 9.2
122.5 – 125
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.
Size sheet · ISO 7094
M5
d1 inside diameter 5.5 – 5.8
h thickness 2
d2 outside diameter 16.9 – 18 Thread · ISO 261/262
Pitch P 0.8
d2 4.48
d3 4.019
Tap drill 4.2
Stress area As 14.18 mm² Size sheet · ISO 7094
M6
d1 inside diameter 6.6 – 6.96
h thickness 2
d2 outside diameter 20.7 – 22 Thread · ISO 261/262
Pitch P 1
d2 5.35
d3 4.773
Tap drill 5
Stress area As 20.12 mm² Size sheet · ISO 7094
M8
d1 inside diameter 9 – 9.36
h thickness 3
d2 outside diameter 26.7 – 28 Thread · ISO 261/262
Pitch P 1.25
d2 7.188
d3 6.466
Tap drill 6.75
Stress area As 36.61 mm² Size sheet · ISO 7094
M10
d1 inside diameter 11 – 11.43
h thickness 3
d2 outside diameter 32.4 – 34 Thread · ISO 261/262
Pitch P 1.5
d2 9.026
d3 8.16
Tap drill 8.5
Stress area As 57.99 mm² Size sheet · ISO 7094
M12
d1 inside diameter 13.5 – 13.93
h thickness 4
d2 outside diameter 42.4 – 44 Thread · ISO 261/262
Pitch P 1.75
d2 10.863
d3 9.853
Tap drill 10.25
Stress area As 84.27 mm² Size sheet · ISO 7094
M14
d1 inside diameter 15.5 – 15.93
h thickness 4
d2 outside diameter 48.1 – 50 Thread · ISO 261/262
Pitch P 2
d2 12.701
d3 11.546
Tap drill 12
Stress area As 115.44 mm² Size sheet · ISO 7094
M16
d1 inside diameter 17.5 – 18.2
h thickness 5
d2 outside diameter 54.1 – 56 Thread · ISO 261/262
Pitch P 2
d2 14.701
d3 13.546
Tap drill 14
Stress area As 156.67 mm² Size sheet · ISO 7094
M18
d1 inside diameter 20 – 20.84
h thickness 5
d2 outside diameter 58.1 – 60 Thread · ISO 261/262
Pitch P 2.5
d2 16.376
d3 14.933
Tap drill 15.5
Stress area As 192.47 mm² Size sheet · ISO 7094
M20
d1 inside diameter 22 – 22.84
h thickness 6
d2 outside diameter 70.1 – 72 Thread · ISO 261/262
Pitch P 2.5
d2 18.376
d3 16.933
Tap drill 17.5
Stress area As 244.79 mm² Size sheet · ISO 7094
M22
d1 inside diameter 24 – 24.84
h thickness 6
d2 outside diameter 78.1 – 80 Thread · ISO 261/262
Pitch P 2.5
d2 20.376
d3 18.933
Tap drill 19.5
Stress area As 303.4 mm² Size sheet · ISO 7094
M24
d1 inside diameter 26 – 26.84
h thickness 6
d2 outside diameter 82.8 – 85 Thread · ISO 261/262
Pitch P 3
d2 22.051
d3 20.319
Tap drill 21
Stress area As 352.5 mm² Size sheet · ISO 7094
M27
d1 inside diameter 30 – 30.84
h thickness 6
d2 outside diameter 95.8 – 98 Thread · ISO 261/262
Pitch P 3
d2 25.051
d3 23.319
Tap drill 24
Stress area As 459.41 mm² Size sheet · ISO 7094
M30
d1 inside diameter 33 – 34
h thickness 6
d2 outside diameter 102.8 – 105 Thread · ISO 261/262
Pitch P 3.5
d2 27.727
d3 25.706
Tap drill 26.5
Stress area As 560.59 mm² Size sheet · ISO 7094
M33
d1 inside diameter 36 – 37
h thickness 8
d2 outside diameter 112.8 – 115 Thread · ISO 261/262
Pitch P 3.5
d2 30.727
d3 28.706
Tap drill 29.5
Stress area As 693.55 mm² Size sheet · ISO 7094
M36
d1 inside diameter 39 – 40
h thickness 8
d2 outside diameter 122.5 – 125 Thread · ISO 261/262
Pitch P 4
d2 33.402
d3 31.093
Tap drill 32
Stress area As 816.72 mm² Provenance
Reviewed — dimensions cross-checked against the official ISO preview; values match.
Accessed 2026-09-23 · For design and safety-critical use, consult the current edition of the standard.
Data notes (3) Dimensions cross-checked against the official ISO 7094:2000 preview — values match. Only sizes whose values were found in the ISO 7094 table are published (15 sizes). The source publishes one identical table for DIN 440, ISO 7094.