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Unit:mm

General Type Wire Thread Inserts - Coarse Thread

GB /T 24425.1 - 2009

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国标GB /T24425.1 - 2009 GB24425.1 24425.1G General Type Wire Thread Inserts - Coarse Thread
Download CAD Model
Thread Size
M2 M2.5 M3 M4 M5 M6 M7 M8 M10 M12 M14
P Pitch (Coarse thread)
F min
max
Dz min
max
T min
max
a min
max
R max
0.4 0.45 0.5 0.7 0.8 1 1 1.25 1.5 1.75 2
- - - - - 7.28 8.28 9.55 11.82 14.2 16.47
- - - - - 7.58 8.58 9.85 12.1 14.5 16.87
2.53 3.2 3.8 5.05 6.25 7.58 8.58 9.85 12.1 14.5 16.87
2.7 3.7 4.35 5.6 6.8 7.95 9.2 10.35 12.8 15 17.87
1.2 1.5 1.8 2.4 2.9 3.5 4 4.7 5.8 6.9 8.1
1.6 2 2.4 3.2 4 4.8 5.5 6.3 7.9 9.5 11
40° 40° 40° 40° 40° 40° 40° 40° 40° 30° 30°
90° 90° 90° 90° 90° 90° 80° 80° 80° 70° 70°
0.3 0.3 0.4 0.5 0.6 0.7 0.8 1 1.2 1.6 2
Thread Size
M16 M18 M20 M22 M24 M27 M30 M33 M36 M39
P Pitch (Coarse thread)
F min
max
Dz min
max
T min
max
a min
max
R max
2 2.5 2.5 2.5 3 3 3.5 3.5 4 4
18.47 21 23.01 25.01 27.55 30.55 34.1 37.09 40.63 43.63
18.87 21.4 23.46 25.61 28.15 31.15 34.7 37.7 41.33 44.33
18.87 21.4 23.46 25.61 28.15 31.15 34.7 37.7 41.33 44.33
19.9 22 24.4 26.9 29.1 32.4 35.81 39.01 42.67 45.75
9.1 10.4 11.4 12.4 13.6 15.1 16.9 18.4 20.2 21.7
12.5 14.2 15.7 17.2 18.8 21.1 23.4 25.7 28.1 30.3
30° 30° 30° 30° 30° 30° 30° 30° 30° 30°
70° 70° 60° 60° 60° 60° 60° 60° 60° 60°
2 3 3 3 3 3 3 3 3 3

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