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Prevailing Torque Type Wire Thread Inserts - Coarse Thread

GB /T 24425.3 - 2009

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国标GB /T24425.3 - 2009 GB24425.3 24425.3G Prevailing Torque Type Wire Thread Inserts - Coarse Thread
Thread Size
M3 M4 M5 M6 M7 M8 M10 M12 M14 M16
P Pitch (Coarse thread)
F min
max
Dz min
max
T min
max
a min
max
R max
0.5 0.7 0.8 1 1 1.25 1.5 1.75 2 2
- - - 7.28 8.28 9.55 11.82 14.2 16.47 18.47
- - - 7.58 8.58 9.85 12.1 14.5 16.87 18.87
3.8 5.05 6.25 7.58 8.58 9.85 12.5 14.50 16.87 18.87
4.35 5.6 6.8 7.95 9.2 10.35 12.8 15 17.87 19.9
1.8 2.4 2.9 3.5 4 4.7 5.8 6.9 8.1 9.1
2.4 3.2 4 4.8 5.5 6.3 7.9 9.5 11 12.5
40° 40° 40° 40° 40° 40° 40° 30° 30° 30°
90° 90° 90° 90° 80° 80° 80° 70° 70° 70°
0.4 0.5 0.6 0.7 0.8 1 1.2 1.6 2 2
Thread Size
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
2.5 2.5 2.5 3 3 3.5 3.5 4 4
21 23.01 25.01 27.55 30.55 34.1 37.09 40.63 43.63
21.4 23.46 25.61 28.15 31.15 34.7 37.7 41.33 44.33
21.4 23.46 25.61 28.15 31.15 34.7 37.7 41.33 44.33
22 24.4 26.9 29.1 32.4 35.81 39.01 42.67 45.75
10.4 11.4 12.4 13.6 15.1 16.9 18.4 20.2 21.7
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°
70° 60° 60° 60° 60° 60° 60° 60° 60°
3 3 3 3 3 3 3 3 3

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