DIN 939

Studs

DIN 939 = with screwed-in end ≈ 1.25 d

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Thread Size
d		 M4 M5 M6 (M7)
P Pitch 0.7 0.8 1 1
Fine thread / / / /
Very fine thread / / / /
b1 5 6.5 7.5 9
b2 L≤125 14 16 18 20
125＜L≤200 20 22 24 26
L＞200 / / / /
x1 1.75 2 2.5 2.5
x2 0.9 1 1.25 1.25

Thread Size
d		 M8 M10 M12
P Pitch 1.25 1.5 1.75
Fine thread 1 1.25 1.25
Very fine thread / / 1.5
b1 10 12 15
b2 L≤125 22 26 30
125＜L≤200 28 32 36
L＞200 / 45 49
x1 3.2 3.8 4.3
x2 1.6 1.9 2.2

Thread Size
d		 (M14) M16 (M18)
P Pitch 2 2 2.5
Fine thread 1.5 1.5 1.5
Very fine thread / / /
b1 18 20 22
b2 L≤125 34 38 42
125＜L≤200 40 44 48
L＞200 53 57 61
x1 5 5 6.3
x2 2.5 2.5 3.2

Thread Size
d		 M20 (M22) M24
P Pitch 2.5 2.5 3
Fine thread 1.5 1.5 2
Very fine thread / / /
b1 25 28 30
b2 L≤125 46 50 54
125＜L≤200 52 56 60
L＞200 65 69 73
x1 6.3 6.3 7.5
x2 3.2 3.2 3.8

Thread Size
d		 (M27) M30 (M33)
P Pitch 3 3.5 3.5
Fine thread 2 2 2
Very fine thread / / /
b1 35 38 42
b2 L≤125 60 66 72
125＜L≤200 66 72 78
L＞200 79 85 91
x1 7.5 9 9
x2 3.8 4.5 4.5

Thread Size
d		 M36 (M39) M42
P Pitch 4 4 4.5
Fine thread 3 3 3
Very fine thread / / /
b1 45 50 52
b2 L≤125 78 84 90
125＜L≤200 84 90 96
L＞200 97 103 109
x1 10 10 11
x2 5 5 5.5

Thread Size
d		 (M45) M48 (M52)
P Pitch 4.5 5 5
Fine thread 3 3 3
Very fine thread / / /
b1 58 60 65
b2 L≤125 96 102 110
125＜L≤200 102 108 116
L＞200 115 121 129
x1 11 12.5 12.5
x2 5.5 6.3 6.3



b1 = screwed-in end
b2 = nut end

b21 for L ≤ 125 mm

b22 for L ≤ 200 mm

b3 for L > 200 mm


All information is strictly informative