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DIN 960:1990 Fine Thread Hex Head Bolt

DIN 960:1990 Fine Thread Hex Head Bolt uses a fine thread profile for joints requiring more precise preload control, higher engagement accuracy, and improved resistance to loosening. More engaged threads within a limited length support finer adjustment.

The hex head can be installed with standard tools and is used in automotive components, transmission mechanisms, hydraulic equipment, adjustment brackets, and vibration-prone mechanical connections. Fine threads are also useful where wall thickness or thread depth is limited.

Strength class, material, and finish can be selected according to load level and environmental conditions. For high-frequency vibration or long-running equipment, it can be combined with locking nuts, spring washers, or thread-locking solutions.

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PREV：DIN 609:2016 Hex Head Fit Hole Long Thread Bolt NEXT：JIS B 1180 (AT2.1):2004 Small Hex Head Bolt

Dimensions unit: mm

Thread size M8 M10 M12 (M14) M16 (M18) M20 (M22) M24 (M27) M30 (M33) M36 (M39)
d
P Pitch Fine Teeth 1 1 1 1.5 1.5 1.5 2 1.5 2 2 2 2 2 3 3
Fine Teeth 2 - 1.25 1.25 - - 1.5 2 1.5 1.5 - - - - -
b L≤125 22 26 30 34 38 42 46 50 54 60 66 72 78 84
125＜L≤200 28 32 36 40 44 48 52 56 60 66 72 78 84 90
L＞200 41 45 49 53 57 61 65 69 73 79 85 91 97 103
c Min. 0.15 0.15 0.15 0.15 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.2 0.3
Max. 0.6 0.6 0.6 0.6 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 1
da Max. 9.2 11.2 13.7 15.7 17.7 20.2 22.4 24.4 26.4 30.4 33.4 36.4 39.4 42.4
ds Max. 8 10 12 14 16 18 20 22 24 27 30 33 36 39
Class A Min. 7.78 9.78 11.73 13.73 15.73 17.73 19.67 21.67 23.67 - - - - -
Class B Min. 7.64 9.64 11.57 13.57 15.57 17.57 19.48 21.48 23.48 26.48 29.48 32.38 35.38 38.38
dw Class A Min. 11.6 15.6 17.4 20.5 22.5 25.3 28.2 30 33.6 - - - - -
Class B Min. 11.4 15.4 17.2 20.1 22 24.8 27.7 29.5 33.2 38 42.7 46.6 51.1 55.9
e Class A Min. 14.38 18.9 21.1 24.49 26.75 30.14 33.53 35.72 39.98 - - - - -
Class B Min. 14.2 18.72 20.88 23.91 26.17 29.56 32.95 35.03 39.55 45.2 50.85 55.37 60.79 66.44
k Nominal  5.3 6.4 7.5 8.8 10 11.5 12.5 14 15 17 18.7 21 22.5 25
Class A Min. 5.15 6.22 7.32 8.62 9.82 11.28 12.28 13.78 14.78 - - - - -
Max. 5.45 6.58 7.68 8.98 10.18 11.72 12.72 14.22 15.22 - - - - -
Class B Min. 5.06 6.11 7.21 8.51 9.71 11.15 12.15 13.65 14.65 16.65 18.28 20.58 22.08 24.58
Max. 5.54 6.69 7.79 9.09 10.29 11.85 12.85 14.35 15.35 17.35 19.12 21.42 22.92 25.42
k1 Min. 3.54 4.28 5.05 5.96 6.8 7.8 8.5 9.6 10.3 11.7 12.8 14.4 15.5 17.2
r Min. 0.4 0.4 0.6 0.6 0.6 0.6 0.8 0.8 0.8 1 1 1 1 1
s Max.=Nominal  13 17 19 22 24 27 30 32 36 41 46 50 55 60
Class A Min. 12.73 16.73 18.67 21.67 23.67 26.67 29.67 31.61 35.38 - - - - -
Class B Min. 12.57 16.57 18.48 21.16 23.16 26.16 29.16 31 35 40 45 49 53.8 58.8
Thousand pieces of steel weigh ≈kg  - - - - - - - - - - - - - -
Thread length b  - - - - - - - - - - - - - -

Thread size M42 (M45) M48 (M52) M56 (M60) M64 (M68) M72 (M76) M80 M90 M100
d
P Pitch Fine Teeth 1 3 3 3 3 4 4 4 4 4 4 4 4 4
Fine Teeth 2 - - - - - - - - - - - - -
b L≤125 90 96 102 - - - - - - - - - -
125＜L≤200 96 102 108 116 124 132 140 148 158 164 172 192 -
L＞200 109 115 121 129 137 145 153 161 169 177 185 205 225
c Min. 0.3 0.3 0.3 0.3 - - - - - - - - -
Max. 1 1 1 1 1 1 1 1 1 1 2 2 2
da Max. 45.6 48.6 52.6 56.6 63 67 71 75 79 83 87 97 108
ds Max. 42 45 48 52 56 60 64 68 72 76 80 90 100
Class A Min. - - - - - - - - - - - - -
Class B Min. 41.38 44.38 47.38 51.26 55.26 59.26 63.26 67.26 71.26 75.26 79.26 89.13 99.13
dw Class A Min. - - - - - - - - - - - - -
Class B Min. 59.9 64.7 69.4 74.2 78.7 83.4 88.2 92.9 97.7 102.4 107.2 121.1 135.4
e Class A Min. - - - - - - - - - - - - -
Class B Min. 71.3 76.95 82.6 88.25 93.56 99.21 104.86 110.51 116.16 121.81 127.46 144.08 161.03
k Nominal  26 28 30 33 35 38 40 43 45 48 50 57 63
Class A Min. - - - - - - - - - - - - -
Max. - - - - - - - - - - - - -
Class B Min. 25.58 27.58 29.58 32.5 34.5 37.5 39.5 42.5 44.5 47.5 49.5 56.4 62.4
Max. 26.42 28.42 30.42 33.5 35.5 38.5 40.5 43.5 45.5 48.5 50.5 57.6 63.6
k1 Min. 17.9 19.3 20.9 22.8 24.2 26.2 27.6 29.8 31.2 33.2 34.6 39.5 43.7
r Min. 1.2 1.2 1.6 1.6 2 2 2 2 2 2 2 2.5 2.5
s Max.=Nominal  65 70 75 80 85 90 95 100 105 110 115 130 145
Class A Min. - - - - - - - - - - - - -
Class B Min. 63.1 68.1 73.1 78.1 82.8 87.8 92.8 97.8 102.8 107.8 112.8 127.5 142.5
Thousand pieces of steel weigh ≈kg  - - - - - - - - - - - - -
Thread length b  - - - - - - - - - - - - -

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