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DIN 444:2017 Eye Bolt

DIN 444:2017 Eye Bolt includes an eye-shaped head for hinged, tensioning, tie-rod, or swinging connection points. Its key benefit is allowing a degree of angular compensation within the assembly.

The product is commonly used in clamping mechanisms, tensioning devices, linkage assemblies, latch structures, and adjustable connection systems. The eye can work with pins, hooks, or other connecting parts so the structure retains movement freedom under load.

Eye size, thread length, load direction, and material strength should be reviewed during selection. For alternating loads or frequently rotating positions, suitable pins, lubrication, and corrosion protection should be used together.

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Dimensions unit: mm

Thread size  M5 M6 M8 M10 M12 M16 M20 M24 (M27)
d
P Pitch 0.8 1 1.25 1.5 1.75 2 2.5 3 3
b L≤125 16 18 22 26 30 38 46 54 60
125＜L≤200 - - 28 32 36 44 52 60 66
L＞200 - - - - 49 57 65 73 79
d2 Min.=Nominal 5 6 8 10 12 16 18 22 24 ②
Max. 5.03 6.03 8.036 10.036 12.043 16.043 18.043 22.052 24.052
Sd Max. 12 14 18 20 25 32 40 45 50
Nominal Min. 10.9 12.9 16.9 18.7 23.7 30.4 38.4 43.4 48.4
Type B and C  Min. 11.57 13.57 17.57 19.48 24.48 31.38 39.38 44.38 49.38
r Nominal 2.5 4 4 4 6 6 6 10 10
Max. 3.75 6 6 6 9 9 9 15 15
Min. 1.875 3 3 3 4.5 4.5 4.5 7.5 7.5
s Nominal Max. 8 9 11 14 17 19 24 28 30
Min. 7.52 8.52 10.3 13.3 16.3 18.16 23.16 27.16 29.16
Type B and C  Max. 6 7 9 12 14 17 22 25 27
Min. 5.88 6.85 8.85 11.82 13.82 16.82 21.79 24.79 26.79
Thousand pieces of steel weigh ≈kg - - - - - - - - -
Thread length b - - - - - - - - -

d
P Pitch 3 3.5 3.5 3.5 4 4 4 4
b L≤125 60 66 66 - - - - -
125＜L≤200 66 72 72 78 84 84 90 90
L＞200 79 85 85 91 97 97 103 103
d2 Min.=Nominal 25 27 ② 28 30 32 33 ② 35 36 ②
Max. 25.052 27.052 28.052 30.052 32.062 33.062 35.062 36.062
Sd Max. 50 55 55 60 65 65 70 70
Nominal Min. 48.4 53.1 53.1 58.1 63.1 63.1 68.1 68.1
Type B and C  Min. 49.38 54.26 54.26 59.26 64.26 64.26 69.26 69.26
r Nominal 10 10 10 16 16 16 16 16
Max. 15 15 15 22.4 22.4 22.4 22.4 22.4
Min. 7.5 7.5 7.5 12.8 12.8 12.8 12.8 12.8
s Nominal Max. 30 34 34 38 41 41 46 46
Min. 29.16 33 33 37 40 40 45 45
Type B and C  Max. 27 30 30 34 38 38 41 41
Min. 26.79 29.79 29.79 33.75 37.75 37.75 40.75 40.75
Thousand pieces of steel weigh ≈kg - - - - - - - -
Thread length b - - - - - - - -

①Material:

a) Steel, strength grade: 4.6;5.6, standard DIN EN ISO 898-1

b)Other materials and strength levels as per agreement

②, Due to the bolts according to DIN EN 22340 and DIN EN 22341, additional hole diameters of 24mm, 27mm, 33mm and 36mm are added. If eyebolts are supplied with these holes, this must be noted in the name.

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