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DIN 444 Eye bolts

DIN 444 Specification

Mechanical Fasteners Eye bolts

DIN 444 Scope

DIN 444 standard contains specifications for eye bolts with metric threads M5 to M39 in product classes A, B and C.

DIN 444 Dimensions

DIN 444 Dimensions
DIN 444 - A M10 × 70 - 4.6

    Key :
  • x1 thread run-out according to DIN 76-1
  • u ≤ 2P (incomplete thread)
Thread , d 1 P a b +2P d 2 d b r s Distance,
lg max.
Form A Form B and C Form A Form B and C
l ≤ 125
mm		 125 mm
< l ≤ 200 mm		 l > 200
mm		 Size=
min.		 max. max. min. Size max. min. max. min. max. min.
DIN 444 M5 0.8 16 - - 5 5,030 12 10.9 11.57 2.5 3.75 1,875 8 7.52 6 5.88 11
DIN 444 M6 1 18 - - 6 6,030 14 12.9 13.57 4 6 3 9 8.52 7 6.85 14
DIN 444 M8 1.25 22 28 - 8 8,036 18 16.9 17.57 4 6 3 11 10.3 9 8.85 16
DIN 444 M10 1.5 26 32 - 10 10,036 20 18.7 19.48 4 6 3 14 13.3 12 11.82 18
DIN 444 M12 1.75 30 36 49 12 12,043 25 23.7 24.48 6 9 4.5 17 16.3 14 13.82 23
DIN 444 M16 2 38 44 57 16 16,043 32 30.4 31.38 6 9 4.5 19 18.16 17 16.82 27
DIN 444 M20 2.5 46 52 65 18 18,043 40 38.4 39.38 6 9 4.5 24 23.16 22 21.79 32
DIN 444 M24 3 54 60 73 22 22,052 45 43.4 44.38 10 15 7.5 28 27.16 25 24.79 40
DIN 444 (M27) 3 60 66 79 24 c 24,052 50 48.4 49.38 10 15 7.5 30 29.16 27 26.79 42
25 25,052
DIN 444 M30 3.5 66 72 85 27 c 27,052 55 53.1 54.26 10 15 7.5 34 33 30 29.79 46
28 28,052
DIN 444 (M33) 3.5 - 78 91 30 30,052 60 58.1 59.26 16 22.4 12.8 38 37 34 33.75 54
DIN 444 M36 4 - 84 97 32 32,062 65 63.1 64.26 16 22.4 12.8 41 40 38 37.75 59
33 c 33,062
DIN 444 (M39) 4 - 90 103 35 35,062 70 68.1 69.26 16 22.4 12.8 46 45 41 40.75 61
36 c 36,062

DIN 444 Length

Size l
Form A Form B Form C
min. max. min. max. min. max.
20 18.95 21.05 19.35 20.65 19.6 20.4
25 23.95 26.05 24.35 25.65 24.6 25.4
30 28.95 31.05 29.35 30.65 29.6 30.4
35 33.75 36.25 34.2 35.8 34.5 35.5
40 38.75 41.25 39.2 40.8 39.5 40.5
45 43.75 46.25 44.2 45.8 44.5 45.5
50 48.75 51.25 49.2 50.8 49.5 50.5
55 53.5 56.5 54.05 55.95 54.4 55.6
60 58.5 61.5 59.05 60.95 59.4 60.6
65 63.5 66.5 64.05 65.95 64.4 65.6
70 68.5 71.5 69.05 70.95 69.4 70.6
75 73.5 76.5 74.05 75.95 74.4 75.6
80 78.5 81.5 79.05 80.95 79.4 80.6
90 88.25 91.75 88.9 91.1 89.3 90.7
100 98.25 101.75 98.9 101.1 99.3 100.7
110 108.25 111.75 108.9 111.1 109.3 110.7
120 118.25 121.75 118.9 121.1 119.3 120.7
130 128 132 128.75 131.25 129.2 130.8
140 138 142 138.75 141.25 139.2 140.8
150 148 152 148.75 151.25 149.2 150.8
160 156 164 158.75 161.25 159.2 160.8
180 176 184 178.75 181.25 179.2 180.8
200 195.4 204.6 198.55 201.45 199.1 200.9
220 215.4 224.6 218.55 221.45 219.1 220.9
240 235.4 244.6 238.55 241.45 239.1 240.9
260 254.8 265.2 258.4 261.6 258.9 261
280 274.8 285.2 278.4 281.6 278.9 281
300 294.8 305.2 298.4 301.6 298.9 301

DIN 444 Technical Delivery Conditions

Material Steel
General Requirements  Standard DIN ISO 8992
Thread Tolerance class Product class A = 6 ga
Product class B = 6 ga
Product class C = 8 ga
Standard DIN ISO 262,
DIN ISO 965-1
Mechanical properties Strength class 4.6; 5.6
other strength classes or materials by agreement
Standard DIN EN ISO 898-1
Marking Without
Limit dimensions, shape and position tolerances Product class A; B; C
Standard DIN EN ISO 4759-1
Surface finish - Coating DIN 267-2 applies to the roughness depths of the surfaces (see also Table 1, footnote C).

Requirements for galvanic surface protection are defined in DIN EN ISO 4042.

Requirements for hot-dip galvanizing are defined in DIN EN ISO 10684.
Surface condition Limit values for surface defects are set in DIN EN 26157-1.
Acceptance check DIN EN ISO 3269