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DIN EN ISO 8748 Standard Dimensions for Spring-type straight pins. Coiled, heavy duty

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Technical History and International Equivalents of DIN EN ISO 8748

Equivalent standards: ISO 8738 NF EN ISO 8748 BS EN ISO 8748

This standard (DIN EN ISO 8748) specifies the characteristics of coiled spring type straight pins heavy duty, made of steel or of martensitic or austenitic stainless steel, heavy duty with nominal diameter from 1,5 to 20 mm inclusive.

Dimensional Drawing and Technical Diagrams

239_3031.jpg

Key Dimensions and Technical Parameters

Dimensions in mm - source DIN EN ISO 8748
Publication date 07/2007 - Supersedes DIN EN ISO 8748: 03/1998

d1 nom

 1.5 2 2.5 3 3.5 4 5 6 8 10 12 14 16 20
d1 min/max before mounting

1.61

1.71

2.11

2.21

2.62

2.73

3.12

3.25

3.64

3.79

4.15

4.3

5.15

5.35

6.18

6.4

8.25

8.55

10.3

10.65

12.35

12.75

14.4

14.85

16.4

16.9

20.4

21
d max before mounting 1.4 1.9 2.4 2.9 3.4 3.9 4.85 5.85 7.8 9.75 11.7 13.6 15.6 19.6
a ≈ 0.5 0.7 0.7 0.9 1 1.1 1.3 1.5 2 2.5 3 3.5 4 4.5
s 0.17 0.22 0.28 0.33 0.39 0.45 0.56 0.67 0.9 1.1 1.3 1.6 1.8 2.2
Minimum double sear, kN a 1.9 3.5 5.5 7.6 10 13.5 20 30 53 84 120 165 210 340
Minimum double sear, kN

b

 1.45 2.5 3.8 5.7 7.6 10 15.5 23 41 64 91 - - -

a) applies to steel and martensitic stainless steel products

b) applies to austenitic stainless steel products

DIN EN ISO 8748 - Approximate mass, in kg x1000 pcs, (ρ=7,85 kg/dm3) - commercial lengths
nominal size
2
2.5
3
3.5
4
5
6
8
10
12
14
16
20
nominal length l
4 0.08
5 0.09 0.14
6 0.11 0.17 0.25 0.34
8 0.15 0.23 0.33 0.45 0.59
10 0.19 0.29 0.41 0.57 0.74 1.14
12 0.23 0.34 0.5 0.68 0.89 1.37 1.63
14 0.27 0.4 0.58 0.79 1.04 1.6 1.96
16 0.30 0.46 0.66 0.91 1.19 1.83 2.61 4.75
18 0.34 0.51 0.75 1.02 1.34 2.06 2.93 5.34
20 0.38 0.57 0.83 1.13 1.48 2.29 3.26 5.93 9.3
22 0.42 0.63 0.91 1.25 1.63 2.51 3.59 6.53 10.3
24 0.46 0.69 0.99 1.36 1.78 2.74 3.91 7.12 11.2 16
26 0.49 0.74 1.08 1.47 1.93 2.97 4.24 7.71 12.1 17.4
28 0.53 0.8 1.16 1.59 2.08 3.2 4.57 8.31 13.1 18.7 25.4
30 0.57 0.86 1.24 1.7 2.23 3.43 4.89 8.9 14 20 27.2
32 0.61 0.91 1.33 1.81 2.37 3.66 5.22 9.5 14.9 21.4 29 36.8
35 0.66 1 1.45 1.98 2.6 4 5.71 10.39 16.3 23.4 31.7 10.3
40 0.76 1.14 1.66 2.27 2.97 4.57 6.52 11.87 18.7 26.7 36.2 46
45 1.29 1.87 2.25 3.34 5.14 7.34 13.35 21 30.1 40.8 51.8 83.4
50 2.07 2.83 3.71 5.71 8.15 14.84 23.3 33.4 45.3 57.6 92.7
55 4.08 6.29 8.97 16.32 25.6 36.8 49.8 63.3 102
60 4.45 6.86 9.78 17.8 28 40.1 54.4 69.1 111.2
65 10.6 19.29 30.3 43.4 58.9 74.8 120.5
70 11.41 20.77 32.6 46.8 63.4 80.6 129.8
75 12.23 22.25 35 50.1 68 86.3 139.1
80 23.74 37.3 53.5 72.5 92.1 148.3
85 25.22 39.6 56.8 77 97.8 157.6
90 26.71 42 60.1 81.6 103.6 166.9
95 28.19 44.3 63.5 86.1 109.3 176.1
100 29.67 46.6 66.8 90.6 115.1 185.4
120 35.61 56 80.2 108.7 138.1 222.5
140 93.5 126.9 161.1 259.6
160 106.9 145 184.2 296.6
180 163.1 207.2 333.7
200 181.2 230.2 370.8

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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