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DIN 71803:1988 Ball Joint Pin

DIN 71803:1988 Ball Joint Pin is characterized by a ball joint pin structure and is intended for mechanical connections involving ball joints, linkages, and angular movement.

The spherical end helps accommodate angular misalignment, while the pin body provides connection and guidance, improving flexibility and assembly tolerance in motion systems. In assembly, the design helps reduce supporting operations, improve positioning consistency, and maintain good interchangeability in repeated production or field service.

Typical applications include gas spring end fittings, linkage mechanisms, vehicle accessories, automation fixtures, and light mechanical joints. The product can be configured with ball diameter, pin diameter, surface hardening, and corrosion protection to suit indoor, outdoor, light-load, vibration-exposed, or export supply conditions.

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PREV：ASME/ANSI B18.25.3M:1998 Metric Parallel Key NEXT：No next product

Dimensions unit: inch 

Specification

6

8

8

10

10

13

13

16

16

19

19

dk

Max.

6

8

8

10

10

13

13

16

16

19

19

Min.

5.97

7.964

7.964

9.964

9.964

12.957

12.957

15.957

15.957

18.948

18.948

L1

Nominal

3.5

4

7.5

4.5

8

5

10

6

13

12

18

Max.

3.7

4.2

7.7

4.7

8.2

5.2

10.2

6.2

13.2

12.2

18.2

Min.

3.3

3.8

7.3

4.3

7.8

4.8

9.8

5.8

12.8

11.8

17.8

h

Max.

2.4

2.4

2.4

2.6

2.6

2.8

2.8

3.1

3.1

3.4

3.4

Min.

2

2

2

2.2

2.2

2.4

2.4

2.7

2.7

3

3

d2

-

M5

M5

M6

M6

M8

M8

M10

M10

M14X1.5

M14X1.5

dc

Max.

6

8

8

10

10

13

13

16

16

19

19

Min.

5.7

7.64

7.64

9.64

9.64

12.57

12.57

15.57

15.57

18.48

18.48

d4

Nominal

3

4

4

5

5

6.5

6.5

8

8

10

10

Max.

3.2

4.2

4.2

5.2

5.2

6.7

6.7

8.2

8.2

10.2

10.2

Min.

2.8

3.8

3.8

4.8

4.8

6.3

6.3

7.8

7.8

9.8

9.8

d5

Max.

4

5

5

6

6

8

8

10

10

14

14

Min.

3.925

4.925

4.925

5.925

5.925

7.91

7.91

9.91

9.91

13.89

13.89

L2

Nominal

-

10.2

10.2

12.5

12.5

16.5

16.5

20

20

28

28

Max.

-

10.5

10.5

12.8

12.8

16.8

16.8

20.3

20.3

28.3

28.3

Min.

-

9.9

9.9

12.2

12.2

16.2

16.2

19.7

19.7

27.7

27.7

L3

Nominal

9.2

12.5

12.5

15.5

15.5

18.5

18.5

23

23

28.5

28.5

Max.

9.5

12.8

12.8

15.8

15.8

18.8

18.8

23.3

23.3

28.8

28.8

Min.

8.9

12.2

12.2

15.2

15.2

18.2

18.2

22.7

22.7

28.2

28.2

L4

Max.

-

4

4

4

4

5.3

5.3

7.3

7.3

10.8

10.8

SW

Applicable to C

-

7

7

8

8

11

11

13

13

16

16

Weight per thousand pieces kg

Type A,C

-

4.55

4.55

8.5

8.5

17.7

17.7

35.1

35.1

71.2

71.2

Type B

1.9

3.85

4.35

7.1

7.8

14.2

16

23.5

29.6

56.2

63.7

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