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   Spring Dowel Pin
 
Spring Dowel Pin

Outer Diameter
1mm to 100mm

Thickness
0.2mm to 15mm

Length
3mm to 250mm

 
 
Salient Features of
Spring Dowel Pin :

• Minimizes the use of nuts and bolts.
• Stable locking can be attained.
• Longer service life.
• Ease of installation.
• Lower maintenance cost.
• Can be installed in sync with nuts and bolts.

Material of
Spring Dowel Pin :

Dowel Pins are manufactured out of Spring Steel 75 C 6 as per IS 2507 - 1975, heat-treated to 47 to 51 HRC. (Also see note)

Surface Finish of
Spring Dowel Pin :

Generally all Dowels Pins are thermally blackened. We also provide Zinc and Phosphate surface protection.

Quality Assurance:
All Dowel pins are thoroughly inspected for Dimensions like Outer Diameter, Inner Diameter, Length, Thickness, Longitudinal gap, Chamfer Length and Hardness according to IS:5988, DIN 1481 or as per party’s specification. Dowel are checked for resilience and recovery test in order to ensure better service life.
 
Spring Dowel Pin
 

Table 1 : Preferred Lengths

Length mm

In steps of mm

4 to 6

1

6 to 32

2

32 to 40

4

40 to 100

5

100 to 200

20

Table 2 : Tolerances on length

Length mm

Tolerance mm

4 to 10

+ 0.5

12 to 50

+ 1.0

50 to 200

+ 1.5
 
 
 

TABLE 3 : DIMENSIONS FOR SPRING DOWEL SLEEVES (LIGHT PATTERN)

Catalogue No.

Nominal Diameter Mm

S

A

 

Before Fitting

For Bolt Size [IS:4218 (Part VI)- 1967*]6g

Corres-ponding Washer (IS:2016- 1967**)

Preferred Length Range (from Up to and including) L

d1

Tol. on d1

d2
approx.

P020L

2

0.2

0.35

2.3

+ 0.1

1.9

-

-

4 - 30

P025L

2.5

0.25

0.45

2.8

2.3

-

-

4 - 30

P030L

3

0.3

0.5

3.3

+ 0.2

2.7

-

-

4 - 40

P035L

3.5

0.35

0.6

3.8

3.1

-

-

4 - 40

P040L

4

0.5

0.7

4.4

3.4

-

-

4 - 50

P045L

4.5

0.5

0.8

4.8

3.8

M3

3.2

4 - 50

P050L

5

0.5

1.6

5.4

4.4

-

-

5 - 80

P060L

6

0.75

1.6

6.4

 

 

 

+ 0.3

 

 

 

 

4.9

M4

4.3

10-100

P070L

7

0.75

1.6

7.5

6

M5

5.3

10-100

P080L

8

0.75

2

8.5

7

M6

6.4

10-120

P100L

10

1

2

10.5

8.5

-

-

10-160

P110L

11

1

2

11.5

9.5

M8

8.4

10-160

P120L

12

1

2

12.5

10.5

-

-

10-180

P130L

13

1.25

2

13.5

11

M10

10.5

10-180

P140L

14

1.5

2

14.5

11.5

-

-

10-180

P016L

16

1.5

2
16.5

13.5

M12

13

10-200

P180L

18

1.75

2

18.5

 

 

 

 

 

+ 0.4

 

 

 

 

 

15

M14

15

10-200

P200L

20

2

2

20.5

16.5

-

-

10-200

P210L

21

2

2

21.5

17.5

M16

17

14-200

P230L

23

2

3

23.5

19.5

M18

19

14-200

P250L

25

2

3

25.5

21.5

M20

21

14-200

P280L

28

2.5

3

28.5

23.5

M22

23

14-200

P300L

30

2.5

3

30.5

25.5

M24

25

14-200

P350L

35

3.5

3

35.5

28.5

M27

28

20-200

P400L

40

4

4

40.5

32.5

M30

31

20-200

P450L

45

4

4

45.5

37.5

M36

37

20-200

P500L

50

5

4

50.5

40.5

M39

40

20-200

*     Limits of sizes for commercial nuts and bolts (Diameter range 1 to 39 mm)
**    Specification for plain washers.
 
 

TABLE 4 : DIMENSIONS FOR SPRING DOWEL SLEEVES (HEAVY PATTERN)

Catalogue
No.

 

 

Nominal
ø mm

 

S

 

 

A

 

 

Before Fitting

For Bolt (Part VI) - 1967] 6g

Corres-ponding (IS:2016- 1967)

Preferred and Including) L

d1

 

Tol.

on d1

D2
approx.

P010H

1

0.2

0.15

1.2

+ 0.1

0.8

-

-

4-20

P015H

1.5

0.3

0.25

1.7

1.1

-

-

4-20

P020H

2

0.4

0.35

2.3

1.5

-

-

4-30

P025H

2.5

0.5

0.45

2.8

1.8

-

-

4-30

P030H

3

0.6

0.5

3.3

+ 0.2

2.1

-

-

4-40

P035H

3.5

0.75

0.6

3.8

2.3

-

-

4-40

P040H

4

0.8

0.7

4.4

2.8

-

-

4-50

P045H

4.5

1

0.8

4.9

2.9

-

-

5-50

P050H

5

1

1.6

5.4

3.4

-

-

5-80

P060H

6

1.25

1.6

6.4

+ 0.3

3.9

M3

3.2

10-100

P080H

8

1.5

2

8.5

5.5

M4

4.3

10-120

P100H

10

2

2

10.5

6.5

M5

5.3

10-160

P120H

12

2.5

2

12.5

7.5

M6

6.4

10-180

P130H

13

2.5

2

13.5

8.5

-

-

10-180

P140H

14

3

2

14.5

8.5

-

-

10-200

P160H

16

3

2

16.5

10.5

M8

8.4

10-200

P180H

18

3.5

2

18.5

+ 0.4

11.5

M10

10.5

10-200

P200H

20

4

3

20.5

12.5

-

-

10-200

P210H

21

4

3

21.5

13.5

M12

13

14-200

P250H

25

5

3

25.5

15.5

M14

15

14-200

P280H

28

5.5

3

28.5

17.5

M16

17

14-200

P300H

30

6

3

30.5

18.5

-

-

14-200

P320H

32

6

3

32.5

20.5

M18

19

20-200

P350H

35

7

3

35.5

21.5

M20

21

20-200

P380H

38

7.5

4

38.5

23.5

M22

23

20-200

P400H

40

7.5

4

40.5

25.5

M24

25

20-200

P450H

45

8.5

4

45.5

28.5

M27

28

20-200

P500H

50

9.5

4

50.5

31.5

M30

31

20-200
 

Ordering :
The basic format of ordering the Spring Dowel Pins is as follows

FOR LIGHT SERIES :
PAAALXXX

Where XXX is the length required. Light Spring dowel pin of 10 mm nominal diameter and length 40 mm to be ordered using catalogue no. Pl00L040, Where 040 is added instead of 40 mm.

FOR HEAVY SERIES :
PAAAHXXX

It is same as light series, but replace the letter L with letter H. Heavy Spring dowel pin of 10 mm nominal diameter and length 40 mm to be ordered using catalogue no. Pl00H040, Where 040 is added instead of 40 mm.
 

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Thane - 401105, Maharashtra, India. Telephone - (022) 28191644 / 28192604 / 65777180 Mobile - + 91 9820094249