917

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October 2000

DEUTSCHE NORM

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DIN

Hexagon cap nuts

917 Supersedes February 2000 edition.

ICS 21.060.20 Sechskant-Hutmuttern, niedrige Form

In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker.

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Foreword This standard has been prepared by Technical Committee Schrauben und Muttern mit AuBenantrieb of the Normenausschuss Mechanische Verbindungselemente (Fasteners Standards Committee).

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Amendments This standard differs from the February 2000 edition in that the designation has been amended by including the width across flats for sizes M10, M12, M14 and M22 (cf. clause 5). .-

All dimensions are in millimetres.

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This standard specifies dimensions and technical delivery conditions for sizes M4 pitch thread hexagon cap nuts of product grade A.

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Previous editions ,:::;::-::--;:-';;'-~~1''::::,:,~ DIN 917: 1970-12, 1977-04, 1987-06; 2000-02; DIN 917-1: 1942-04, 1953-10,~~·;a:.~o~::';·'I>\'l SI~'\>l'l'<~

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Normative references

This standard incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendments to or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies. DIN 13-15 ISO metric screw threads - Fundamental deviations and tolerances for screw threads of 1 mm diameter and larger DIN 76-1 Thread run-outs and thread undercuts for ISO metric screw threads in accordance with the DIN 13 series DIN 267-2 Fasteners - Technical delivery conditions - Product grades and tolerances DIN 267-10 Fasteners - Technical delivery conditions - Hot-dip galvanized components DIN 4000-2 Tabular layouts of article characteristics for bolts, screws and fit bolts DIN EN 493 Fasteners - Surface discontinuities - Nuts DIN EN 20898-2 Mechanical properties of fasteners - Part 2: Nuts with coarse pitch thread and specified proof load values (ISO 898-2 : 1992) DIN EN 28839 Mechanical properties of fasteners - Bolts, screws, studs and nuts made of non-ferrous metals (ISO 8839 : 1986) DIN EN ISO 898-6 Mechanical properties of fasteners - Part 6: Nuts with fine pitch thread and specified proof load values (ISO 898-6 : 1994) Fasteners - Acceptance inspection (ISO/DIS 3269 : 1998)*) DIN EN ISO 3269 *) Currently at draft stage. Continued on pages 2 to 5.

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Translation by DIN-Sprachendienst. In case of doubt, the German-language original should be consulted as the authoritative text.

© No part of this translation may be reproduced without the prior permission of DIN Deutsches Institut fOr Normung e, V., Berlin, Beuth Verlag GmbH, 10772 Berlin, Germany, has the exclusive right of sale for German Standards (DIN-Normen).

Ref. No. DIN 917: 2000-10 English price group 06

Sales No. 0106 02.01

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Page 2 DIN 917: 2000-10 DIN EN ISO 3506-2 Mechanical properties of corrosion-resistant stainless steel fasteners - Part 2: Nuts (ISO 3506-2: 1997) DIN EN ISO 4042 Fasteners - Electroplated coatings (ISO 4042 : 1999)

DIN EN ISO 4759-1 Tolerances for fasteners - Part 1: 80lts, screws, studs and fit bolts - Product grades A,

8 and C (ISO/DIS 4759-1 : 1997)*) DIN EN ISO 10683 Fasteners - Non-electrically applied zinc flake coatings (ISO/DIS 10683 : 1999)*) Fasteners - General requirements for bolts, screws, studs and fit bolts ISO 8992 : 1986

3

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Dimensions

Nut dimensions shall be as given in figures 1 and 2 and table 1.

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m w is the minimum wrenching height. Figure 1: Nut dimensions for sizes up to M10 (notation)

(with thread run-out or thread undercut, at the manufacturer's discretion)

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Other dimensions as in figure 1. Figure 2: Nut dimensions for sizes M12 and above (notation) (with thread undercut)

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*) Currently at draft stage.

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Table 1: Nut dimensions Thread size (d)

M12

(M14)

M16

(M18)

M10x 1

M12 x 1,5

(M14 x 1,5)

M16 x 1,5

(M18 x 1,5)

M20 x 2

-

M10x 1,25

M12 x 1,25

-

-

(M18 x 2)

M20 x 1,5

1,25

1,5

2

2

2,5

2,5

Series 1

M4

M5

M6

M8

Series 2

-

-

-

M8x1

-

Series 3 P1)

0,7

0,8

1

M10

1,75

M20

Min.

4

5

6

8

10

12

14

16

18

20

Max.

4,6

5,75

6,75

8,75

10,8

13

15,1

17,3

19,5

21,6

dw

Min.

5,9

6,9

8,9

e

Min,

7,66

8,79

11,05

Series 1

1,05

1,2

1,5

Series 2

-

-

Series 3 Series 1

-

Series 2

-

Series 3

-

-

da

x max,2)

g2

max.3 )

14,6

16,6

19,6

22,5

24,9

27,7

14,38

17,77

20,03

23,35

26,75

29,56

32,95

1,87

2,25

-

-

-

-

-

-

1,5

1,5

-

-

-

-

1,87

-

-

-

-

-

-

-

-

6,4

7,3

7,3

9,3

9,3

5,6

5,6

5,6

5,6

7,3

4,9

-

-

7,3

5,6

11,6

-

-

-

Max. = nominal size

5,5

7

9

12

14

16

18

20

22

25

Min.

5,2

6,64

8,64

11,57

13,57

15,57

17,57

19,48

21,48

24,48

mw

Min,

2,75

6

7

8

9

10

11

12,5

r

,.,

8

10

12

15

20

25

28

30

32

35

s

Max. = nominal size

7

8

10

13

16 4)

18 4)

21 4)

24

27

30

Min.

6,78

7,78

9,78

12,73

15,73

17,73

20,67

23,67

26,16

29,16

Min.

4,16

4,96

6,71

9,21

10,65

13,15

14,65

16,65

18,58

20,58

11,35

13,85

15,35

17,35

19,42

21,42

h

t w

3,5

4,5

Max.

4,64

5,44

7,29

9,79

Min.

1

1

1,5

2

2

2

2

2

2

2,5

1,31

2,2

4,29

9,5

5)

5)

5)

48,1

70

94,1

Approx. mass, in kg, per 1 000 units

Bracketed sizes should not be used.

1) Pitch of coarse thread as specified in DIN 13-15.

2) For sizes up to and including M10, thread undercut or thread run-out with x not exceeding 1,5 P.

3) For sizes above M1 0, thread undercut with g2 not exceeding the values specified in DIN 76-1 (type D, short thread undercut).

4) The width across flats shall be included in the designation (cf. clause 5).

5) No values available.

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Table 1 (concluded)

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Thread size

(d)

Series 1

(M22)

M24

(M27)

M30

M36

M42

Sedes 2

(M22 x 1,5)

M24x2

(M27 x 2)

M30x2

M36x3

M42x3

Series 3

(M22 x 2)

-

-

-

-

-

2,5

3

3

3,5

4

4,5

P1)

da dw

e

g2

max. 3 )

(M64)

(M72 x 6)

(M56 x 4)

(M64 x 4)

(M72 x 4)

-

-

-

-

5

5,5

6

-

- M48 x 3

24

27

30

36

42

48

56

64

72

25,9

29,1

32,4

38,9

45,4

51,8

61

69,1

77,8

Min.

31,4

33,3

38

42,8

51,1

60

69,5

78,7

88,2

97,7

Min.

104,86

116,16

39,55

45,20

50,85

60,79

72,02

82,60

93,56

10,7

10,7

12,7

14

16

18,5

20

21

21

Series 2

5,6

7,3

7,3

7,3

10,7

10,7

10,7

14

14

14

7,3

-

-

-

-

-

-

-

-

-

Max. = nominal size

28

30

32

34

44

52

58

68

75

85

Min.

27,48

29,48

31,38

33,38

43,38

51,26

57,26

67,26

74,26

84,13

37,5

42,5

Min.

14

15

16

17

22

26

29

34

r

,..

35

40

50

60

70

80

90

110

s

Max. =

nominal size

34 4 )

36

41

46

55

65

75

85

95

105

Min.

33

35

40

45

53,8

63,1

73,1

82,8

92,8

102,8

Min.

21,58

23,58

25,58

27,58

35,5

41,5

47,5

55,4

61,4

66,4

Max.

22,42

24,42

26,42

28,42

mw

t w

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22

9,3

Min.

Approx. mass, in kg,

per 1 000 units

130

130

36,5

42,5

48,5

56,6

62,6

67,6

3

3

3

3

4

4

4

5

5

5

5)

165

229

310

577

958

1410

2100

2840

3910

Bracketed sizes should not be used.

See page 4 for 1), 3), 4) and 5).

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23,7

37,29

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Min.

Series 1

(0<0

o o o

Max.

Series 3

h

(MOO)

M48

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Page 5 DIN 917 : 2000-10

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4 Technical delivery conditions Table 2: Technical delivery conditions Steel

Material General requirements

Stainless steel

As specified in

Nonferrous metal

ISO 8992.

Tolerance

6H

Thread As specified in

Mechanical

properties

Property class 1) (material) As specified in

•

Limit deviations and geometrical tolerances

DIN 13-15.

For size M39: 5,6;

for larger sizes:

as agreed.

Acceptance inspection

CuZn 1)

DIN EN 20898-2 and DIN EN ISO 3506-2. DIN EI\J ISO 898-6.

Product grade

A

As specified in

DIN EN ISO 4759-1.

As processed.

Surface finish

For size M39:

A1-50; for larger sizes: as agreed.

DIN DIN DIN DIN DIN

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Plain

DIN EI\J 28839.

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Plain

EN ISO 4042 applies with regard to electroplating. EN ISO 10683 applies with regard to zinc flake coatings. 267-10 applies with regard to hot-dip galvanizing.

267-2 applies with regard to surface roughness.

EN 493 applies with regard to surface discontinuities.

DIN EN ISO 3269 applies with regard to acceptance inspec­ tion.

1) The use of other materials or property classes or of a particular grade of material (e.g. CU3 copper-zinc alloy) shall be subject to agreement.

5

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Designation

Designation of a size M8 cap nut of property class 6:

Nut 01 N 917 - M8 - 6 The designation of sizes M1 0, M12, M14 and M22 nuts shall also include the width across flats. EXAMPLE: Designation of a size M12 cap nut of property class 6 and with a width across flats of 18 mm (SW18):

Nut 0IN917-M12-8W18-6 If cap nuts for thread sizes up to M1 0 are to be supplied with thread undercut, the symbol Ri shall be included in the designation. EXAMPLE:

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l\Jut DIN 917 - M8 - Ri - 6

The DIN 4000-2 -7.1 tabular layout of article characteristics shall apply to nuts covered in this standard.

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