Thread Specifications

Metric ISO Thread Specifications

Size

Pitch

mm

 

Outside-

D1 mm

Inside-

D2 mm

Thru hole

mm

M 12 x 1,5

1,5

12

10,13

12,2

M 16 x 1,5

1,5

16

14,13

16,2

M 20 x 1,5

1,5

20

18,13

20,2

M 25 x 1,5

1,5

25

23,13

25,2

M 32 x 1,5

1,5

32

30,13

32,2

M 40 x 1,5

1,5

40

38,13

40,2

M 50 x 1,5

1,5

50

48,13

50,2

M 63 x 1,5

1,5

63

61,13

63,2

PG Thread Specifications

Size

Pitch

mm

Outside-

D1 mm

Inside-

D2 mm

Thru hole
mm

PG 7

1,270

12,5

11,25

12,7

PG9

1,410

15,2

13,86

15,4

PG11

1,410

18,6

17,26

18,8

PG13,5

1,410

20,4

19,06

20,7

PG16

1,410

22,5

21,16

22,8

PG21

1,588

28,3

26,78

28,6

PG29

1,588

37,0

35,48

37,4

PG36

1,588

47,0

45,48

47,5

PG 42

1,588

54,0

52,48

54,5

PG48

1,588

59,3

57,78

59,8

NPT Thread Specifications

Size

Pitch

mm

Outside-

D1 mm

Number
of pitches

n

1/4" NPT

1,411

13,716

18

3/8" NPT

1,411

17,145

18

1/2" NPT

1,814

21,336

14

3/4" NPT

1,814

26,67

14

1" NPT

2,208

33,4

11 1/2

1 1/4" NPT

2,208

42,164

11 1/2

1 1/2" NPT

2,208

48,26

11 1/2

2" NPT

2,208

60,325

11 1/2

2 1/2" NPT

3,175

73,025

8

3" NPT

3,175

88,9

8

3 1/2" NPT

3,175

101,6

8

British G Thread Specifications

Size 

Pitch

mm

Outside-

D1 mm

Inside-

D2 mm

Thru hole
mm

G 1/4"

1,337

13,157

11,145

13,4

G 3/8"

1,337

16,662

14,950

17,0

G 1/2"

1,814

20,955

18,631

21,3

G 5/8"

1,814

26,441

24,117

26,8

G 1"

2,309

33,249

30,291

33,7

G 1 1/4"

2,309

41,910

38,952

42,4

G 1 1/2"

2,309

47,803

44,845

48,3

G 2"

2,390

59,614

56,656

60,2

G 2 1/2"

2,390

75,184

72,226

75,7

G 3"

2,309

87,884

84,956

88,5

G 3 1/2"

2,309

100,330

97,372

101,0

G 4"

2,309

113,030

110,072

114,0

Lokalizacje: HUMMEL AG

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