Table of Contents

RTJ Face Flange Dimensions & Tolerance

Nominal Pipe Size

Groove Dimensions

Diameter of Raised Portion K

150 PSI

300 PSI

400 PSI

600 PSI

900 PSI

1500 PSI

2500 PSI

Groove #

Pitch Dia

Depth

Width

Radius at Bottom

150 PSI

300 400 600 PSI

900 PSI

1500 PSI

2500 PSI

Depth

P

E

F

R

E

…

1/2

…

1/2

…

R11

1-11/32

7/32

9/32

1/32

…

2

…

7/32

…

1/2

…

12

1-9/16

1/4

11/32

1/32

…

2-3/8

…

1/4

…

3/4

…

3/4

…

1/2

13

1-11/16

1/4

11/32

1/32

…

2-1/2

…

2-9/16

1/4

…

3/4

…

14

1-3/4

1/4

11/32

1/32

…

2-5/8

…

1/4

1

…

15

1-7/8

1/4

11/32

1/32

2-1/2

…

1/4

…

1

…

1

…

1

3/4

16

2

1/4

11/32

1/32

…

2-3/4

2-13/16

2-7/8

1/4

1-1/4

…

17

2-1/4

1/4

11/32

1/32

2-7/8

…

1/4

…

1-1/4

…

1-1/4

…

1-1/4

1

18

2-3/8

1/4

11/32

1/32

…

3-1/8

3-3/16

3-1/4

1/4

1-1/2

…

19

2-9/16

1/4

11/32

1/32

3-1/4

…

1/4

…

1-1/2

…

1-1/2

…

1-1/2

…

20

2-11/16

1/4

11/32

1/32

…

3-9/16

3-5/8

…

1/4

…

1-1/4

21

2-27/32

5/16

15/32

1/32

…

4

5/16

2

…

22

3-1/4

1/4

11/32

1/32

4

…

1/4

…

2

…

2

…

1-1/2

23

3-1/4

5/16

15/32

1/32

…

4-1/4

…

4-1/2

5/16

…

2

…

24

3-3/4

5/16

15/32

1/32

…

4-7/8

…

5/16

2-1/2

…

25

4

1/4

11/32

1/32

4-3/4

…

1/4

…

2-/12

…

2-1/2

…

2

26

4

5/16

15/32

1/32

…

5

…

5-1/4

5/16

…

2-1/2

…

27

4-1/4

5/16

15/32

1/32

…

5-3/8

…

5/16

…

2-1/2

28

4-3/8

3/8

17/32

1/16

…

5-7/8

3/8

3

…

29

4-1/2

1/4

11/32

1/32

5-1/4

…

1/4

…

30

4-5/8

5/16

15/32

1/32

…

5/16

…

3

…

3

…

31

4-7/8

5/16

15/32

1/32

…

5-3/4

6-1/8

…

5/16

…

3

32

5

3/8

17/32

1/16

…

6-5/8

3/8

3-1/2

…

33

5-3/16

1/4

11/32

1/32

6-1/16

…

1/4

…

3-1/2

…

3-1/2

…

34

5-3/16

5/16

15/32

1/32

…

6-1/4

…

5/16

…

3

…

35

5-3/8

5/16

15/32

1/32

…

6-5/8

…

5/16

4

…

36

5-7/8

1/4

11/32

1/32

6-3/4

…

1/4

…

4

…

37

5-7/8

5/16

15/32

1/32

…

6-7/8

7-1/8

…

5/16

…

4

38

6-3/16

7/16

21/32

1/16

…

8

7/16

…

4

…

39

6-3/8

5/16

15/32

1/32

…

7-5/8

…

5/16

5

…

40

6-3/4

1/4

11/32

1/32

7-5/8

…

1/4

…

5

…

41

7-1/8

5/16

15/32

1/32

…

8-1/4

8-1/2

…

5/16

…

5

42

7-1/2

1/2

25/32

1/16

…

9-1/2

1/2

6

…

43

7-5/8

1/4

11/32

1/32

8-5/8

…

1/4

…

5

…

44

7-5/8

5/16

15/32

1/32

…

9

…

5/16

…

6

…

45

8-5/16

5/16

15/32

1/32

…

9-1/2

…

5/16

Nominal Pipe Size

Groove Dimensions

Diameter of Raised Portion K

150 PSI

300 PSI

400 PSI

600 PSI

900 PSI

1500 PSI

2500 PSI

Groove #

Pitch Dia

Depth

Width

Radius at Bottom

150 PSI

300 400 600 PSI

900 PSI

1500 PSI

2500 PSI

Depth

P

E

F

R

E

…

6

…

R46

8-5/16

3/8

17/32

1/16

…

9-3/4

…

3/8

…

6

47

9

1/2

25/32

1/16

…

11

1/2

8

…

48

9-3/4

1/4

11/32

1/32

10-3/4

…

1/4

…

8

…

49

10-5/8

5/16

15/32

1/32

…

11-7/8

12-1/8

…

5/16

…

8

…

50

10-5/8

7/16

21/32

1/16

…

12-1/2

…

7/16

…

8

51

11

9/16

29/32

1/16

…

13-3/8

9/16

10

…

52

12

1/4

11/32

1/32

13

…

1/4

…

10

…

53

12-3/4

5/16

15/32

1/32

…

14

14-1/4

…

5/16

…

10

…

54

12-3/4

7/16

21/32

1/16

…

14-5/8

…

7/16

…

10

55

13-1/2

11/16

1-3/16

3/32

…

16-3/4

11/16

12

…

56

15

1/4

11/32

1/32

16

…

1/4

…

12

…

57

15

5/16

15/32

1/32

…

16-1/4

16-1/2

…

5/16

…

12

…

58

15

9/16

29/32

1/16

…

17-1/4

…

9/16

14

…

59

15-5/8

1/4

11/32

1/32

16-3/4

…

1/4

…

12

60

16

11/16

1-5/16

3/32

…

19-1/2

11/16

…

14

…

61

16-1/2

5/16

15/32

1/32

…

18

…

5/16

…

14

…

62

16-1/2

7/16

21/32

1/16

…

18-3/8

…

7/16

…

14

…

63

16-1/2

5/8

1-1/16

3/32

…

19-1/4

…

5/8

16

…

64

17-7/8

1/4

11/32

1/32

19

…

1/4

…

16

…

65

18-1/2

5/16

15/32

1/32

…

20

…

5/16

…

16

…

66

18-1/2

7/16

21/32

1/16

…

20-5/8

…

7/16

…

16

…

67

18-1/2

11/16

1-3/16

3/32

…

21-1/2

…

11/16

18

…

68

20-3/8

1/4

11/32

1/32

21-1/2

…

1/4

…

18

…

69

21

5/16

15/32

1/32

…

22-5/8

…

5/16

…

18

…

70

21

1/2

25/32

1/16

…

23-3/8

…

1/2

…

18

…

71

21

11/16

1-3/16

3/32

…

24-1/8

…

11/16

20

…

20

…

72

22

1/4

11/33

1/32

23-1/2

…

1/4

…

20

…

20

…

73

23

3/8

17/32

1/16

…

25

…

3/8

…

20

…

74

23

1/2

25/32

1/16

…

25-1/2

…

1/2

…

20

…

75

23

11/16

1-5/16

3/32

…

–

26-1/2

…

11/16

24

…

76

26-1/2

1/4

11/32

1/32

28

…

1/4

…

24

…

77

27-1/4

7/16

21/32

1/16

…

29-1/2

…

7/16

…

24

…

78

27-1/4

5/8

1-1/16

3/32

…

30-3/8

…

5/8

…

24

…

79

27-1/4

13/16

17/16

3/32

…

31-1/4

…

13/16

Dimensional Tolerance

Threaded, Socket-Welding, Slip-On, Lap Joint, and Blind			Weld Neck
Outside Diameter (1)	when the O.D. is 24″ or less	�1/16″	Outside Diameter (1)	when the O.D. is 24″ or less	�1/16″
	when the O.D. is over 24″	�1/8″		when the O.D. is over 24″	�1/8″
Inside Diameter	Threaded	within limites on boring gauge	Inside Diameter	= 10″	�1/32″
	Socket-Welding, Slip-On and Lap-Joint	= 10″+1/32″, -0″ =12″+1/16″,-0″		12″ through 18″	�1/16″
				= 20″	+1/8″, -1/16″
Outside Diameter of Hub (1)	= 12″	+3/32″, -1/16″	Diameter of Contact Face	1/16″ Raised Face	�1/32″
	= 14″	�1/8″		1/4″ Raised Face Tongue & Groove Male, Famale	�1/64″
Diameter of Contact Face	1/16″ Raised Face	�1/32″	Diameter of Hub at Base (1)	when Hub Base is 24″ or less	+1/16″
	1/4″ Raised Face Tongue & Groove Male, Famale	�1/64″		when Hub Base is over 24″	�1/8″
Diameter of Counterbore	Same as for Inside Diameter		Diameter of Hub at Point of Welding	NPS = 5″	+3/32″, -1/32″
				NPS = 6″	+5/32″. -1/32″
Drilling	Bolt Circle	�1/16″	Drilling	Bolt Circle	�1/16″
	Bolt Hole Spacing	�1/32″		Bolt Hole Spacing	�1/32″
	Concentricity of Bolt Circle with Respect to Facing	NPS = 2 1/2″, 1/32″ max		Concentricity of Bolt Circle with Respect to Facing	NPS = 2 1/2″ 1/32″ max
		NPS = 3″, 1/16″ max			NPS = 3″ 1/16″ max
Thickness	= 18″	+1/8″, -0″	Thickness	= 18″	+1/8″, -0″
	= 20″	+3/16″,-0″		= 20″	+3/16″,-0″
Length Through the Hub (1)	= 18″	+1/8″, -1/32″	Length Through the Hub	NPS = 4″	�1/16″
				5 = NPS = 10″	+1/16″, -1/8
	= 20″	+3/16″, -1/16″		= 12″	+1/8″, -3/16