ANSI/ASME B16.5 Threaded Flange Dimensions

Threaded Flanges are also known as screwed flange, and it is having a thread inside the flange bore which fits on the pipe with matching male thread on the pipe.
This type of joint connection is Speedy and simple but not suitable for high presser and temperature applications. Threaded Flanges are mostly used in utility services such as air and water.
Threaded (Screwed) flange is similar to the Slip-On flange, but the bore is threaded. Its chief merit is that it can be assembled withour welding, explaining its use in low pressure services at ordinary atmospheric temperatures, and in highly explosive areas where welding create a hazard.
Threaded pipe flanges are suitable only for low-pressure systems in which there are no thermal cycles that could cause the threads to loosen. Threaded pipe flange is supplied with a tapered internal thread that the pipe screws into.

Threaded flange find applications in areas in which hot work (welding, burning, and grinding) is undesirable.

Threaded Flange Dimensions & Approximate Masses

20190202074349 72272 - ANSI/ASME B16.5 Threaded Flange Dimensions

Raised Face & Flat Face

20190202074349 72272 - ANSI/ASME B16.5 Threaded Flange Dimensions

Ring Type Joint

ANSI Class 150, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202074744 27526 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 3 1/2 1 3/8 7/16 1 3/16 5/8 5/8 4 5/8 2 3/8 2
3/4 3 7/8 1 11/16 1/2 1 1/2 5/8 5/8 4 5/8 2 3/4 2
1 4 1/4 2 9/16 1 15/16 11/16 11/16 4 5/8 3 1/8 2
1 1/4 4 5/8 2 1/2 5/8 2 5/16 13/16 13/16 4 5/8 3 1/2 3
1 1/2 5 2 7/8 11/16 2 9/16 7/8 7/8 4 5/8 3 7/8 3
2 6 3 5/8 3/4 3 7/16 1 1 4 3/4 4 3/4 5
2 1/2 7 4 1/8 7/8 3 9/16 1 1/8 1 1/8 4 3/4 5 1/2 7
3 7 1/2 5 15/16 4 1/4 1 3/16 1 3/16 4 3/4 6 8
3 1/2 8 1/2 5 1/2 15/16 4 13/16 1 1/4 1 1/4 8 3/4 7 11
4 9 6 3/16 15/16 5 5/16 1 5/16 1 5/16 8 3/4 7 1/2 13
5 10 7 5/16 15/16 6 7/16 1 7/16 1 7/16 8 7/8 8 1/2 15
6 11 8 1/2 1 7 9/16 1 9/16 1 9/16 8 7/8 9 1/2 19
8 13 1/2 10 5/8 1 1/8 9 11/16 1 3/4 1 3/4 8 7/8 11 3/4 30
10 16 12 3/4 1 3/16 12 1 15/16 1 15/16 12 1 14 1/4 43
12 19 15 1 1/4 14 3/8 2 3/16 2 3/16 12 1 17 64
14 21 16 1/4 1 3/8 15 3/4 2 1/4 2 1/4 12 1 1/8 18 3/4 85
16 23 1/2 18 1/2 1 7/16 18 2 1/2 2 1/2 16 1 1/8 21 1/4 93
18 25 21 1 9/16 19 7/8 2 11/16 2 11/16 16 1 1/4 22 3/4 120
20 27 1/2 23 1 11/16 22 2 7/8 2 7/8 20 1 1/4 25 155
22 29 1/2 25 1/4 1 13/16 24 3 1/8 3 1/8 20 1 3/8 27 1/4 159
24 32 27 1/4 1 7/8 26 1/8 3 1/4 3 1/4 20 1 3/8 29 1/2 210

ANSI Class 300, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202075452 16326 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 3 1/2 1 3/8 7/16 1 3/16 5/8 5/8 4 5/8 2 3/8 2
3/4 3 7/8 1 11/16 1/2 1 1/2 5/8 5/8 4 5/8 2 3/4 2
1 4 1/4 2 9/16 1 15/16 11/16 11/16 4 5/8 3 1/8 2
1 1/4 4 5/8 2 1/2 5/8 2 5/16 13/16 13/16 4 5/8 3 1/2 3
1 1/2 5 2 7/8 11/16 2 9/16 7/8 7/8 4 5/8 3 7/8 3
2 6 3 5/8 3/4 3 7/16 1 1 4 3/4 4 3/4 5
2 1/2 7 4 1/8 7/8 3 9/16 1 1/8 1 1/8 4 3/4 5 1/2 7
3 7 1/2 5 15/16 4 1/4 1 3/16 1 3/16 4 3/4 6 8
3 1/2 8 1/2 5 1/2 15/16 4 13/16 1 1/4 1 1/4 8 3/4 7 11
4 9 6 3/16 15/16 5 5/16 1 5/16 1 5/16 8 3/4 7 1/2 13
5 10 7 5/16 15/16 6 7/16 1 7/16 1 7/16 8 7/8 8 1/2 15
6 11 8 1/2 1 7 9/16 1 9/16 1 9/16 8 7/8 9 1/2 19
8 13 1/2 10 5/8 1 1/8 9 11/16 1 3/4 1 3/4 8 7/8 11 3/4 30
10 16 12 3/4 1 3/16 12 1 15/16 1 15/16 12 1 14 1/4 43
12 19 15 1 1/4 14 3/8 2 3/16 2 3/16 12 1 17 64
14 21 16 1/4 1 3/8 15 3/4 2 1/4 2 1/4 12 1 1/8 18 3/4 85
16 23 1/2 18 1/2 1 7/16 18 2 1/2 2 1/2 16 1 1/8 21 1/4 93
18 25 21 1 9/16 19 7/8 2 11/16 2 11/16 16 1 1/4 22 3/4 120
20 27 1/2 23 1 11/16 22 2 7/8 2 7/8 20 1 1/4 25 155
22 29 1/2 25 1/4 1 13/16 24 3 1/8 3 1/8 20 1 3/8 27 1/4 159
24 32 27 1/4 1 7/8 26 1/8 3 1/4 3 1/4 20 1 3/8 29 1/2 210

ANSI Class 400, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202075631 23842 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter of Bore

S

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 3 3/4 1 3/8 9/16 1 1/2 7/8 5/8 0.93 4 5/8 2 5/8 3
3/4 4 5/8 1 11/16 5/8 1 7/8 1 5/8 1.14 4 3/4 3 1/4 3
1 4 7/8 2 11/16 2 1/8 1 1/16 11/16 1.41 4 3/4 3 1/2 4
1 1/4 5 1/4 2 1/2 13/16 2 1/2 1 1/8 13/16 1.75 4 3/4 3 7/8 6
1 1/2 6 1/8 2 7/8 7/8 2 3/4 1 1/4 7/8 1.99 4 7/8 4 1/2 7
2 6 1/2 3 5/8 1 3 5/16 1 7/16 1 1/8 2.50 8 3/4 5 9
2 1/2 7 1/2 4 1/8 1 1/8 3 15/16 1 5/8 1 1/4 3.00 8 7/8 5 7/8 13
3 8 1/4 5 1 1/4 4 5/8 1 13/16 1 3/8 3.63 8 7/8 6 5/8 16
3 1/2 9 5 1/2 1 3/8 5 1/4 1 15/16 1 9/16 4.13 8 1 7 1/4 21
4 10 6 3/16 1 3/8 5 3/4 2 1 7/16 4.63 8 1 7 7/8 26
5 11 7 5/16 1 1/2 7 2 1/8 1 11/16 5.69 8 1 9 1/4 31
6 12 1/2 8 1/2 1 5/8 8 1/8 2 1/4 1 13/16 6.75 12 1 10 5/8 44
8 15 10 5/8 1 7/8 10 1/4 2 11/16 2 8.75 12 1 1/8 13 67
10 17 1/2 12 3/4 2 1/8 12 5/8 2 7/8 2 3/16 10.88 16 1 1/4 15 1/4 91
12 20 1/2 15 2 1/4 14 3/4 3 1/8 2 3/8 12.94 16 1 3/8 17 3/4 129
14 23 16 1/4 2 3/8 16 3/4 3 5/16 2 1/2 14.19 20 1 3/8 20 1/4 191
16 25 1/2 18 1/2 2 1/2 19 3 11/16 2 11/16 16.19 20 1 1/2 22 1/2 253
18 28 21 2 5/8 21 3 7/8 2 3/4 18.19 24 1 1/2 24 3/4 310
20 30 1/2 23 2 3/4 23 1/8 4 2 7/8 20.19 24 1 5/8 27 378
22 33 25 1/4 2 7/8 25 1/4 4 1/4 3 1/16 22.19 24 1 3/4 29 1/4 464
24 36 27 1/4 3 27 5/8 4 1/2 3 1/4 24.19 24 1 7/8 32 539

ANSI Class 600, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202075758 89094 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter of Bore

S

Number of Bolt Holes

 NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 3 3/4 1 3/8 9/16 1 1/2 7/8 5/8 0.93 4 5/8 2 5/8 3
3/4 4 5/8 1 11/16 5/8 1 7/8 1 5/8 1.14 4 3/4 3 1/4 3
1 4 7/8 2 11/16 2 1/8 1 1/16 11/16 1.41 4 3/4 3 1/2 4
1 1/4 5 1/4 2 1/2 13/16 2 1/2 1 1/8 13/16 1.75 4 3/4 3 7/8 6
1 1/2 6 1/8 2 7/8 7/8 2 3/4 1 1/4 7/8 1.99 4 7/8 4 1/2 7
2 6 1/2 3 5/8 1 3 5/16 1 7/16 1 1/8 2.50 8 3/4 5 9
2 1/2 7 1/2 4 1/8 1 1/8 3 15/16 1 5/8 1 1/4 3.00 8 7/8 5 7/8 13
3 8 1/4 5 1 1/4 4 5/8 1 13/16 1 3/8 3.63 8 7/8 6 5/8 16
3 1/2 9 5 1/2 1 3/8 5 1/4 1 15/16 1 9/16 4.13 8 1 7 1/4 21
4 10 3/4 6 3/16 1 1/2 6 2 1/8 1 5/8 4.63 8 1 8 1/2 37
5 13 7 5/16 1 3/4 7 7/16 2 3/8 1 7/8 5.69 8 1 1/8 10 1/2 63
6 14 8 1/2 1 7/8 8 3/4 2 5/8 2 6.75 12 1 1/8 11 1/2 80
8 16 1/2 10 5/8 2 3/16 10 3/4 3 2 1/4 8.75 12 1 1/4 13 3/4 115
10 20 12 3/4 2 1/2 13 1/2 3 3/8 2 9/16 10.88 16 1 3/8 17 177
12 22 15 2 5/8 15 3/4 3 5/8 2 3/4 12.94 20 1 3/8 19 1/4 215
14 23 3/4 16 1/4 2 3/4 17 3 11/16 2 7/8 14.19 20 1 1/2 20 3/4 259
16 27 18 1/2 3 19 1/2 4 3/16 3 1/16 16.19 20 1 5/8 23 3/4 366
18 29 1/4 21 3 1/4 21 1/2 4 5/8 3 1/8 18.19 20 1 3/4 25 3/4 476
20 32 23 3 1/2 24 5 3 1/4 20.19 24 1 3/4 28 1/2 612
22 34 1/4 25 1/4 3 3/4 26 1/2 5 1/4 3 7/16 22.19 24 1 7/8 30 5/8 643
24 37 27 1/4 4 28 1/4 5 1/2 3 5/8 24.19 24 2 33 876

ANSI Class 900, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202080112 81226 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter of Bore

S

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 4 3/4 1 3/8 7/8 1 1/2 1 1/4 7/8 0.93 4 7/8 3 1/4 9
3/4 5 1/8 1 11/16 1 1 3/4 1 3/8 1 1.14 4 7/8 3 1/2 9
1 5 7/8 2 1 1/8 2 1/16 1 5/8 1 1/8 1.41 4 1 4 9
1 1/4 6 1/4 2 1/2 1 1/8 2 1/2 1 5/8 1 3/16 1.75 4 1 4 3/8 10
1 1/2 7 2 7/8 1 1/4 2 3/4 1 3/4 1 1/4 1.99 4 1 1/8 4 7/8 14
2 8 1/2 3 5/8 1 1/2 4 1/8 2 1/4 1 1/2 2.50 8 1 6 1/2 25
2 1/2 9 5/8 4 1/8 1 5/8 4 7/8 2 1/2 1 7/8 3.00 8 1 1/8 7 1/2 36
3 9 1/2 5 1 1/2 5 2 1/8 1 5/8 3.63 8 1 7 1/2 31
3 1/2
4 11 1/2 6 3/16 1 3/4 6 1/4 2 3/4 1 7/8 4.63 8 1 1/4 9 1/4 53
5 13 3/4 7 5/16 2 7 1/2 3 1/8 2 1/8 5.69 8 1 3/8 11 83
6 15 8 1/2 2 3/16 9 1/4 3 3/8 2 1/4 6.75 12 1 1/4 12 1/2 108
8 18 1/2 10 5/8 2 1/2 11 3/4 4 2 1/2 8.75 12 1 1/2 15 1/2 172
10 21 1/2 12 3/4 2 3/4 14 1/2 4 1/4 2 13/16 10.88 16 1 1/2 18 1/2 245
12 24 15 3 1/8 16 1/2 4 5/8 3 12.94 20 1 1/2 21 326
14 25 1/4 16 1/4 3 3/8 17 3/4 5 1/8 3 1/4 14.19 20 1 5/8 22 380
16 27 3/4 18 1/2 3 1/2 20 5 1/4 3 3/8 16.19 20 1 3/4 24 1/4 459
18 31 21 4 22 1/4 6 3 1/2 18.19 20 2 27 647
20 33 3/4 23 4 1/4 24 1/2 6 1/4 3 5/8 20.19 20 2 1/8 29 1/2 792
22
24 41 27 1/4 5 1/2 29 1/2 8 4 24.19 20 2 5/8 35 1/2 1480

ANSI Class 1500, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202080306 85001 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter of Bore

S

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 4 3/4 1 3/8 7/8 1 1/2 1 1/4 7/8 0.93 4 7/8 3 1/4 9
3/4 5 1/8 1 11/16 1 1 3/4 1 3/8 1 1.14 4 7/8 3 1/2 9
1 5 7/8 2 1 1/8 2 1/16 1 5/8 1 1/8 1.41 4 1 4 9
1 1/4 6 1/4 2 1/2 1 1/8 2 1/2 1 5/8 1 3/16 1.75 4 1 4 3/8 10
1 1/2 7 2 7/8 1 1/4 2 3/4 1 3/4 1 1/4 1.99 4 1 1/8 4 7/8 14
2 8 1/2 3 5/8 1 1/2 4 1/8 2 1/4 1 1/2 2.50 8 1 6 1/2 25
2 1/2 9 5/8 4 1/8 1 5/8 4 7/8 2 1/2 1 7/8 3.00 8 1 1/8 7 1/2 36
3 10 1/2 5 1 7/8 5 1/4 2 7/8 2 3.63 8 1 1/4 8 48
3 1/2
4 12 1/4 6 3/16 2 1/8 6 3/8 3 9/16 2 1/4 4.63 8 1 3/8 9 1/2 73
5 14 3/4 7 5/16 2 7/8 7 3/4 4 1/8 2 1/2 5.69 8 1 5/8 11 1/2 132
6 15 1/2 8 1/2 3 1/4 9 4 11/16 2 3/4 6.75 12 1 1/2 12 1/2 164
8 19 10 5/8 3 5/8 11 1/2 5 5/8 3 8.75 12 1 3/4 15 1/2 258
10 23 12 3/4 4 1/4 14 1/2 6 1/4 3 5/16 10.88 12 2 19 436
12 26 1/2 15 4 7/8 17 3/4 7 1/8 3 5/8 12.94 16 2 1/8 22 1/2 667

ANSI Class 2500, B16.5 (in), Raised Face & Flat Face, Threaded Flange

20190202080429 75978 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Diameter of Raised Face

B

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter of Bore

S

Number of Bolt Holes

NBH

Diameter of Bolt Holes

DBH

Bolt Circle Diameter

P

Approx. Weight

(lb)

AW

1/2 5 1/4 1 3/8 1 3/16 1 11/16 1 9/16 1 1/8 0.93 4 7/8 3 1/2 7
3/4 5 1/2 1 11/16 1 1/4 2 1 11/16 1 1/4 1.14 4 7/8 3 3/4 9
1 6 1/4 2 1 3/8 2 1/4 1 7/8 1 3/8 1.41 4 1 4 1/4 12
1 1/4 7 1/4 2 1/2 1 1/2 2 7/8 2 1/16 1 1/2 1.75 4 1 1/8 5 1/8 18
1 1/2 8 2 7/8 1 3/4 3 1/8 2 3/8 1 3/4 1.99 4 1 1/4 5 3/4 25
2 9 1/4 3 5/8 2 3 3/4 2 3/4 2 2.50 8 1 1/8 6 3/4 38
2 1/2 10 1/2 4 1/8 2 1/4 4 1/2 3 1/8 2 1/4 3.00 8 1 1/4 7 3/4 55
3 12 5 2 5/8 5 1/4 3 5/8 2 1/2 3.63 8 1 3/8 9 83
3 1/2
4 14 6 3/16 3 6 1/2 4 1/4 2 3/4 4.63 8 1 5/8 10 3/4 127
5 16 1/2 7 5/16 3 5/8 8 5 1/8 3 5.69 8 1 7/8 12 3/4 210
6 19 8 1/2 4 1/4 9 1/4 6 3 1/4 6.75 8 2 1/8 14 1/2 323
8 21 3/4 10 5/8 5 12 7 3 3/4 8.75 12 2 1/8 17 1/4 485
10 26 1/2 12 3/4 6 1/2 14 3/4 9 4 1/4 10.88 12 2 5/8 21 1/4 925
12 30 15 7 1/4 17 3/8 10 4 3/4 12.94 12 2 7/8 24 3/8 1300

ANSI Class 150, B16.5 RTJ (in), Threaded Flange

20190202080754 21466 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Bore

E

Diameter of Hub at Base

J

Length of Hub

L

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2
3/4
1 4 1/4 1/2 1 15/16 11/16 11/16 2 1/2 1 7/8 11/32 1/4 4 5/8 3 1/8
1 1/4 4 5/8 9/16 2 5/16 13/16 13/16 2 7/8 2 1/4 11/32 1/4 4 5/8 3 1/2
1 1/2 5 5/8 2 9/16 7/8 7/8 3 1/4 2 9/16 11/32 1/4 4 5/8 3 7/8
2 6 11/16 3 1/16 1 1 4 3 1/4 11/32 1/4 4 3/4 4 3/4
2 1/2 7 13/16 3 9/16 1 1/8 1 1/8 4 3/4 4 11/32 1/4 4 3/4 5 1/2
3 7 1/2 7/8 4 1/4 1 3/16 1 3/16 5 1/4 4 1/2 11/32 1/4 4 3/4 6
3 1/2 8 1/2 7/8 4 13/16 1 1/4 1 1/4 6 1/16 5 3/16 11/32 1/4 8 3/4 7
4 9 7/8 5 5/16 1 5/16 1 5/16 6 3/4 5 7/8 11/32 1/4 8 3/4 7 1/2
5 10 7/8 6 7/16 1 7/16 1 7/16 7 5/8 6 3/4 11/32 1/4 8 7/8 8 1/2
6 11 15/16 7 9/16 1 9/16 1 9/16 8 5/8 7 5/8 11/32 1/4 8 7/8 9 1/2
8 13 1/2 1 1/16 9 11/16 1 3/4 1 3/4 10 3/4 9 3/4 11/32 1/4 8 7/8 11 3/4
10 16 1 1/8 12 1 15/16 1 15/16 13 12 11/32 1/4 12 1 14 1/4
12 19 1 3/16 14 3/8 2 3/16 2 3/16 16 15 11/32 1/4 12 1 17
14 21 1 5/16 15 3/4 2 1/4 2 1/4 16 3/4 15 5/8 11/32 1/4 12 1 1/8 18 3/4
16 23 1/2 1 3/8 18 2 1/2 2 1/2 19 17 7/8 11/32 1/4 16 1 1/8 21 1/4
18 25 1 1/2 19 7/8 2 11/16 2 11/16 21 1/2 20 3/8 11/32 1/4 16 1 1/4 22 3/4
20 27 1/2 1 5/8 22 2 7/8 2 7/8 23 1/2 22 11/32 1/4 20 1 1/4 25
22 29 1/2 1 3/4 24 3 1/8 3 1/8 25 1/2 24 1/4 11/32 1/4 20 1 3/8 27 1/4
24 32 1 13/16 26 1/8 3 1/4 3 1/4 28 26 1/2 11/32 1/4 20 1 3/8 29 1/2

ANSI Class 300, B16.5 RTJ (in), Threaded Flange

20190202081003 42041 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 3 3/4 1/2 1 1/2 7/8 5/8 0.93 2 1 11/32 9/32 7/32 4 5/8 2 5/8
3/4 4 5/8 9/16 1 7/8 1 5/8 1.14 2 1/2 1 11/16 11/32 1/4 4 3/4 3 1/4
1 4 7/8 5/8 2 1/8 1 1/16 11/16 1.41 2 3/4 2 11/32 1/4 4 3/4 3 1/2
1 1/4 5 1/4 11/16 2 1/2 1 1/16 13/16 1.75 3 1/8 2 3/8 11/32 1/4 4 3/4 3 7/8
1 1/2 6 1/8 3/4 2 3/4 1 3/16 7/8 1.99 3 9/16 2 11/16 11/32 1/4 4 7/8 4 1/2
2 6 1/2 13/16 3 5/16 1 5/16 1 1/8 2.50 4 1/4 3 1/4 15/32 5/16 8 3/4 5
2 1/2 7 1/2 15/16 3 15/16 1 1/2 1 1/4 3.00 5 4 15/32 5/16 8 7/8 5 7/8
3 8 1/4 1 1/16 4 5/8 1 11/16 1 1/4 3.63 5 3/4 4 7/8 15/32 5/16 8 7/8 6 5/8
3 1/2 9 1 1/8 5 1/4 1 3/4 1 7/16 4.13 6 1/4 5 3/16 15/32 5/16 8 7/8 7 1/4
4 10 1 3/16 5 3/4 1 7/8 1 7/16 4.63 6 7/8 5 7/8 15/32 5/16 8 7/8 7 7/8
5 11 1 5/16 7 2 1 11/16 5.69 8 1/4 7 1/8 15/32 5/16 8 7/8 9 1/4
6 12 1/2 1 3/8 8 1/8 2 1/16 1 13/16 6.75 9 1/2 8 5/16 15/32 5/16 12 7/8 10 5/8
8 15 1 9/16 10 1/4 2 7/16 2 8.75 11 7/8 10 5/8 15/32 5/16 12 1 13
10 17 1/2 1 13/16 12 5/8 2 5/8 2 3/16 10.88 14 12 3/4 15/32 5/16 16 1 1/8 15 1/4
12 20 1/2 1 15/16 14 3/4 2 7/8 2 3/8 12.94 16 1/4 15 15/32 5/16 16 1 1/4 17 3/4
14 23 2 1/16 16 3/4 3 2 1/2 14.19 18 16 1/2 15/32 5/16 20 1 1/4 20 1/4
16 25 1/2 2 3/16 19 3 1/4 2 11/16 16.19 20 18 1/2 15/32 5/16 20 1 3/8 22 1/2
18 28 2 5/16 21 3 1/2 2 3/4 18.19 22 5/8 21 15/32 5/16 24 1 3/8 24 3/4
20 30 1/2 2 7/16 23 1/8 3 3/4 2 7/8 20.19 25 23 17/32 3/8 24 1 3/8 27
22 33 2 9/16 25 1/4 4 3 1/16 22.19 27 25 19/32 7/16 24 1 5/8 29 1/4
24 36 2 11/16 27 5/8 4 3/16 3 1/4 24.19 29 1/2 27 1/4 21/32 7/16 24 1 5/8 32

ANSI Class 400, B16.5 RTJ (in), Threaded Flange

20190202081211 82685 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 3 3/4 9/16 1 1/2 7/8 5/8 0.93 2 1 11/32 9/32 7/32 4 5/8 2 5/8
3/4 4 5/8 5/8 1 7/8 1 5/8 1.14 2 1/2 1 11/16 11/32 1/4 4 3/4 3 1/4
1 4 7/8 11/16 2 1/8 1 1/16 11/16 1.41 2 3/4 2 11/32 1/4 4 3/4 3 1/2
1 1/4 5 1/4 13/16 2 1/2 1 1/8 13/16 1.75 3 1/8 2 3/8 11/32 1/4 4 3/4 3 7/8
1 1/2 6 1/8 7/8 2 3/4 1 1/4 7/8 1.99 3 9/16 2 11/16 11/32 1/4 4 7/8 4 1/2
2 6 1/2 1 3 5/16 1 7/16 1 1/8 2.50 4 1/4 3 1/4 15/32 5/16 8 3/4 5
2 1/2 7 1/2 1 1/8 3 15/16 1 5/8 1 1/4 3.00 5 4 15/32 5/16 8 7/8 5 7/8
3 8 1/4 1 1/4 4 5/8 1 13/16 1 3/8 3.63 5 3/4 4 7/8 15/32 5/16 8 7/8 6 5/8
3 1/2 9 1 3/8 5 1/4 1 15/16 1 9/16 4.13 6 1/4 5 3/16 15/32 5/16 8 1 7 1/4
4 10 1 3/8 5 3/4 2 1 7/16 4.63 6 7/8 5 7/8 15/32 5/16 8 1 7 7/8
5 11 1 1/2 7 2 1/8 1 11/16 5.69 8 1/4 7 1/8 15/32 5/16 8 1 9 1/4
6 12 1/2 1 5/8 8 1/8 2 1/4 1 13/16 6.75 9 1/2 8 5/16 15/32 5/16 12 1 10 5/8
8 15 1 7/8 10 1/4 2 11/16 2 8.75 11 7/8 10 5/8 15/32 5/16 12 1 1/8 13
10 17 1/2 2 1/8 12 5/8 2 7/8 2 3/16 10.88 14 12 3/4 15/32 5/16 16 1 1/4 15 1/4
12 20 1/2 2 1/4 14 3/4 3 1/8 2 3/8 12.94 16 1/4 15 15/32 5/16 16 1 3/8 17 3/4
14 23 2 3/8 16 3/4 3 5/16 2 1/2 14.19 18 16 1/2 15/32 5/16 20 1 3/8 20 1/4
16 25 1/2 2 1/2 19 3 11/16 2 11/16 16.19 20 18 1/2 15/32 5/16 20 1 1/2 22 1/2
18 28 2 5/8 21 3 7/8 2 3/4 18.19 22 5/8 21 15/32 5/16 24 1 1/2 24 3/4
20 30 1/2 2 3/4 23 1/8 4 2 7/8 20.19 25 23 17/32 3/8 24 1 5/8 27
22 33 2 7/8 25 1/4 4 1/4 3 1/16 22.19 27 25 19/32 7/16 24 1 3/4 29 1/4
24 36 3 27 5/8 4 1/2 3 1/4 24.19 29 1/2 27 1/4 21/32 7/16 24 1 7/8 32

ANSI Class 600, B16.5 RTJ (in), Threaded Flange

20190202081406 66892 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 3 3/4 9/16 1 1/2 7/8 5/8 0.93 2 1 11/32 9/32 7/32 4 5/8 2 5/8
3/4 4 5/8 5/8 1 7/8 1 5/8 1.14 2 1/2 1 11/16 11/32 1/4 4 3/4 3 1/4
1 4 7/8 11/16 2 1/8 1 1/16 11/16 1.41 2 3/4 2 11/32 1/4 4 3/4 3 1/2
1 1/4 5 1/4 13/16 2 1/2 1 1/8 13/16 1.75 3 1/8 2 3/8 11/32 1/4 4 3/4 3 7/8
1 1/2 6 1/8 7/8 2 3/4 1 1/4 7/8 1.99 3 9/16 2 11/16 11/32 1/4 4 7/8 4 1/2
2 6 1/2 1 3 5/16 1 7/16 1 1/8 2.50 4 1/4 3 1/4 15/32 5/16 8 3/4 5
2 1/2 7 1/2 1 1/8 3 15/16 1 5/8 1 1/4 3.00 5 4 15/32 5/16 8 7/8 5 7/8
3 8 1/4 1 1/4 4 5/8 1 13/16 1 3/8 3.63 5 3/4 4 7/8 15/32 5/16 8 7/8 6 5/8
3 1/2 9 1 3/8 5 1/4 1 15/16 1 9/16 4.13 6 1/4 5 3/16 15/32 5/16 8 1 7 1/4
4 10 3/4 1 1/2 6 2 1/8 1 5/8 4.63 6 7/8 5 7/8 15/32 5/16 8 1 8 1/2
5 13 1 3/4 7 7/16 2 3/8 1 7/8 5.69 8 1/4 7 1/8 15/32 5/16 8 1 1/8 10 1/2
6 14 1 7/8 8 3/4 2 5/8 2 6.75 9 1/2 8 5/16 15/32 5/16 12 1 1/8 11 1/2
8 16 1/2 2 3/16 10 3/4 3 2 1/4 8.75 11 7/8 10 5/8 15/32 5/16 12 1 1/4 13 3/4
10 20 2 1/2 13 1/2 3 3/8 2 9/16 10.88 14 12 3/4 15/32 5/16 16 1 3/8 17
12 22 2 5/8 15 3/4 3 5/8 2 3/4 12.94 16 1/4 15 15/32 5/16 20 1 3/8 19 1/4
14 23 3/4 2 3/4 17 3 11/16 2 7/8 14.19 18 16 1/2 15/32 5/16 20 1 1/2 20 3/4
16 27 3 19 1/2 4 3/16 3 1/16 16.19 20 18 1/2 15/32 5/16 20 1 5/8 23 3/4
18 29 1/4 3 1/4 21 1/2 4 5/8 3 1/8 18.19 22 5/8 21 15/32 5/16 20 1 3/4 25 3/4
20 32 3 1/2 24 5 3 1/4 20.19 25 23 17/32 3/8 24 1 3/4 28 1/2
22 34 1/4 3 3/4 26 1/2 5 1/4 3 7/16 22.19 27 25 19/32 7/16 24 1 7/8 30 5/8
24 37 4 28 1/4 5 1/2 3 5/8 24.19 29 1/2 27 1/4 21/32 7/16 24 2 33

ANSI Class 900, B16.5 RTJ (in), Threaded Flange

20190202081534 31377 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 4 3/4 7/8 1 1/2 1 1/4 7/8 0.93 2 3/8 1 9/16 11/32 1/4 4 7/8 3 1/4
3/4 5 1/8 1 1 3/4 1 3/8 1 1.14 2 5/8 1 3/4 11/32 1/4 4 7/8 3 1/2
1 5 7/8 1 1/8 2 1/16 1 5/8 1 1/8 1.41 2 13/16 2 11/32 1/4 4 1 4
1 1/4 6 1/4 1 1/8 2 1/2 1 5/8 1 3/16 1.75 3 3/16 2 3/8 11/32 1/4 4 1 4 3/8
1 1/2 7 1 1/4 2 3/4 1 3/4 1 1/4 1.99 3 5/8 2 11/16 11/32 1/4 4 1 1/8 4 7/8
2 8 1/2 1 1/2 4 1/8 2 1/4 1 1/2 2.50 4 7/8 3 3/4 15/32 5/16 8 1 6 1/2
2 1/2 9 5/8 1 5/8 4 7/8 2 1/2 1 7/8 3.00 5 3/8 4 1/4 15/32 5/16 8 1 1/8 7 1/2
3 9 1/2 1 1/2 5 2 1/8 1 5/8 3.63 6 1/8 4 7/8 15/32 5/16 8 1 7 1/2
3 1/2
4 11 1/2 1 3/4 6 1/4 2 3/4 1 7/8 4.63 7 1/8 5 7/8 15/32 5/16 8 1 1/4 9 1/4
5 13 3/4 2 7 1/2 3 1/8 2 1/8 5.69 8 1/2 7 1/8 15/32 5/16 8 1 3/8 11
6 15 2 3/16 9 1/4 3 3/8 2 1/4 6.75 9 1/2 8 5/16 15/32 5/16 12 1 1/4 12 1/2
8 18 1/2 2 1/2 11 3/4 4 2 1/2 8.75 12 1/8 10 5/8 15/32 5/16 12 1 1/2 15 1/2
10 21 1/2 2 3/4 14 1/2 4 1/4 2 13/16 10.88 14 1/4 12 3/4 15/32 5/16 16 1 1/2 18 1/2
12 24 3 1/8 16 1/2 4 5/8 3 12.94 16 1/2 15 15/32 5/16 20 1 1/2 21
14 25 1/4 3 3/8 17 3/4 5 1/8 3 1/4 14.19 18 3/8 16 1/2 21/32 7/16 20 1 5/8 22
16 27 3/4 3 1/2 20 5 1/4 3 3/8 16.19 20 5/8 18 1/2 21/32 7/16 20 1 3/4 24 1/4
18 31 4 22 1/4 6 3 1/2 18.19 23 3/8 21 25/32 1/2 20 2 27
20 33 3/4 4 1/4 24 1/2 6 1/4 3 5/8 20.19 25 1/2 23 25/32 1/2 20 2 1/8 29 1/2
22
24 41 5 1/2 29 1/2 8 4 24.19 30 3/8 27 1/4 1 1/16 5/8 20 2 5/8 35 1/2

ANSI Class 1500, B16.5 RTJ (in), Threaded Flange

20190202081843 16967 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 4 3/4 7/8 1 1/2 1 1/4 7/8 0.93 2 3/8 1 9/16 11/32 1/4 4 7/8 3 1/4
3/4 5 1/8 1 1 3/4 1 3/8 1 1.14 2 5/8 1 3/4 11/32 1/4 4 7/8 3 1/2
1 5 7/8 1 1/8 2 1/16 1 5/8 1 1/8 1.41 2 13/16 2 11/32 1/4 4 1 4
1 1/4 6 1/4 1 1/8 2 1/2 1 5/8 1 3/16 1.75 3 3/16 2 3/8 11/32 1/4 4 1 4 3/8
1 1/2 7 1 1/4 2 3/4 1 3/4 1 1/4 1.99 3 5/8 2 11/16 11/32 1/4 4 1 1/8 4 7/8
2 8 1/2 1 1/2 4 1/8 2 1/4 1 1/2 2.50 4 7/8 3 3/4 15/32 5/16 8 1 6 1/2
2 1/2 9 5/8 1 5/8 4 7/8 2 1/2 1 7/8 3.00 5 3/8 4 1/4 15/32 5/16 8 1 1/8 7 1/2
3 10 1/2 1 7/8 5 1/4 2 7/8 2 3.63 6 5/8 5 3/8 15/32 5/16 8 1 1/4 8
3 1/2
4 12 1/4 2 1/8 6 3/8 3 9/16 2 1/4 4.63 7 5/8 6 3/8 15/32 5/16 8 1 3/8 9 1/2
5 14 3/4 2 7/8 7 3/4 4 1/8 2 1/2 5.69 9 7 5/8 15/32 5/16 8 1 5/8 11 1/2
6 15 1/2 3 1/4 9 4 11/16 2 3/4 6.75 9 3/4 8 5/16 17/32 3/8 12 1 1/2 12 1/2
8 19 3 5/8 11 1/2 5 5/8 3 8.75 12 1/2 10 5/8 21/32 7/16 12 1 3/4 15 1/2
10 23 4 1/4 14 1/2 6 1/4 3 5/16 10.88 14 5/8 12 3/4 21/32 7/16 12 2 19
12 26 1/2 4 7/8 17 3/4 7 1/8 3 5/8 12.94 17 1/4 15 29/32 9/16 16 2 1/8 22 1/2
14 29 1/2 5 1/4 19 1/2 19 1/4 16 1/2 1 1/16 5/8 16 2 3/8 25
16 32 1/2 5 3/4 21 3/4 21 1/2 18 1/2 1 3/16 11/16 16 2 5/8 27 3/4
18 36 6 3/8 23 1/2 24 1/8 21 1 3/16 11/16 16 2 7/8 30 1/2
20 38 3/4 7 25 1/4 26 1/2 23 1 5/16 11/16 16 3 1/8 32 3/4
22
24 46 8 30 31 1/4 27 1/4 1 7/16 13/16 16 3 5/8 39

ANSI Class 2500, B16.5 RTJ (in), Threaded Flange

20190202082010 38572 - ANSI/ASME B16.5 Threaded Flange Dimensions

Pipe Size

(NPS)

Outside Diameter of Flange

A

Thickness of Flange

C

Diameter of Hub at Base

J

Length of Hub

L

Minimum Thread Length

N

Diameter Bore

S

Diameter of Raised Face

T

Diameter of Groove

U

Groove Width

W

Groove Depth

X

Number of Bolt Holes

 

Diameter of Bolt Holes

 

Bolt Circle Diameter

P

1/2 5 1/4 1 3/16 1 11/16 1 9/16 1 1/8 0.93 2 9/16 1 11/16 11/32 1/4 4 7/8 3 1/2
3/4 5 1/2 1 1/4 2 1 11/16 1 1/4 1.14 2 7/8 2 11/32 1/4 4 7/8 3 3/4
1 6 1/4 1 3/8 2 1/4 1 7/8 1 3/8 1.41 3 1/4 2 3/8 11/32 1/4 4 1 4 1/4
1 1/4 7 1/4 1 1/2 2 7/8 2 1/16 1 1/2 1.75 4 2 27/32 15/32 5/16 4 1 1/8 5 1/8
1 1/2 8 1 3/4 3 1/8 2 3/8 1 3/4 1.99 4 1/2 3 1/4 15/32 5/16 4 1 1/4 5 3/4
2 9 1/4 2 3 3/4 2 3/4 2 2.50 5 1/4 4 15/32 5/16 8 1 1/8 6 3/4
2 1/2 10 1/2 2 1/4 4 1/2 3 1/8 2 1/4 3.00 5 7/8 4 3/8 17/32 3/8 8 1 1/4 7 3/4
3 12 2 5/8 5 1/4 3 5/8 2 1/2 3.63 6 5/8 5 17/32 3/8 8 1 3/8 9
3 1/2
4 14 3 6 1/2 4 1/4 2 3/4 4.63 8 6 3/16 22/51 7/16 8 1 5/8 10 3/4
5 16 1/2 3 5/8 8 5 1/8 3 5.69 9 1/2 7 1/2 21/32 1/2 8 1 7/8 12 3/4
6 19 4 1/4 9 1/4 6 3 1/4 6.75 11 9 25/32 1/2 8 2 1/8 14 1/2
8 21 3/4 5 12 7 3 3/4 8.75 13 3/8 11 29/32 9/16 12 2 1/8 17 1/4
10 26 1/2 6 1/2 14 3/4 9 4 1/4 10.88 16 3/4 13 1/2 1 3/16 11/16 12 2 5/8 21 1/4
12 30 7 1/4 17 3/8 10 4 3/4 12.94 19 1/2 16 1 5/16 11/16 12 2 7/8 24 3/8

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