ANSI/ASME B16.5 Slip On Flange Dimensions

ANSI/ASME B16.5 Slip On Flange Dimensions

Slip On flanges (SO flanges/Slip-on flanges) are designed to slip over the outside of pipe, long-tangent elbows, reducers, and swages. The flange has poor resistance to shock and vibration. It is easier to align than a weld neck flange. This flange is ideal for low pressure applications since the strength when under internal pressure is about one third that of a weld neck flange. This flange has a raised face. Slip On flanges or SO flanges are commonly lower in price than weld-neck flanges, and to this effect are a popular choice for our customers. However, customers should bear in mind that this initial cost saving may be diminished by the additional cost of the two fillet welds required for proper installation. Moreover, weld-neck flanges have a higher life expentancy than slip-on flanges under duress.
The slip on flange is positioned so the inserted end of the pipe or fitting is set short of the flange face by the thickness of the pipe wall plus 1/8 of an inch, which thus allows for a fillet weld inside the SO flange equal without doing any damage to the flange face. The back or outside of the slip-on flange or SO flange is also welded with a fillet weld.

China Slip On Flange Manufacturer www.steeljrv.com supplies Slip On Flanges, SO Flange, Slip-on Flanges in forged steel, Stainless Steel, alloy steel, etc.

Material of Slip-on flange:

• Carbon steel: ASTM A105,ASTM A105N,GB 20,C22.8.
• Alloy steel: ASTM/ASME A182 F1-F12-F11-F22- F5-F9- F91
• Stainless steel: ASTM/ASME A182 F304-304L-304H-304LN-304N
• ASTM/ASME A182 F316-316L-316H-316LN-316N-316Ti
• ASTM/ASME A182 F321-321H, F347-347H
• Low temperature steel: ASTM/ASME A350 LF2.
• High performance steel: ASTM/ASME A694 F42 , F52, F56, F60, F65, F70

Standards of Slip-on flange:

• ASME/ANSI B16.5: pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
• MSS SP 44
• CSA Z245.12
• EN1092-1,EN1759-1.
• DIN2573,DIN2576.
• BS1560,BS 4504,BS 10.
• AFNOR NF E29-200-1
• ISO7005-1
• AS2129
• JIS B2220
• UNI 2276. UNI 2277.UNI 2278 .UNI 6089 .UNI 6090

How to measure slip-on flanges?

Take the measurements of:

• OD: Outside Diameter
• ID: Inside Diameter
• BC: Bolt Circle
• HD: Hole diameter

Key Features:

Some important features are as follows:

• One size fits all pipe schedules.
• Fabricators can more easily cut pipe to length for slip-on flanges.
• The smaller thickness of this flange allows for easier alignment of bolting holes.
• They are generally not preferred for high pressure temperature environments.

Slip On Flange Dimensions & Approximate Masses

Raised Face & Flat Face ANSI 75 SO Flange FF & RF Industry Standard (in) ANSI 150 SO Flange FF & RF (in) ANSI 300 SO Flange FF & RF (in) ANSI 400 SO Flange FF & RF (in) ANSI 600 SO Flange FF & RF (in) ANSI 900 SO Flange FF & RF (in) ANSI 1500 SO Flange FF & RF (in) ANSI 2500 SO Flange FF & RF (in)

Ring Type Joint ANSI 150 SO Flange RTJ (in) ANSI 300 SO Flange RTJ in) ANSI 400 SO Flange RTJ (in) ANSI 600 SO Flange RTJ (in) ANSI 900 SO Flange RTJ (in) ANSI 1500 SO Flange RTJ (in) ANSI 2500 SO Flange RTJ (in)

ANSI/ASME B16.5 Slip On Flange FF & RF Class 75 (in)

• Industry Standard Flanges have no national standard code or are they covered by any governing body.
• Bolt circle diameters are 1/8 inch larger than bolt diameter.

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	Number of Bolt Holes	Diameter of Bolt Holes	Bolt Circle Diameter P	Approx. Weight
26	33	30	1 1/4	26 1/4	28 1/2	2 1/4	32	1	31	120
28	35	32	1 3/8	28 1/4	30 1/2	2 1/4	36	1	33	140
30	37	34	1 3/8	30 1/4	32 1/2	2 1/4	36	1	35	150
32	39 1/2	36 1/4	1 1/2	32 1/4	34 5/8	2 1/2	40	1 1/8	37 3/8	170
34	41 1/2	38 1/4	1 5/8	34 1/4	36 5/8	2 1/2	40	1 1/8	39 3/8	180
36	43 1/2	40 1/4	1 5/8	36 1/4	38 5/8	2 1/2	44	1 1/8	41 3/8	190
42	50	46 1/2	1 7/8	42 1/4	44 3/4	2 3/4	48	1 1/4	47 3/4	235
48	56	52 1/2	2 1/8	48 1/4	50 3/4	2 7/8	56	1 1/4	53 3/4	270
54	62 1/2	59	2 3/8	54 1/4	57 1/4	3 1/8	68	1 1/4	60 1/4	335
60	68 1/2	65	2 5/8	60 1/4	63 1/4	3 5/8	72	1 1/4	66 1/4	450
66	75 1/2	71 5/8	2 7/8	66 1/4	69 1/2	4	72	1 3/8	73	590
72	81 1/2	77 5/8	3 1/8	72 1/4	75 1/2	4 1/2	80	1 3/8	79	730

ANSI/ASME B16.5 Slip On Flange RF & FF Class 150 (in)

• Dimensions to ASME B16.5 – Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
• Bolt circle diameters are 1/8 inch larger than bolt diameter.

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 3/16	5/8	4	5/8	2 3/8	2
3/4	3 7/8	1 11/16	1/2	1.09	1 1/2	5/8	4	5/8	2 3/4	2
1	4 1/4	2	9/16	1.36	1 15/16	11/16	4	5/8	3 1/8	2
1 1/4	4 5/8	2 1/2	5/8	1.70	2 5/16	13/16	4	5/8	3 1/2	3
1 1/2	5	2 7/8	11/16	1.95	2 9/16	7/8	4	5/8	3 7/8	3
2	6	3 5/8	3/4	2.44	3 1/16	1	4	3/4	4 3/4	5
2 1/2	7	4 1/8	7/8	2.94	3 9/16	1 1/8	4	3/4	5 1/2	7
3	7 1/2	5	15/16	3.57	4 1/4	1 3/16	4	3/4	6	8
3 1/2	8 1/2	5 1/2	15/16	4.07	4 13/16	1 1/4	8	3/4	7	11
4	9	6 3/16	15/16	4.57	5 5/16	1 5/16	8	3/4	7 1/2	13
5	10	7 5/16	15/16	5.66	6 7/16	1 7/16	8	7/8	8 1/2	15
6	11	8 1/2	1	6.72	7 9/16	1 9/16	8	7/8	9 1/2	19
8	13 1/2	10 5/8	1 1/8	8.72	9 11/16	1 3/4	8	7/8	11 3/4	30
10	16	12 3/4	1 3/16	10.88	12	1 15/16	12	1	14 1/4	43
12	19	15	1 1/4	12.88	14 3/8	2 3/16	12	1	17	64
14	21	16 1/4	1 3/8	14.14	15 3/4	2 1/4	12	1 1/8	18 3/4	85
16	23 1/2	18 1/2	1 7/16	16.16	18	2 1/2	16	1 1/8	21 1/4	93
18	25	21	1 9/16	18.18	19 7/8	2 11/16	16	1 1/4	22 3/4	120
20	27 1/2	23	1 11/16	20.20	22	2 7/8	20	1 1/4	25	155
22	29 1/2	25 1/4	1 13/16	22.22	24	3 1/8	20	1 3/8	27 1/4	159
24	32	27 1/4	1 7/8	24.25	26 1/8	3 1/4	20	1 3/8	29 1/2	210

ANSI/ASME B16.5 Slip On Flange FF & RF Class 300 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 1/2	7/8	4	5/8	2 5/8	3
3/4	4 5/8	1 11/16	5/8	1.09	1 7/8	1	4	3/4	3 1/4	3
1	4 7/8	2	11/16	1.36	2 1/8	1 1/16	4	3/4	3 1/2	3
1 1/4	5 1/4	2 1/2	3/4	1.70	2 1/2	1 1/16	4	3/4	3 7/8	4
1 1/2	6 1/8	2 7/8	13/16	1.95	2 3/4	1 3/16	4	7/8	4 1/2	6
2	6 1/2	3 5/8	7/8	2.44	3 5/16	1 5/16	8	3/4	5	7
2 1/2	7 1/2	4 1/8	1	2.94	3 15/16	1 1/2	8	7/8	5 7/8	10
3	8 1/4	5	1 1/8	3.57	4 5/8	1 11/16	8	7/8	6 5/8	13
3 1/2	9	5 1/2	1 3/16	4.07	5 1/4	1 3/4	8	7/8	7 1/4	17
4	10	6 3/16	1 1/4	4.57	5 3/4	1 7/8	8	7/8	7 7/8	22
5	11	7 5/16	1 3/8	5.66	7	2	8	7/8	9 1/4	28
6	12 1/2	8 1/2	1 7/16	6.72	8 1/8	2 1/16	12	7/8	10 5/8	39
8	15	10 5/8	1 5/8	8.72	10 1/4	2 7/16	12	1	13	58
10	17 1/2	12 3/4	1 7/8	10.88	12 5/8	2 5/8	16	1 1/8	15 1/4	81
12	20 1/2	15	2	12.88	14 3/4	2 7/8	16	1 1/4	17 3/4	115
14	23	16 1/4	2 1/8	14.14	16 3/4	3	20	1 1/4	20 1/4	164
16	25 1/2	18 1/2	2 1/4	16.16	19	3 1/4	20	1 3/8	22 1/2	220
18	28	21	2 3/8	18.18	21	3 1/2	24	1 3/8	24 3/4	280
20	30 1/2	23	2 1/2	20.20	23 1/8	3 3/4	24	1 3/8	27	325
22	33	25 1/4	2 5/8	22.22	25 1/4	4	24	1 5/8	29 1/4	433
24	36	27 1/4	2 3/4	24.25	27 5/8	4 3/16	24	1 5/8	32	490

ANSI/ASME B16.5 Slip On Flange FF & RF Class 400 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 1/2	7/8	4	5/8	2 5/8	3
3/4	4 5/8	1 11/16	5/8	1.09	1 7/8	1	4	3/4	3 1/4	3
1	4 7/8	2	11/16	1.36	2 1/8	1 1/16	4	3/4	3 1/2	4
1 1/4	5 1/4	2 1/2	13/16	1.70	2 1/2	1 1/8	4	3/4	3 7/8	6
1 1/2	6 1/8	2 7/8	7/8	1.95	2 3/4	1 1/4	4	7/8	4 1/2	7
2	6 1/2	3 5/8	1	2.44	3 5/16	1 7/16	8	3/4	5	9
2 1/2	7 1/2	4 1/8	1 1/8	2.94	3 15/16	1 5/8	8	7/8	5 7/8	13
3	8 1/4	5	1 1/4	3.57	4 5/8	1 13/16	8	7/8	6 5/8	16
3 1/2	9	5 1/2	1 3/8	4.07	5 1/4	1 15/16	8	1	7 1/4	21
4	10	6 3/16	1 3/8	4.57	5 3/4	2	8	1	7 7/8	26
5	11	7 5/16	1 1/2	5.66	7	2 1/8	8	1	9 1/4	31
6	12 1/2	8 1/2	1 5/8	6.72	8 1/8	2 1/4	12	1	10 5/8	44
8	15	10 5/8	1 7/8	8.72	10 1/4	2 11/16	12	1 1/8	13	67
10	17 1/2	12 3/4	2 1/8	10.88	12 5/8	2 7/8	16	1 1/4	15 1/4	91
12	20 1/2	15	2 1/4	12.88	14 3/4	3 1/8	16	1 3/8	17 3/4	129
14	23	16 1/4	2 3/8	14.14	16 3/4	3 5/16	20	1 3/8	20 1/4	191
16	25 1/2	18 1/2	2 1/2	16.16	19	3 11/16	20	1 1/2	22 1/2	253
18	28	21	2 5/8	18.18	21	3 7/8	24	1 1/2	24 3/4	310
20	30 1/2	23	2 3/4	20.20	23 1/8	4	24	1 5/8	27	378
22	33	25 1/4	2 7/8	22.22	25 1/4	4 1/4	24	1 3/4	29 1/4	464
24	36	27 1/4	3	24.25	27 5/8	4 1/2	24	1 7/8	32	539

ANSI/ASME B16.5 Slip On Flange FF & RF Class 600 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 1/2	7/8	4	5/8	2 5/8	3
3/4	4 5/8	1 11/16	5/8	1.09	1 7/8	1	4	3/4	3 1/4	3
1	4 7/8	2	11/16	1.36	2 1/8	1 1/16	4	3/4	3 1/2	4
1 1/4	5 1/4	2 1/2	13/16	1.70	2 1/2	1 1/8	4	3/4	3 7/8	6
1 1/2	6 1/8	2 7/8	7/8	1.95	2 3/4	1 1/4	4	7/8	4 1/2	7
2	6 1/2	3 5/8	1	2.44	3 5/16	1 7/16	8	3/4	5	9
2 1/2	7 1/2	4 1/8	1 1/8	2.94	3 15/16	1 5/8	8	7/8	5 7/8	13
3	8 1/4	5	1 1/4	3.57	4 5/8	1 13/16	8	7/8	6 5/8	16
3 1/2	9	5 1/2	1 3/8	4.07	5 1/4	1 15/16	8	1	7 1/4	21
4	10 3/4	6 3/16	1 1/2	4.57	6	2 1/8	8	1	8 1/2	37
5	13	7 5/16	1 3/4	5.66	7 7/16	2 3/8	8	1 1/8	10 1/2	63
6	14	8 1/2	1 7/8	6.72	8 3/4	2 5/8	12	1 1/8	11 1/2	80
8	16 1/2	10 5/8	2 3/16	8.72	10 3/4	3	12	1 1/4	13 3/4	115
10	20	12 3/4	2 1/2	10.88	13 1/2	3 3/8	16	1 3/8	17	177
12	22	15	2 5/8	12.88	15 3/4	3 5/8	20	1 3/8	19 1/4	215
14	23 3/4	16 1/4	2 3/4	14.14	17	3 11/16	20	1 1/2	20 3/4	259
16	27	18 1/2	3	16.16	19 1/2	4 3/16	20	1 5/8	23 3/4	366
18	29 1/4	21	3 1/4	18.18	21 1/2	4 5/8	20	1 3/4	25 3/4	476
20	32	23	3 1/2	20.20	24	5	24	1 3/4	28 1/2	612
22	34 1/4	25 1/4	3 3/4	22.22	26 1/2	5 1/4	24	1 7/8	30 5/8	643
24	37	27 1/4	4	24.25	28 1/4	5 1/2	24	2	33	876

ANSI/ASME B16.5 Slip On Flange FF & RF Class 900 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 1/2	1 1/4	4	7/8	3 1/4	9
3/4	5 1/8	1 11/16	1	1.09	1 3/4	1 3/8	4	7/8	3 1/2	9
1	5 7/8	2	1 1/8	1.36	2 1/16	1 5/8	4	1	4	9
1 1/4	6 1/4	2 1/2	1 1/8	1.70	2 1/2	1 5/8	4	1	4 3/8
1 1/2	7	2 7/8	1 1/4	1.95	2 3/4	1 3/4	4	1 1/8	4 7/8	14
2	8 1/2	3 5/8	1 1/2	2.44	4 1/8	2 1/4	8	1	6 1/2	25
2 1/2	9 5/8	4 1/8	1 5/8	2.94	4 7/8	2 1/2	8	1 1/8	7 1/2	36
3	9 1/2	5	1 1/2	3.57	5	2 1/8	8	1	7 1/2	31
3 1/2	–	–	–	–	–	–	–	–	–	–
4	11 1/2	6 3/16	1 3/4	4.57	6 1/4	2 3/4	8	1 1/4	9 1/4	53
5	13 3/4	7 5/16	2	5.66	7 1/2	3 1/8	8	1 3/8	11	83
6	15	8 1/2	2 3/16	6.72	9 1/4	3 3/8	12	1 1/4	12 1/2	108
8	18 1/2	10 5/8	2 1/2	8.72	11 3/4	4	12	1 1/2	15 1/2	172
10	21 1/2	12 3/4	2 3/4	10.88	14 1/2	4 1/4	16	1 1/2	18 1/2	245
12	24	15	3 1/8	12.88	16 1/2	4 5/8	20	1 1/2	21	326
14	25 1/4	16 1/4	3 3/8	14.14	17 3/4	5 1/8	20	1 5/8	22	380
16	27 3/4	18 1/2	3 1/2	16.16	20	5 1/4	20	1 3/4	24 1/4	459
18	31	21	4	18.18	22 1/4	6	20	2	27	647
20	33 3/4	23	4 1/4	20.20	24 1/2	6 1/4	20	2 1/8	29 1/2	792
22	–	–	–	–	–	–	–	–	–	–
24	41	27 1/4	5 1/2	24.25	29 1/2	8	20	2 5/8	35 1/2	1480

ANSI/ASME B16.5 Slip On Flange FF & RF Class 1500 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 1/2	1 1/4	4	7/8	3 1/4	9
3/4	5 1/8	1 11/16	1	1.09	1 3/4	1 3/8	4	7/8	3 1/2	9
1	5 7/8	2	1 1/8	1.36	2 1/16	1 5/8	4	1	4	9
1 1/4	6 1/4	2 1/2	1 1/8	1.70	2 1/2	1 5/8	4	1	4 3/8	10
1 1/2	7	2 7/8	1 1/4	1.95	2 3/4	1 3/4	4	1 1/8	4 7/8	14
2	8 1/2	3 5/8	1 1/2	2.44	4 1/8	2 1/4	8	1	6 1/2	25
2 1/2	9 5/8	4 1/8	1 5/8	2.94	4 7/8	2 1/2	8	1 1/8	7 1/2
3	10 1/2	5	1 7/8	3.57	5 1/4	2 7/8	8	1 1/4	8	48
3 1/2	–	–	–	–	–	–	–	–	–	–
4	12 1/4	6 3/16	2 1/8	4.57	6 3/8	3 9/16	8	1 3/8	9 1/2	73
5	14 3/4	7 5/16	2 7/8	5.66	7 3/4	4 1/8	8	1 5/8	11 1/2	132
6	15 1/2	8 1/2	3 1/4	6.72	9	4 11/16	12	1 1/2	12 1/2	164
8	19	10 5/8	3 5/8	8.72	11 1/2	5 5/8	12	1 3/4	15 1/2	258
10	23	12 3/4	4 1/4	10.88	14 1/2	6 1/4	12	2	19	436
12	26 1/2	15	4 7/8	12.88	17 3/4	7 1/8	16	2 1/8	22 1/2	667

ANSI/ASME B16.5 Slip On Flange FF & RF Class 2500 (in)

Pipe Size (NPS)	Outside Diameter of Flange A	Diameter of Raised Face B	Thickness of Flange C	Diameter of Bore E	Diameter of Hub at Base J	Length of Hub L	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	0.88	1 11/16	1 9/16	4	7/8	3 1/2	7
3/4	5 1/2	1 11/16	1 1/4	1.09	2	1 11/16	4	7/8	3 3/4	9
1	6 1/4	2	1 3/8	1.36	2 1/4	1 7/8	4	1	4 1/4	12
1 1/4	7 1/4	2 1/2	1 1/2	1.70	2 7/8	2 1/16	4	1 1/8	5 1/8	18
1 1/2	8	2 7/8	1 3/4	1.95	3 1/8	2 3/8	4	1 1/4	5 3/4	25
2	9 1/4	3 5/8	2	2.44	3 3/4	2 3/4	8	1 1/8	6 3/4	38
2 1/2	10 1/2	4 1/8	2 1/4	2.94	4 1/2	3 1/8	8	1 1/4	7 3/4	55
3	12	5	2 5/8	3.57	5 1/4	3 5/8	8	1 3/8	9	83
3 1/2	–	–	–	–	–	–	–	–	–	–
4	14	6 3/16	3	4.57	6 1/2	4 1/4	8	1 5/8	10 3/4	127
5	16 1/2	7 5/16	3 5/8	5.66	8	5 1/8	8	1 7/8	12 3/4	210
6	19	8 1/2	4 1/4	6.72	9 1/4	6	8	2 1/8	14 1/2	323
8	21 3/4	10 5/8	5	8.72	12	7	12	2 1/8	17 1/4	485
10	26 1/2	12 3/4	6 1/2	10.88	14 3/4	9	12	2 5/8	21 1/4	925
12	30	15	7 1/4	12.88	17 3/8	10	12	2 7/8	24 3/8	1300

ANSI/ASME B16.5 Slip On Flange RTJ Class 150 (in)

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	1.36	1 15/16	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	1.70	2 5/16	13/16	2 7/8	2 1/4	11/32	1/4	4	5/8	3 1/2
1 1/2	5	5/8	1.95	2 9/16	7/8	3 1/4	2 9/16	11/32	1/4	4	5/8	3 7/8
2	6	11/16	2.44	3 1/16	1	4	3 1/4	11/32	1/4	4	3/4	4 3/4
2 1/2	7	13/16	2.94	3 9/16	1 1/8	4 3/4	4	11/32	1/4	4	3/4	5 1/2
3	7 1/2	7/8	3.57	4 1/4	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	4.07	4 13/16	1 1/4	6 1/16	5 3/16	11/32	1/4	8	3/4	7
4	9	7/8	4.57	5 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	5.66	6 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	6.72	7 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	8.72	9 11/16	1 3/4	10 3/4	9 3/4	11/32	1/4	8	7/8	11 3/4
10	16	1 1/8	10.88	12	1 15/16	13	12	11/32	1/4	12	1	14 1/4
12	19	1 3/16	12.88	14 3/8	2 3/16	16	15	11/32	1/4	12	1	17
14	21	1 5/16	14.14	15 3/4	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	16.16	18	2 1/2	19	17 7/8	11/32	1/4	16	1 1/8	21 1/4
18	25	1 1/2	18.18	19 7/8	2 11/16	21 1/2	20 3/8	11/32	1/4	16	1 1/4	22 3/4 18
20	27 1/2	1 5/8	20.20	22	2 7/8	23 1/2	22	11/32	1/4	20	1 1/4	25
22	29 1/2	1 3/4	22.22	24	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	24.25	26 1/8	3 1/4	28	26 1/2	11/32	1/4	20	1 3/8	29 1/2

ANSI/ASME B16.5 Slip On Flange RTJ Class 300 (in)

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 3/4	1/2	0.88	1 1/2	7/8	2	1 11/32	9/32	7/32	4	5/8	2 5/8
3/4	4 5/8	9/16	1.09	1 7/8	1	2 1/2	1 11/16	11/32	1/4	4	3/4	3 1/4
1	4 7/8	5/8	1.36	2 1/8	1 1/16	2 3/4	2	11/32	1/4	4	3/4	3 1/2
1 1/4	5 1/4	11/16	1.70	2 1/2	1 1/16	3 1/8	2 3/8	11/32	1/4	4	3/4	3 7/8
1 1/2	6 1/8	3/4	1.95	2 3/4	1 3/16	3 9/16	2 11/16	11/32	1/4	4	7/8	4 1/2
2	6 1/2	13/16	2.44	3 5/16	1 5/16	4 1/4	3 1/4	15/32	5/16	8	3/4	5
2 1/2	7 1/2	15/16	2.94	3 15/16	1 1/2	5	4	15/32	5/16	8	7/8	5 7/8
3	8 1/4	1 1/16	3.57	4 5/8	1 11/16	5 3/4	4 7/8	15/32	5/16	8	7/8	6 5/8
3 1/2	9	1 1/8	4.07	5 1/4	1 3/4	6 1/4	5 3/16	15/32	5/16	8	7/8	7 1/4
4	10	1 3/16	4.57	5 3/4	1 7/8	6 7/8	5 7/8	15/32	5/16	8	7/8	7 7/8
5	11	1 6/16	5.66	7	2	8 1/4	7 1/8	15/32	5/16	8	7/8	9 1/4
6	12 1/2	1 3/8	6.72	8 1/8	2 1/16	9 1/2	8 5/16	15/32	5/16	12	7/8	10 5/8
8	15	1 9/16	8.72	10 1/4	2 7/16	11 7/8	10 5/8	15/32	5/16	12	1	13
10	17 1/2	1 13/16	10.88	12 5/8	2 5/8	14	12 3/4	15/32	5/16	16	1 1/8	15 1/4
12	20 1/2	1 15/16	12.88	14 3/4	2 7/8	16 1/4	15	15/32	5/16	16	1 1/4	17 3/4
14	23	2 1/16	14.14	16 3/4	3	18	16 1/2	15/32	5/16	20	1 1/4	20 1/4
16	25 1/2	2 3/16	16.16	19	3 1/4	20	18 1/2	15/32	5/16	20	1 3/8	22 1/2
18	28	2 5/16	18.18	21	3 1/2	22 5/8	21	15/32	5/16	24	1 3/8	24 3/4
20	30 1/2	2 7/16	20.20	23 1/8	3 3/4	25	23	17/32	3/8	24	1 3/8	27
22	33	2 9/16	22.22	25 1/4	4	27	25	19/32	7/16	24	1 5/8	29 1/4
24	36	2 11/16	24.25	27 5/8	4 3/16	29 1/2	27 1/4	21/32	7/16	24	1 5/8	32

ANSI/ASME B16.5 Slip On Flange RTJ Class 400 (in)

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 3/4	9/16	0.88	1 1/2	7/8	2	1 11/32	9/32	7/32	4	5/8	2 5/8
3/4	4 5/8	5/8	1.09	1 7/8	1	2 1/2	1 11/16	11/32	1/4	4	3/4	3 1/4
1	4 7/8	11/16	1.36	2 1/8	1 1/16	2 3/4	2	11/32	1/4	4	3/4	3 1/2
1 1/4	5 1/4	13/16	1.70	2 1/2	1 1/8	3 1/8	2 3/8	11/32	1/4	4	3/4	3 7/8
1 1/2	6 1/8	7/8	1.95	2 3/4	1 1/4	3 9/16	2 11/16	11/32	1/4	4	7/8	4 1/2
2	6 1/2	1	2.44	3 5/16	1 7/16	4 1/4	3 1/4	15/32	5/16	8	3/4	5
2 1/2	7 1/2	1 1/8	2.94	3 15/16	1 5/8	5	4	15/32	5/16	8	7/8	5 7/8
3	8 1/4	1 1/4	3.57	4 5/8	1 13/16	5 3/4	4 7/8	15/32	5/16	8	7/8	6 5/8
3 1/2	9	1 3/8	4.07	5 1/4	1 15/16	6 1/4	5 3/16	15/32	5/16	8	1	7 1/4
4	10	1 3/8	4.57	5 3/4	2	6 7/8	5 7/8	15/32	5/16	8	1	7 7/8
5	11	1 1/2	5.66	7	2 1/8	8 1/4	7 1/8	15/32	5/16	8	1	9 1/4
6	12 1/2	1 5/8	6.72	8 1/8	2 1/4	9 1/2	8 5/16	15/32	5/16	12	1	10 5/8
8	15	1 7/8	8.72	10 1/4	2 11/16	11 7/8	10 5/8	15/32	5/16	12	1 1/8	13
10	17 1/2	2 1/8	10.88	12 5/8	2 7/8	14	12 3/4	15/32	5/16	16	1 1/4	15 1/4
12	20 1/2	2 1/4	12.88	14 3/4	3 1/8	16 1/4	15	15/32	5/16	16	1 3/8	17 3/4
14	23	2 3/8	14.14	16 3/4	3 5/16	18	16 1/2	15/32	5/16	20	1 3/8	20 1/4
16	25 1/2	2 1/2	16.16	19	3 11/16	20	18 1/2	15/32	5/16	20	1 1/2	22 1/2
18	28	2 5/8	18.18	21	3 7/8	22 5/8	21	15/32	5/16	24	1 1/2	24 3/4
20	30 1/2	2 3/4	20.20	23 1/8	4	25	23	17/32	3/8	24	1 5/8	27
22	33	2 7/8	22.22	25 1/4	4 1/4	27	25	19/32	7/16	24	1 3/4	29 1/4
24	36	3	24.25	27 5/8	4 1/2	29 1/2	27 1/4	21/32	7/16	24	1 7/8	32

ANSI/ASME B16.5 Slip On Flange RTJ Class 600 (in)

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 3/4	9/16	0.88	1 1/2	7/8	2	1 11/32	9/32	7/32	4	5/8	2 5/8
3/4	4 5/8	5/8	1.09	1 7/8	1	2 1/2	1 11/16	11/32	1/4	4	3/4	3 1/4
1	4 7/8	11/16	1.36	2 1/8	1 1/16	2 3/4	2	11/32	1/4	4	3/4	3 1/2
1 1/4	5 1/4	13/16	1.70	2 1/2	1 1/8	3 1/8	2 3/8	11/32	1/4	4	3/4	3 7/8
1 1/2	6 1/8	7/8	1.95	2 3/4	1 1/4	3 9/16	2 11/16	11/32	1/4	4	7/8	4 1/2
2	6 1/2	1	2.44	3 5/16	1 7/16	4 1/4	3 1/4	15/32	5/16	8	3/4	5
2 1/2	7 1/2	1 1/8	2.94	3 15/16	1 5/8	5	4	15/32	5/16	8	7/8	5 7/8
3	8 1/4	1 1/4	3.57	4 5/8	1 13/16	5 3/4	4 7/8	15/32	5/16	8	7/8	6 5/8
3 1/2	9	1 3/8	4.07	5 1/4	1 15/16	6 1/4	5 3/16	15/32	5/16	8	1	7 1/4
4	10 3/4	1 1/2	4.57	6	2 1/8	6 7/8	5 7/8	15/32	5/16	8	1	8 1/2
5	13	1 3/4	5.66	7 7/16	2 3/8	8 1/4	7 1/8	15/32	5/16	8	1 1/8	10 1/2
6	14	1 7/8	6.72	8 3/4	2 5/8	9 1/2	8 5/16	15/32	5/16	12	1 1/8	11 1/2
8	16 1/2	2 3/16	8.72	10 3/4	3	11 7/8	10 5/8	15/32	5/16	12	1 1/4	13 3/4
10	20	2 1/2	10.88	13 1/2	3 3/8	14	12 3/4	15/32	5/16	16	1 3/8	17
12	22	2 5/8	12.88	15 3/4	3 5/8	16 1/4	15	15/32	5/16	20	1 3/8	19 1/4
14	23 3/4	2 3/4	14.14	17	3 11/16	18	16 1/2	15/32	5/16	20	1 1/2	20 3/4
16	27	3	16.16	19 1/2	4 3/16	20	18 1/2	15/32	5/16	20	1 5/8	23 3/4
18	29 1/4	3 1/4	18.18	21 1/2	4 5/8	22 5/8	21	15/32	5/16	20	1 3/4	25 3/4
20	32	3 1/2	20.20	24	5	25	23	17/32	3/8	24	1 3/4	28 1/2
22	34 1/4	3 3/4	22.22	26 1/2	5 1/4	27	25	19/32	7/16	24	1 7/8	30 5/8
24	37	4	24.25	28 1/4	5 1/2	29 1/2	27 1/4	21/32	7/16	24	2	33

ANSI/ASME B16.5 Slip On Flange RTJ Class 900 (in)

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	4 3/4	7/8	0.88	1 1/2	1 1/4	2 3/8	1 9/16	11/32	1/4	4	7/8	3 1/4
3/4	5 1/8	1	1.09	1 3/4	1 3/8	2 5/8	1 3/4	11/32	1/4	4	7/8	3 1/2
1	5 7/8	1 1/8	1.36	2 1/16	1 5/8	2 13/16	2	11/32	1/4	4	1	4
1 1/4	6 1/4	1 1/8	1.70	2 1/2	1 5/8	3 3/16	2 3/8	11/32	1/4	4	1	4 3/8
1 1/2	7	1 1/4	1.95	2 3/4	1 3/4	3 5/8	2 11/16	11/32	1/4	4	1 1/8	4 7/8
2	8 1/2	1 1/2	2.44	4 1/8	2 1/4	4 7/8	3 3/4	15/32	5/16	8	1	6 1/2
2 1/2	9 5/8	1 5/8	2.94	4 7/8	2 1/2	5 3/8	4 1/4	15/32	5/16	8	1 1/8	7 1/2
3	9 1/2	1 1/2	3.57	5	2 1/8	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	4.57	6 1/4	2 3/4	7 1/8	5 7/8	15/32	5/16	8	1 1/4	9 1/4
5	13 3/4	2	5.66	7 1/2	3 1/8	8 1/2	7 1/8	15/32	5/16	8	1 3/8	11
6	15	2 3/16	6.72	9 1/4	3 3/8	9 1/2	8 5/16	15/32	5/16	12	1 1/4	12 1/2
8	18 1/2	2 1/2	8.72	11 3/4	4	12 1/8	10 5/8	15/32	5/16	12	1 1/2	15 1/2
10	21 1/2	2 3/4	10.88	14 1/2	4 1/4	14 1/4	12 3/4	15/32	5/16	16	1 1/2	18 1/2
12	24	3 1/8	12.88	16 1/2	4 5/8	16 1/2	15	15/32	5/16	20	1 1/2	21
14	25 1/4	3 3/8	14.14	17 3/4	5 1/8	18 3/8	16 1/2	21/32	7/16	20	1 5/8	22
16	27 3/4	3 1/2	16.16	20	5 1/4	20 5/8	18 1/2	21/32	7/16	20	1 3/4	24 1/4
18	31	4	18.18	22 1/4	6	23 3/8	21	25/32	1/2	20	2	27
20	33 3/4	4 1/4	20.20	24 1/2	6 1/4	25 1/2	23	25/32	1/2	20	2 1/8	29 1/2
22	–	–	–	–	–	–	–	–	–	–	–	–
24	41	5 1/2	24.25	29 1/2	8	30 3/8	27 1/4	1 1/16	5/8	20	2 5/8	35 1/2

ANSI/ASME B16.5 Slip On Flange RTJ Class 1500 (in)

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	4 3/4	7/8	0.88	1 1/2	1 1/4	2 3/8	1 9/16	11/32	1/4	4	7/8	3 1/4
3/4	5 1/8	1	1.09	1 3/4	1 3/8	2 5/8	1 3/4	11/32	1/4	4	7/8	3 1/2
1	5 7/8	1 1/8	1.36	2 1/16	1 5/8	2 13/16	2	11/32	1/4	4	1	4
1 1/4	6 1/4	1 1/8	1.70	2 1/2	1 5/8	3 3/16	2 3/8	11/32	1/4	4	1	4 3/8
1 1/2	7	1 1/4	1.95	2 3/4	1 3/4	3 5/8	2 11/16	11/32	1/4	4	1 1/8	4 7/8
2	8 1/2	1 1/2	2.44	4 1/8	2 1/4	4 7/8	3 3/4	15/32	5/16	8	1	6 1/2
2 1/2	9 5/8	1 5/8	2.94	4 7/8	2 1/2	5 3/8	4 1/4	15/32	5/16	8	1 1/8	7 1/2
3	10 1/2	1 7/8	3.57	5 1/4	2 7/8	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	4.57	6 3/8	3 9/16	7 5/8	6 3/8	15/32	5/16	8	1 3/8	9 1/2
5	14 3/4	2 7/8	5.66	7 3/4	4 1/8	9	7 5/8	15/32	5/16	8	1 5/8	11 1/2
6	15 1/2	3 1/4	6.72	9	4 11/16	9 3/4	8 5/16	17/32	3/8	12	1 1/2	12 1/2
8	19	3 5/8	8.72	11 1/2	5 5/8	12 1/2	10 5/8	21/32	7/16	12	1 3/4	15 1/2
10	23	4 1/4	10.88	14 1/2	6 1/4	14 5/8	12 3/4	21/32	7/16	12	2	19
12	26 1/2	4 7/8	12.88	17 3/4	7 1/8	17 1/4	15	29/32	9/16	16	2 1/8	22 1/2
14	29 1/2	5 1/4	14.14	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	16.16	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	18.18	23 1/2	–	24 1/8	21	1 3/16	11/16	16	2 7/8	30 1/2
20	38 3/4	7	20.20	25 1/4	–	26 1/2	23	1 5/16	11/16	16	3 1/8	32 3/4
22	–	–	–	–	–	–	–	–	–	–	–	–
24	46	8	24.25	30	–	31 1/4	27 1/4	1 7/16	13/16	16	3 5/8	39

ANSI/ASME B16.5 Slip On Flange RTJ Class 2500 (in)

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	5 1/4	1 3/16	0.88	1 11/16	1 9/16	2 9/16	1 11/16	11/32	1/4	4	7/8	3 1/2
3/4	5 1/2	1 1/4	1.09	2	1 11/16	2 7/8	2	11/32	1/4	4	7/8	3 3/4
1	6 1/4	1 3/8	1.36	2 1/4	1 7/8	3 1/4	2 3/8	11/32	1/4	4	1	4 1/4
1 1/4	7 1/4	1 1/2	1.70	2 7/8	2 1/16	4	2 27/32	15/32	5/16	4	1 1/8	5 1/8
1 1/2	8	1 3/4	1.95	3 1/8	2 3/8	4 1/2	3 1/4	15/32	5/16	4	1 1/4	5 3/4
2	9 1/4	2	2.44	3 3/4	2 3/4	5 1/4	4	15/32	5/16	8	1 1/8	6 3/4
2 1/2	10 1/2	2 1/4	2.94	4 1/2	3 1/8	5 7/8	4 3/8	17/32	3/8	8	1 1/4	7 3/4
3	12	2 5/8	3.57	5 1/4	3 5/8	6 5/8	5	17/32	3/8	8	1 3/8	9
3 1/2	–	–	–	–	–	–	–	–	–	–	–	–
4	14	3	4.57	6 1/2	4 1/4	8	6 3/16	22/51	7/16	8	1 5/8	10 3/4
5	16 1/2	3 5/8	5.66	8	5 1/8	9 1/2	7 1/2	21/32	1/2	8	1 7/8	12 3/4
6	19	4 1/4	6.72	9 1/4	6	11	9	25/32	1/2	8	2 1/8	14 1/2
8	21 3/4	5	8.72	12	7	13 3/8	11	29/32	9/16	12	2 1/8	17 1/4
10	26 1/2	6 1/2	10.88	14 3/4	9	16 3/4	13 1/2	1 3/16	11/16	12	2 5/8	21 1/4
12	30	7 1/4	12.88	17 3/8	10	19 1/2	16	1 5/16	11/16	12	2 7/8	24 3/8