BS 10 Table S Flange Dimensions
This chart gives BS 10 Table S flange dimensions — outside diameter, thickness, pitch circle diameter, number and size of bolt holes and bolts — in inches and millimetres. Table S is the BS 10 rating for steam, about 1200 psi.
Teshi Group manufactures steel flanges drilled to BS 10 tables for replacement and retrofit work alongside its ASME and EN range.
Key to dimensions
- D
- Outside diameter of flange
- C
- Flange thickness, excluding raised face unless stated
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolts
- L
- Bolt hole diameter
- Bolt
- Bolt size (metric M or inch diameter)
BS 10 Table S Flange Dimensions — tables
BS 10 Table S — flange dimensions
| Size · in | Size · mm | DFlange OD · mm | CFlange · mm | KBolt circle · mm | nBolts | LHole dia · mm | BoltSize · in | BoltDia · mm |
|---|---|---|---|---|---|---|---|---|
| 1/2 | 15 | 127 | 22.2 | 89 | 4 | 22 | 3/4 | 19 |
| 3/4 | 20 | 127 | 22.2 | 89 | 4 | 22 | 3/4 | 19 |
| 1 | 25 | 140 | 25.4 | 102 | 4 | 22 | 3/4 | 19 |
| 1 1/4 | 32 | 146 | 28.6 | — | 4 | 22 | 3/4 | 19 |
| 1 1/2 | 40 | 159 | 28.6 | 121 | 4 | 22 | 3/4 | 19 |
| 2 | 50 | 171 | 31.8 | 133 | 8 | 22 | 3/4 | 19 |
| 2 1/2 | 65 | 184 | 31.8 | 146 | 8 | 22 | 3/4 | 19 |
| 3 | 80 | 203 | 35 | 165 | 8 | 25 | — | — |
| 4 | 100 | 248 | 41.3 | 203 | 8 | 29 | 1 | 25 |
| 5 | 125 | 285.8 | 44.5 | 235 | 12 | 25.4 | 7/8 | — |
| 6 | 150 | 324 | 50.8 | 273 | 12 | 29 | 1 | 25 |
| 8 | 200 | 413 | — | 356 | 12 | 35 | — | 32 |
| 10 | 250 | 483 | — | 425 | 16 | 35 | — | 32 |
| 12 | 300 | 578 | — | 508 | 16 | 41 | — | 38 |
| 14 | 350 | 648 | — | 578 | 20 | — | — | 38 |
| 16 | 400 | 743 | — | 660 | 20 | 48 | — | 44 |
Notes
- Inch and millimetre values are given as published; BS 10 is an inch standard.
- BS 10 is withdrawn and superseded by BS EN 1092-1, but Table D, E, F and H drilling is still widely used on existing plant, marine and UK-pattern equipment.
- Values are nominal, compiled from published copies of the standard; blank cells (—) are values not confirmed from the sources available. Verify against the current edition before design, purchase or fabrication.
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
Dimension finder
Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.
BS 10 Table S Flange Dimensions — size by size
Every size has its own page with a drawing, mm and inch values and a one-size PDF.
Equivalent and related standards to BS 10 Table S Flange Dimensions
All equivalents| Region | Standard | Relationship |
|---|---|---|
| Australia | AS 2129 Table S | Australian flange tables derived from BS 10; most tables share drilling — check thickness |
| UK | BS 4504 / EN 1092-1 | Replaced BS 10 for new work in the UK |
Teshi Group manufactures flanges and fittings to all of these standards on request, including Chinese GB / HG / SH and European EN dimensions for export projects. Always confirm bolting, facing and thickness when substituting one standard for another.
FAQ
BS 10 Table S Flange dimensions: common questions
What is the PCD of a 4 inch BS 10 Table S flange?
A 4 in BS 10 Table S flange has an outside diameter of 248, a pitch circle diameter of 203 and 8 bolt holes.
Is BS 10 Table S the same as ASME B16.5 or PN 16?
No. BS 10 drilling is inch-based and differs from ASME B16.5 Class 150/300 and from PN flanges in most sizes, so flanges must be ordered to the same table to mate.
Does Teshi Group manufacture BS 10 flanges?
Teshi Group manufactures steel flanges in India to BS 10 drilling — weld neck, slip-on, plate and blind — in carbon, alloy, stainless, duplex and nickel-alloy grades, with EN 10204 3.1 certificates.
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View online · PDFBS 10BS 10 Table D flange dimensions
BS 10 Table D flange dimensions (low pressure (about 100 psi cold)): OD, thickness, PCD, holes and bolts, in inches and mm.
View online · PDFBS 10BS 10 Table E flange dimensions
BS 10 Table E flange dimensions (about 200 psi cold): OD, thickness, PCD, holes and bolts, in inches and mm.
View online · PDFBS 10BS 10 Table F flange dimensions
BS 10 Table F flange dimensions (about 300 psi cold): OD, thickness, PCD, holes and bolts, in inches and mm.
View online · PDFBS 10BS 10 Table H flange dimensions
BS 10 Table H flange dimensions (about 400 psi cold): OD, thickness, PCD, holes and bolts, in inches and mm.
View online · PDFASME B16.5ASME B16.5 Class 150 flange dimensions
Class 150 weld neck, slip-on, blind, socket weld, threaded and lap joint flange dimensions, NPS ½–24, in mm.
View online · PDF
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