20 inch BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H)
20 inch (DN 500) to BS 10: OD 101.6 mm; Bore 28.7 mm; thickness 4.8 mm; PCD 73 mm; bolts 4.
Key to dimensions
- D
- Outside diameter of flange
- B
- Bore (inside diameter) of plate flange
- C
- Flange thickness — plate or blind, raised face (RF) or flat face (FF)
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolt holes
20 inch BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H) — all dimensions
BS 10 Table D — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 101.6 mm | 4.00 in |
| Bore — B | 28.7 mm | 1.13 in |
| Plate, RF — C | 4.8 mm | 0.189 in |
| Plate, FF — C | 4.8 mm | 0.189 in |
| Blind, RF — C | 4.8 mm | 0.189 in |
| Blind, FF — C | 4.8 mm | 0.189 in |
| Bolt circle — K | 73 mm | 2.87 in |
| Number of bolts | 4 | |
| Bolt dia | 12.7 |
BS 10 Table E — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 101.6 mm | 4.00 in |
| Bore — B | 28.7 mm | 1.13 in |
| Plate, RF — C | 6.4 mm | 0.252 in |
| Blind, RF — C | 6.4 mm | 0.252 in |
| Bolt circle — K | 73 mm | 2.87 in |
| Number of bolts | 4 | |
| Bolt dia | 12.7 |
BS 10 Table F — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 101.6 mm | 4.00 in |
| Bore — B | 28.7 mm | 1.13 in |
| Plate, RF — C | 9.5 mm | 0.374 in |
| Blind, RF — C | 9.5 mm | 0.374 in |
BS 10 Table H — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 114.3 mm | 4.50 in |
| Bore — B | 28.7 mm | 1.13 in |
| Plate, RF — C | 12.7 mm | 0.500 in |
| Blind, RF — C | 12.7 mm | 0.500 in |
| Bolt circle — K | 82.6 mm | 3.25 in |
| Number of bolts | 4 | |
| Bolt dia | 15.9 |
Values are nominal, from BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H). Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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Other sizes — BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H)
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20 inch BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H): common questions
What are the 20 inch BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H)?
20 inch (DN 500) to BS 10: OD 101.6 mm; Bore 28.7 mm; thickness 4.8 mm; PCD 73 mm; bolts 4.
Does Teshi Group manufacture 20 inch flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to BS 10, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the 20 inch dimensions as a PDF?
Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full BS 10 Plate Flange & Blind Flange Dimensions (Tables D, E, F, H) chart.
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