3/4 inch BS 10 Table E Flange Dimensions
3/4 inch (DN 20) to BS 10: OD 4 in; thickness 3/8 in; PCD 2 7/8 in; bolts 4; holes 9/16 in.
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)
3/4 inch BS 10 Table E Flange Dimensions — all dimensions
BS 10 Table E — flange dimensions
| Dimension | Value | Equivalent |
|---|---|---|
| Size | 20 | |
| Flange OD — D | 4 in | 101.6 mm |
| Flange OD — D | 102 mm | 4.02 in |
| Steel, heavy series — C | 3/8 in | 9.5 mm |
| Steel, heavy series — C | 10 mm | 0.394 in |
| Steel, light series — C | 1/4 in | 6.3 mm |
| Cast iron — C | 1/2 in | 12.7 mm |
| Bolt circle — K | 2 7/8 in | 73.0 mm |
| Bolt circle — K | 73 mm | 2.87 in |
| Number of bolts | 4 | |
| Hole dia — L | 9/16 in | 14.3 mm |
| Hole dia — L | 14 mm | 0.551 in |
| Bolt size | 1/2 |
Values are nominal, from BS 10 Table E Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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3/4 inch BS 10 Table E Flange Dimensions: common questions
What are the 3/4 inch BS 10 Table E Flange Dimensions?
3/4 inch (DN 20) to BS 10: OD 4 in; thickness 3/8 in; PCD 2 7/8 in; bolts 4; holes 9/16 in.
Does Teshi Group manufacture 3/4 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 3/4 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 Table E Flange Dimensions chart.
Need 3/4 inch flanges?
Teshi Group manufactures them in India — send your size, rating and material and get a quote in 24–48 hours.
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