12 inch BS 10 Table S Flange Dimensions
12 inch (DN 300) to BS 10: OD 578 mm; PCD 508 mm; bolts 16; holes 41 mm; bolt size 38.
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)
12 inch BS 10 Table S Flange Dimensions — all dimensions
BS 10 Table S — flange dimensions
| Dimension | Value | Equivalent |
|---|---|---|
| Size | 300 | |
| Flange OD — D | 578 mm | 22.76 in |
| Bolt circle — K | 508 mm | 20.00 in |
| Number of bolts | 16 | |
| Hole dia — L | 41 mm | 1.61 in |
| Bolt dia | 38 |
Values are nominal, from BS 10 Table S Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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12 inch BS 10 Table S Flange Dimensions: common questions
What are the 12 inch BS 10 Table S Flange Dimensions?
12 inch (DN 300) to BS 10: OD 578 mm; PCD 508 mm; bolts 16; holes 41 mm; bolt size 38.
Does Teshi Group manufacture 12 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 12 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 S Flange Dimensions chart.
Need 12 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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