DN 50 ASME B16.5 Plate Flange & Blind Flange Dimensions
DN 50 (2") to ASME B16.5: OD 152.4 mm; PCD 120.7 mm; bolts 4; holes 19.1 mm; raised face 92.1 mm.
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
- L
- Bolt hole diameter
- d1
- Raised face diameter
- f
- Raised face height
DN 50 ASME B16.5 Plate Flange & Blind Flange Dimensions — all dimensions
ASME B16.5 Class 150 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 152.4 mm | 6.00 in |
| Bolt circle — K | 120.7 mm | 4.75 in |
| Number of bolts | 4 | |
| Hole dia — L | 19.1 mm | 0.752 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 1.6 mm | 0.063 in |
| Bore — B | 62 mm | 2.44 in |
| Plate, RF — C | 19.1 mm | 0.752 in |
| Plate, FF — C | 17.5 mm | 0.689 in |
| Blind, RF — C | 19.1 mm | 0.752 in |
| Blind, FF — C | 17.5 mm | 0.689 in |
ASME B16.5 Class 300 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 165.1 mm | 6.50 in |
| Bolt circle — K | 127 mm | 5.00 in |
| Number of bolts | 8 | |
| Hole dia — L | 19.1 mm | 0.752 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 1.6 mm | 0.063 in |
| Bore — B | 62 mm | 2.44 in |
| Plate, RF — C | 22.2 mm | 0.874 in |
| Plate, FF — C | 20.6 mm | 0.811 in |
| Blind, RF — C | 22.2 mm | 0.874 in |
| Blind, FF — C | 20.6 mm | 0.811 in |
ASME B16.5 Class 400 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 165 mm | 6.50 in |
| Bolt circle — K | 127 mm | 5.00 in |
| Number of bolts | 8 | |
| Hole dia — L | 19.1 mm | 0.752 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 61.9 mm | 2.44 in |
| Plate, RF — C | 31.8 mm | 1.25 in |
| Plate, FF — C | 25.4 mm | 1.00 in |
| Blind, RF — C | 31.8 mm | 1.25 in |
| Blind, FF — C | 25.4 mm | 1.00 in |
ASME B16.5 Class 600 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 165 mm | 6.50 in |
| Bolt circle — K | 127 mm | 5.00 in |
| Number of bolts | 8 | |
| Hole dia — L | 19.1 mm | 0.752 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 61.9 mm | 2.44 in |
| Plate, RF — C | 31.8 mm | 1.25 in |
| Plate, FF — C | 25.4 mm | 1.00 in |
| Blind, RF — C | 31.8 mm | 1.25 in |
| Blind, FF — C | 25.4 mm | 1.00 in |
ASME B16.5 Class 900 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 215 mm | 8.46 in |
| Bolt circle — K | 165.1 mm | 6.50 in |
| Number of bolts | 8 | |
| Hole dia — L | 25.4 mm | 1.00 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 61.9 mm | 2.44 in |
| Plate, RF — C | 44.5 mm | 1.75 in |
| Plate, FF — C | 38.1 mm | 1.50 in |
| Blind, RF — C | 44.5 mm | 1.75 in |
| Blind, FF — C | 38.1 mm | 1.50 in |
ASME B16.5 Class 1500 — plate and blind flange (mm)
| Dimension | Value | Equivalent |
|---|---|---|
| Flange OD — D | 215 mm | 8.46 in |
| Bolt circle — K | 165.1 mm | 6.50 in |
| Number of bolts | 8 | |
| Hole dia — L | 25.4 mm | 1.00 in |
| Raised face — d1 | 92.1 mm | 3.63 in |
| RF height — f | 6.4 mm | 0.252 in |
| Bore — B | 61.9 mm | 2.44 in |
| Plate, RF — C | 44.5 mm | 1.75 in |
| Plate, FF — C | 38.1 mm | 1.50 in |
| Blind, RF — C | 44.5 mm | 1.75 in |
| Blind, FF — C | 38.1 mm | 1.50 in |
Values are nominal, from ASME B16.5 Plate Flange & Blind Flange Dimensions. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.
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DN 50 ASME B16.5 Plate Flange & Blind Flange Dimensions: common questions
What are the DN 50 ASME B16.5 Plate Flange & Blind Flange Dimensions?
DN 50 (2") to ASME B16.5: OD 152.4 mm; PCD 120.7 mm; bolts 4; holes 19.1 mm; raised face 92.1 mm.
Does Teshi Group manufacture DN 50 flanges?
Yes. Teshi Group is an OEM manufacturer in India of flanges to ASME B16.5, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.
Can I download the DN 50 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 ASME B16.5 Plate Flange & Blind Flange Dimensions chart.
Need DN 50 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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