Dimension table · Flanges · Type 13
Threaded flange type 13: dimensions to EN 1092-1
Every dimension of the threaded flange (type 13) in one table per pressure rating: the pipe thread Rp to ISO 7-1 and the connection dimensions outside diameter D, bolt circle K, bolt holes n × L and raised face d₁, together with plate thickness C₂, height H₁ and hub diameter N₂ – from PN 6 to PN 40, for nominal sizes DN 10 to DN 150 (Rp 3/8 to Rp 6). All dimensions in millimetres, dimension letters to EN 1092-1.
Connection dimensions are the same across types: outside diameter D, bolt circle K, bolt holes n × L and raised face d₁ apply per DN and PN to all flange types to EN 1092-1 – they are included in the tables here. For the type-independent overview of all pressure ratings, see our flange dimensions PN 6 to PN 40; for the threaded flange, the thread Rp and C₂, H₁ and N₂ are type-specific.
The threaded flange (type 13) is not welded but screwed onto the threaded pipe: an internal thread Rp to ISO 7-1 (tapered Rc on request) runs through the cylindrical hub. That makes it the solution for galvanised pipework and anywhere welding is not permitted or not possible. The size range ends at Rp 6 for DN 150. For an overview of all styles, see our page flange types international; the other type pages: welding neck flange type 11, blind flange type 05 and plate flange type 01.
The column headers use the dimension letters from the drawing above: Rp = pipe thread to ISO 7-1, n × ØL = number × diameter of bolt holes, M = bolt size, d₁ = raised face, K = bolt circle, D = outside diameter, C₂ = plate thickness, H₁ = height, N₂ = hub diameter.
PN 6 – dimension table (DN 10–150)
| DN | Thread 1 | n × ØL (mm) | M 2 | Ød₁ (mm) | ØK (mm) | ØD (mm) | C₂ (mm) 3 | H₁ (mm) | N₂ (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Rp 3/8 | 4 × 11 | M10 | 35 | 50 | 75 | 12 | 20 | 25 |
| 15 | Rp 1/2 | 4 × 11 | M10 | 40 | 55 | 80 | 12 | 20 | 30 |
| 20 | Rp 3/4 | 4 × 11 | M10 | 50 | 65 | 90 | 14 | 24 | 40 |
| 25 | Rp 1 | 4 × 11 | M10 | 60 | 75 | 100 | 14 | 24 | 50 |
| 32 | Rp 1 1/4 | 4 × 14 | M12 | 70 | 90 | 120 | 14 | 26 | 60 |
| 40 | Rp 1 1/2 | 4 × 14 | M12 | 80 | 100 | 130 | 14 | 26 | 70 |
| 50 | Rp 2 | 4 × 14 | M12 | 90 | 110 | 140 | 14 | 28 | 80 |
| 65 | Rp 2 1/2 | 4 × 14 | M12 | 110 | 130 | 160 | 14 | 32 | 100 |
| 80 | Rp 3 | 4 × 18 | M16 | 128 | 150 | 190 | 16 | 34 | 110 |
| 100 | Rp 4 | 4 × 18 | M16 | 148 | 170 | 210 | 16 | 40 | 130 |
| 125 | Rp 5 | 8 × 18 | M16 | 178 | 200 | 240 | 18 | 44 | 160 |
| 150 | Rp 6 | 8 × 18 | M16 | 202 | 225 | 265 | 18 | 44 | 185 |
PN 10 – dimension table (DN 10–150)
| DN | Thread 1 | n × ØL (mm) | M 2 | Ød₁ (mm) | ØK (mm) | ØD (mm) | C₂ (mm) 3 | H₁ (mm) | N₂ (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Rp 3/8 | 4 × 14 | M12 | 40 | 60 | 90 | 16 | 22 | 30 |
| 15 | Rp 1/2 | 4 × 14 | M12 | 45 | 65 | 95 | 16 | 22 | 35 |
| 20 | Rp 3/4 | 4 × 14 | M12 | 58 | 75 | 105 | 18 | 26 | 45 |
| 25 | Rp 1 | 4 × 14 | M12 | 68 | 85 | 115 | 18 | 28 | 52 |
| 32 | Rp 1 1/4 | 4 × 18 | M16 | 78 | 100 | 140 | 18 | 30 | 60 |
| 40 | Rp 1 1/2 | 4 × 18 | M16 | 88 | 110 | 150 | 18 | 32 | 70 |
| 50 | Rp 2 | 4 × 18 | M16 | 102 | 125 | 165 | 18 | 28 | 84 |
| 65 4 | Rp 2 1/2 | 8 × 18 | M16 | 122 | 145 | 185 | 18 | 32 | 104 |
| 80 | Rp 3 | 8 × 18 | M16 | 138 | 160 | 200 | 20 | 34 | 118 |
| 100 | Rp 4 | 8 × 18 | M16 | 158 | 180 | 220 | 20 | 40 | 140 |
| 125 | Rp 5 | 8 × 18 | M16 | 188 | 210 | 250 | 22 | 44 | 168 |
| 150 | Rp 6 | 8 × 22 | M20 | 212 | 240 | 285 | 22 | 44 | 195 |
PN 16 – dimension table (DN 10–150)
| DN | Thread 1 | n × ØL (mm) | M 2 | Ød₁ (mm) | ØK (mm) | ØD (mm) | C₂ (mm) 3 | H₁ (mm) | N₂ (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Rp 3/8 | 4 × 14 | M12 | 40 | 60 | 90 | 16 | 22 | 30 |
| 15 | Rp 1/2 | 4 × 14 | M12 | 45 | 65 | 95 | 16 | 22 | 35 |
| 20 | Rp 3/4 | 4 × 14 | M12 | 58 | 75 | 105 | 18 | 26 | 45 |
| 25 | Rp 1 | 4 × 14 | M12 | 68 | 85 | 115 | 18 | 28 | 52 |
| 32 | Rp 1 1/4 | 4 × 18 | M16 | 78 | 100 | 140 | 18 | 30 | 60 |
| 40 | Rp 1 1/2 | 4 × 18 | M16 | 88 | 110 | 150 | 18 | 32 | 70 |
| 50 | Rp 2 | 4 × 18 | M16 | 102 | 125 | 165 | 18 | 28 | 84 |
| 65 4 | Rp 2 1/2 | 8 × 18 | M16 | 122 | 145 | 185 | 18 | 32 | 104 |
| 80 | Rp 3 | 8 × 18 | M16 | 138 | 160 | 200 | 20 | 34 | 118 |
| 100 | Rp 4 | 8 × 18 | M16 | 158 | 180 | 220 | 20 | 40 | 140 |
| 125 | Rp 5 | 8 × 18 | M16 | 188 | 210 | 250 | 22 | 44 | 168 |
| 150 | Rp 6 | 8 × 22 | M20 | 212 | 240 | 285 | 22 | 44 | 195 |
PN 25 – dimension table (DN 10–150)
| DN | Thread 1 | n × ØL (mm) | M 2 | Ød₁ (mm) | ØK (mm) | ØD (mm) | C₂ (mm) 3 | H₁ (mm) | N₂ (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Rp 3/8 | 4 × 14 | M12 | 40 | 60 | 90 | 16 | 22 | 30 |
| 15 | Rp 1/2 | 4 × 14 | M12 | 45 | 65 | 95 | 16 | 22 | 35 |
| 20 | Rp 3/4 | 4 × 14 | M12 | 58 | 75 | 105 | 18 | 26 | 45 |
| 25 | Rp 1 | 4 × 14 | M12 | 68 | 85 | 115 | 18 | 28 | 52 |
| 32 | Rp 1 1/4 | 4 × 18 | M16 | 78 | 100 | 140 | 18 | 30 | 60 |
| 40 | Rp 1 1/2 | 4 × 18 | M16 | 88 | 110 | 150 | 18 | 32 | 70 |
| 50 | Rp 2 | 4 × 18 | M16 | 102 | 125 | 165 | 20 | 34 | 84 |
| 65 | Rp 2 1/2 | 8 × 18 | M16 | 122 | 145 | 185 | 22 | 38 | 104 |
| 80 | Rp 3 | 8 × 18 | M16 | 138 | 160 | 200 | 24 | 40 | 118 |
| 100 | Rp 4 | 8 × 22 | M20 | 162 | 190 | 235 | 24 | 44 | 145 |
| 125 | Rp 5 | 8 × 26 | M24 | 188 | 220 | 270 | 26 | 48 | 170 |
| 150 | Rp 6 | 8 × 26 | M24 | 218 | 250 | 300 | 28 | 52 | 200 |
PN 40 – dimension table (DN 10–150)
| DN | Thread 1 | n × ØL (mm) | M 2 | Ød₁ (mm) | ØK (mm) | ØD (mm) | C₂ (mm) 3 | H₁ (mm) | N₂ (mm) |
|---|---|---|---|---|---|---|---|---|---|
| 10 | Rp 3/8 | 4 × 14 | M12 | 40 | 60 | 90 | 16 | 22 | 30 |
| 15 | Rp 1/2 | 4 × 14 | M12 | 45 | 65 | 95 | 16 | 22 | 35 |
| 20 | Rp 3/4 | 4 × 14 | M12 | 58 | 75 | 105 | 18 | 26 | 45 |
| 25 | Rp 1 | 4 × 14 | M12 | 68 | 85 | 115 | 18 | 28 | 52 |
| 32 | Rp 1 1/4 | 4 × 18 | M16 | 78 | 100 | 140 | 18 | 30 | 60 |
| 40 | Rp 1 1/2 | 4 × 18 | M16 | 88 | 110 | 150 | 18 | 32 | 70 |
| 50 | Rp 2 | 4 × 18 | M16 | 102 | 125 | 165 | 20 | 34 | 84 |
| 65 | Rp 2 1/2 | 8 × 18 | M16 | 122 | 145 | 185 | 22 | 38 | 104 |
| 80 | Rp 3 | 8 × 18 | M16 | 138 | 160 | 200 | 24 | 40 | 118 |
| 100 | Rp 4 | 8 × 22 | M20 | 162 | 190 | 235 | 24 | 44 | 145 |
| 125 | Rp 5 | 8 × 26 | M24 | 188 | 220 | 270 | 26 | 48 | 170 |
| 150 | Rp 6 | 8 × 26 | M24 | 218 | 250 | 300 | 28 | 52 | 200 |
How to order unambiguously: the designation to EN 1092-1
The standard specifies a consistent designation system: Flange EN 1092-1, then type and sealing face form, nominal size, pressure rating and material. For type 13, the thread form (Rp or Rc) is also part of the designation. A threaded flange with sealing face form B1, DN 50, PN 16, cylindrical thread Rp in S235JR is therefore designated:
Flange EN 1092-1/13 B1/DN 50/PN 16/Rp/S235JR
As the threaded flange has neither a bore nor a weld end, additional details such as hub wall thickness are not required – DN, PN, sealing face form and material are sufficient for an unambiguous order.
1 Internal thread Rp (cylindrical) to ISO 7-1 / EN 10226-1, gauging to EN 10226-3; tapered (Rc) on request – the thread form is part of the designation, see the ordering example.
2 M = metric bolt size to EN 1092-1; the bolt-hole diameter ØL is always larger than the bolt thread.
3 Plate thickness C₂ including raised-face height f₁ (sealing face form B1).
4 DN 65 has 8 bolt holes at PN 10 and PN 16 to EN 1092-1. Older flanges to DIN 2501 have 4 holes here and are still common in existing plant – check the bolt-hole pattern for replacement and extension orders.
EN 1092-1 gives no indicative weights for threaded flanges – we are happy to quote weights on request. For DN 10 to DN 40 the dimensions of pressure ratings PN 10, PN 16 and PN 25 are identical to PN 40; for DN 50 to DN 150 this applies to PN 10 with PN 16 and to PN 25 with PN 40 respectively.
Order blind flanges
Already know DN, PN and material? Zickwolff supplies blind flanges to EN 1092-1 in carbon and stainless steel, in all common pressure ratings – from Germany, across Europe.
Send us your inquiryTechnical basis: EN 1092-1. All information without guarantee – the current standard texts and the manufacturers’ technical data sheets always prevail. Values selected according to our delivery and stock programme; compiled from our own ERP data and long-standing trading practice, cross-checked against publicly available manufacturer information and reference tables. These tables do not replace the standard text – the current edition of the standard always governs. Editorially reviewed: August 2026. Standards and manufacturer status considered: August 2026.