Dimensions Threaded Flanges & Stud Bolts ASME B16.5
OTHER DIAMETERS
NPS 2
| CLass | 150 | 300 | 600 | 900 | 1500 | 2500 |
| DIA A |
78 | 84 | 84 | 105 | 105 | 95 |
| DIA D |
150 | 165 | 165 | 215 | 215 | 235 |
| THK B |
17.5 | 20.7 | 25.4 | 38.1 | 38.1 | 50.9 |
| 19.1 | 22.3 | 31.8 | 44.5 | 44.5 | 57.3 | |
| DIA G |
91.9 | 91.9 | 91.9 | 91.9 | 91.9 | 91.9 |
| DIA K |
120.7 | 127 | 127 | 165.1 | 165.1 | 171.4 |
| H | 24 | 32 | 37 | 57 | 57 | 70 |
| 25.6 | 33.6 | 43.4 | 63.4 | 63.4 | 76.4 | |
| NO. L |
4 | 8 | 8 | 8 | 8 | 8 |
| DIA L |
19.1 | 19.1 | 19.1 | 25.4 | 25.4 | 28.6 |
| Stud Bolts Diameter x Length | ||||||
| DIA (in) |
5/8 | 5/8 | 5/8 | 7/8 | 7/8 | 1 |
| Lenght (mm) |
85 | 90 | 110 | 145 | 145 | 180 |
Notes..
- Dimensions are in millimeters unless otherwise indicated.
- The length of the Stud Bolt does not include the height of the chamfers (points).
Dimensional Tolerances of Threaded Flanges ASME B16.5
Outside Diameter *
Tolerances not listed in ASME B16.5 2013
≤ 24 = 1.6 mm
> 24 = ± 3.2 mm
Tolerances not listed in ASME B16.5 2013
≤ 24 = 1.6 mm
> 24 = ± 3.2 mm
Inside Diameter
Within Limits on Boring Gauge
Within Limits on Boring Gauge
Drilling
Bolt Circle = 1.6 mm
Bolt Hole Spacing = ± 0.8 mm
Bolt Circle = 1.6 mm
Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle
≤ 2.1/2 = 0.8 mm max.
≥ 3 = 1.6 mm max.
≤ 2.1/2 = 0.8 mm max.
≥ 3 = 1.6 mm max.
Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm
≥ 14 = ± 3.2 mm
≤ 12 = + 2.4 mm / - 1.6 mm
≥ 14 = ± 3.2 mm
Diameter of Counterbore
Same as forInside Diameter
Same as forInside Diameter
Thickness
≤ 18 = + 3.2 mm / - 0
≥ 20 = + 4.8 mm / - 0
≤ 18 = + 3.2 mm / - 0
≥ 20 = + 4.8 mm / - 0
Length thru Hub
≤ 18 = + 3.2 mm / - 0.8 mm
≥ 20 = + 4.8 mm / - 1.6 mm
≤ 18 = + 3.2 mm / - 0.8 mm
≥ 20 = + 4.8 mm / - 1.6 mm
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face
Tongue and Groove / Male-Female
± 0.4 mm
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face
Tongue and Groove / Male-Female
± 0.4 mm
Studs are measured parallel to the axis (L) from the first to the thread without the chamfers (points). S = free threads equals 1/3 time bolt dia
Hex bolts are measured from under the head to the top of de bolt
Piping related Abbreviations
Not piping related
