Dimensions Threaded Flanges & Stud Bolts ASME B16.5
OTHER DIAMETERS
NPS 1.1/2
| CLass | 150 | 300 | 600 | 900 | 1500 | 2500 |
| DIA A |
65 | 70 | 70 | 70 | 70 | 79 |
| DIA D |
125 | 155 | 155 | 180 | 180 | 205 |
| THK B |
15.9 | 19.1 | 22.3 | 31.8 | 31.8 | 44.5 |
| 17.5 | 20.7 | 28.7 | 38.2 | 38.2 | 50.9 | |
| DIA G |
73.2 | 73.2 | 73.2 | 73.2 | 73.2 | 73.2 |
| DIA K |
98.4 | 114.3 | 114.3 | 123.8 | 123.8 | 146 |
| H | 21 | 29 | 32 | 44 | 44 | 60 |
| 22.6 | 31.6 | 38.4 | 50.4 | 50.4 | 66.4 | |
| NO. L |
4 | 4 | 4 | 4 | 4 | 4 |
| DIA L |
15.9 | 22.2 | 22.2 | 28.6 | 28.6 | 31.8 |
| Stud Bolts Diameter x Length | ||||||
| DIA (in) |
1/2 | 3/4 | 3/4 | 1 | 1 | 1.1/8 |
| Lenght (mm) |
70 | 90 | 110 | 140 | 140 | 170 |
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
