Dimensions Threaded Flanges & Stud Bolts ASME B16.5
| OTHER DIA | NPS 1 | |||||
| CLass | 150 | 300 | 600 | 900 | 1500 | 2500 |
| DIA A | 49.2 | 54 | 54 | 52 | 52 | 57 |
| DIA D | 110 | 125 | 125 | 150 | 150 | 160 |
| THK B | 14.3 | 17.5 | 23.9 | 35 | 35 | 41.4 |
| DIA G | 50.8 | 50.8 | 50.8 | 50.8 | 50.8 | 50.8 |
| DIA K | 79.4 | 88.9 | 88.9 | 101.6 | 101.6 | 108 |
| H | 17.6 | 26.6 | 33.4 | 47.4 | 47.4 | 54.4 |
| NO. L | 4 | 4 | 4 | 4 | 4 | 4 |
| DIA L | 15.9 | 19.1 | 19.1 | 25.4 | 25.4 | 25.4 |
| Stud Bolts Diameter x Length | ||||||
| DIA (in) | 1/2 | 5/8 | 5/8 | 7/8 | 7/8 | 7/8 |
| lgth (mm) | 65 | 75 | 90 | 125 | 125 | 140 |
Notes..
- Dimensions are in millimeters unless otherwise indicated.
- The length of the Stud Bolt does not include the height of the chamfers (points).
- The length of the Stud Bolts includes one Spiral Wound Gasket with a 4.5mm thick sealing element, which is compressed to 3mm while tightening the Raised Face flange connection.
- Important! please read this short article
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
