Dimensions Socket Weld Flanges & Stud Bolts ASME B16.5

OTHER DIAMETERS

2.1/2

NPS 2.1/2 - ID = 74.7 - F = 19.1

Notes..

Dimensions are in millimeters unless otherwise indicated.
The length of the Stud Bolt does not include the height of the chamfers (points).
ID₂ = Depending on the wall thickness of the pipe, must be specified by the purchaser.

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

Dimensional Tolerances of Socket Weld Flanges ASME B16.5

Outside Diameter *
Tolerances not listed in ASME B16.5 2013
≤ 24 = 1.6 mm
> 24 = ± 3.2 mm

Inside Diameter
≤ 10 = ± 0.8 mm
≥ 12 = + 1.6 mm / - 0 mm

Outside Diameter of Hub
≤ 12 = + 2.4 mm / - 1.6 mm
≥ 14 = ± 3.2 mm

Diameter of Counterbore
Same as for Inside Diameter

Drilling
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.

Thickness
≤ 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

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

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Created on June 2, 2014

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