Dimensions Socket Weld Flanges & Stud Bolts ASME B16.5

Socket Weld flange

Important Information

NPS 1/2 - ID = 22.3 - F = 9.5
CLass 150 300 600 900 1500 2500
DIA
A
30 38 38 ... 38 ...
DIA
D
90 95 95 ... 120 ...
THK
B
9.6 12.7 14.3 ... 22.3 ...
11.2 14.3 20.7 ... 28.7 ...
DIA
G
35.1 35.1 35.1 ... 35.1 ...
DIA
K
60.3 66.7 66.7 ... 82.6 ...
H 14 21 22 ... 32 ...
15.6 22.6 28.4 ... 38.4 ...
NO.
L
4 4 4 ... 4 ...
DIA
L
15.9 15.9 15.9 ... 22.2 ...
Stud Bolts Diameter x Length
DIA
(in)
1/2 1/2 1/2 ... 3/4 ...
Len
mm
55 65 75 ... 110 ...
Other Diameters
NPS 3/4 1 1.1/4 1.1/2 2 2.1/2
 

Notes:

Measuring lengths of Stud Bolts and Hex Bolts
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