Dimensions Socket Weld Flanges & Stud Bolts ASME B16.5

Socket Weld flange

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	...
THK B	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	...
H	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	1/2	3/4	1	1.1/4	1.1/2	2	2.1/2

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.

Measuring lengths of Stud Bolts and Hex Bolts

Menu Flanges

Definition & Details of Flanges

Special Flanges

Dims & Tolerances ASME B16.5

Dims Weld Neck Flanges Blind Flanges ASME B16.47

Dims Orifice Flanges RF

Class 300-2500

Dims Orifice Flanges RTJ

Class 600-2500

Dims Ring Joint Facings ASME B16.5 Class 150-2500

Class 150

Dims & Tolerances [Inches] ASME B16.5

Welding Neck Flanges

API Specification 6A

Dims 6B Flanges

BS 3293 Flange Dimensions

Weld Neck and Slip-On flanges

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

EXPLORE the WORLD of PIPING

© Werner Sölken 2008 - . All rights reserved.

You only live once, but if you do it right, once is enough. Mae West