× NPS 1/2 NPS 3/4 NPS 1 NPS 1.1/4 NPS 1.1/2 NPS 2 NPS 2.1/2  ▸ NPS 3 NPS 3.1/2 NPS 4 NPS 6 NPS 8 NPS 10 NPS 12 NPS 14 NPS 16 NPS 18 NPS 20 NPS 24

Dimensions Slip On Flanges & Stud Bolts ASME B16.5

Slip On flange
OTHER DIA NPS 3 ID 90.7
CLass 150 300 600 900 1500 2500
DIA A 108 117 117 127 ... ...
DIA D 190 210 210 240 ... ...
THK B 23.9 28.6 38.2 44.5 ... ...
DIA G 127 127 127 127 ... ...
DIA K 152.4 168.3 168.3 190.5 ... ...
H 30.6 42.6 52.4 60.4 ... ...
NO. L 4 8 8 8 ... ...
DIA L 19.1 22.2 22.2 25.4 ... ...
Stud Bolts Diameter x Length
DIA (in) 5/8 3/4 3/4 7/8 ... ...
 lgth (mm 90 110 125 145 ... ...

Notes..

  • Dimensions are in millimeters unless otherwise indicated.
  • The length of the Stud Bolt does not include the height of the chamfers (points).
  • ID = Depending on the wall thickness of the pipe, must be specified by the purchaser.
  • IMPORTANT! please read this short article

Dimensional Tolerances of Slip On 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

 


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

Measuring lengths of Stud Bolts

 

Hex bolts are measured from under the head to the top of de bolt


Measuring lengths of Hex bolts

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