× 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 Lap Joint Flanges & Stud Bolts ASME B16.5

Lap Joint flange
OTHER DIA NPS 3 ID=91.4 r=10
CLass 150 300 600 900 1500 2500
DIA A 108 115 115 127 125 125
DIA D 190 210 210 240 265 305
THK B 23.9 28.6 31.8 38.1 47.7 66.7
DIA K 152.4 168.3 168.3 190.5 203.2 228.6
H 30 43 46 54 73 92
NO. L 4 8 8 8 8 8
DIA L 19.1 22.2 22.2 25.4 31.8 34.9
Stud Bolts Diameter x Length
DIA (in) 5/8 3/4 3/4 7/8 1.1/8 1.1/4
 lgth (mm 90 110 125 145 180 220

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 Lap Joint 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


Explore the World of Piping


© Werner Sölken 2008 -  
All rights reserved.
www.wermac.org uses Google Analytics

Privacy Policy

I must be old. I still believe in respect.