» Flange & Fitting » ASME B16.5 Class 300 Threaded Flange

ASME B16.5 Class 300 Threaded Flange

August 9, 2019

Technical Drawing

300LB Threaded flange drawing

A typical drawing for Class 300 threaded flange with raised face (RF), ASME B16.5.

Bolts for 300LB Threaded flange

Both machine bolt with nuts and stud bolt with nuts can be applied to 300# Threaded flange.

Dimensions of 300# Threaded Flanges

NPSDGXK
1/29534.93866.7
3/411542.94882.6
112550.85488.9
1-1/413563.56498.4
1-1/215573.070114.3
216592.184127.0
2-1/2190104.8100149.2
3210127.0117168.3
3-1/2230139.7133184.2
4255157.2146200.0
5280185.7178235.0
6320215.9206269.9
8380269.9260330.2
10445323.8321387.4
12520381.0375450.8
14585412.8425514.4
16650469.9483571.5
18710533.4533628.6
20775584.2587685.8
22840641.4640743.0
24915692.2702812.8
*D: outside diameter of flange; K: diameter of bolt circle; G: outside diameter of raised face; X: diameter of hub at base; For all  threaded flanges of class 300, t (height of raused face)=2mm. All units are mm.

NPShQYT
1/21623.62112.7
3/41629.02414.3
11835.82515.9
1-1/42144.42517.5
1-1/22350.32919.1
22963.53220.7
2-1/23276.23723.9
33292.24127.0
3-1/237104.94328.6
437117.64630.2
543144.44933.4
647171.45135.0
851222.26039.7
1056276.26546.1
1261328.67149.3
1464360.47552.4
1669411.28155.6
1870462.08758.8
2074512.89462.0
2210065.1
2483614.410568.3
*h: minimum thread length; Q:minimum diameter of counterbore; Y: length through hub;  T: minimum thickness of flange; All units are mm.

NPSndlLMass
1/245/81/2650.64
3/443/45/8751.12
143/45/8751.36
1-1/443/45/8851.68
1-1/247/83/4902.49
283/45/8902.87
2-1/287/83/41004.32
387/83/41105.85
3-1/287/83/41107.34
487/83/41159.61
587/83/412012.3
6127/83/412015.6
81217/814024.2
10161-1/8116034.1
12161-1/41-1/817049.8
14201-1/41-1/818069.9
16201-3/81-1/419088.1
18241-3/81-1/4195109
20241-3/81-1/4205134
22241-5/81-1/2230
24241-5/81-1/2230201
*n: number of bolts; d: diameter of bolt holes; l: diameter of bolts; L: length of stud bolts for 2 mm raised face; Mass: approximate weights/masses of the flange; All units are mm except that d and l are provided in inch, the weights are in kg.

ASME B16.5 Threaded Flange, Classes
150#300#400#600#
900#1500#2500#-
*Click to view the dimensions and weights of threaded flanges of each pressure rating.

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