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Class 300


NOMINAL
SIZE		 COMMON DIMENSIONS
OUTSIDE DIA.
O. 		THK.
C		 RAISED FACE DIA.
R 		FILLET RADIUS
r
1/2 3 3/4 9/16 1 3/8 1/8
3/4 4 5/8 5/8 1 11/16 1/8
1 4 7/8 11/16 2 1/8
1 1/4 5 1/4 3/4 2 1/2 3/16
1 1/2 6 1/8 13/16 2 7/8 1/4
2 6 1/2 7/8 3 5/8 5/16
2 1/2 7 1/2 1 4 1/8 5/16
3 8 1/4 1 1/8 5 3/8
3 1/2 9 1 3/16 5 1/2 3/8
4 10 1 1/4 6 3/16 7/16
5 11 1 3/8 7 5/16 7/16
6 12 1/2 1 7/16 8 1/2 1/2
8 15 1 5/8 10 5/8 1/2
10 17 1/2 1 7/8 12 3/4 1/2
12 20 1/2 2 15 1/2
14 23 2 1/8 16 1/4 1/2
16 25 1/2 2 1/4 18 1/2 1/2
18 28 2 3/8 21 1/2
20 30 1/2 2 1/2 23 1/2
22 33 2 5/8 25 1/4 1/2
24 36 2 3/4 27 1/4 1/2


NOMINAL
SIZE		 BORE LENGTH THROUGH HUB
Welding
Neck
Socket
B1		 Slip-on

B2		 Lap
Joint
B3		 Welding
Neck
Y1		 Slip-on
Socket
Y2		 Lap
Joint
Y3
1/2
T
O

B
E

S
P
E
C
I
F
I
E
D

B
Y

P
U
R
C
H
A
S
E
R 		0.88 0.90 2 1/16 7/8 7/8
3/4 1.09 1.11 2 1/4 1 1
1 1.36 1.38 2 7/16 1 1/16 1 1/16
1 1/4 1.70 1.72 2 9/16 1 1/16 1 1/16
1 1/2 1.95 1.97 2 11/16 1 3/16 1 3/16
2 2.44 2.46 2 3/4 1 5/16 1 5/16
2 1/2 2.94 2.97 3 1 1/2 1 1/2
3 3.57 3.60 3 1/8 1 11/16 1 11/16
3 1/2 4.07 4.10 3 3/16 1 3/4 1 3/4
4 4.57 4.60 3 3/8 1 7/8 1 7/8
5 5.66 5.69 3 7/8 2 2
6 6.72 6.75 3 7/8 2 1/16 2 1/16
8 8.72 8.75 4 3/8 2 7/16 2 7/16
10 10.88 10.92 4 5/8 2 5/8 3 3/4
12 12.88 12.92 5 1/8 2 7/8 4
14 14.14 14.18 5 5/8 3 4 3/8
16 16.16 16.19 5 3/4 3 1/4 4 3/4
18 18.18 18.20 6 1/4 3 1/2 5 1/8
20 20.20 20.25 6 3/8 3 3/4 5 1/2
22 22.22 22.25 6 1/2 4 5 3/4
24 24.25 24.25 6 5/8 4 3/16 6

FLANGES
CLASS 300, ASME B16.5


Nominal
Size		 Min. Thread
Length
T		 Dia. counter
Bore Thd.
Q		 Depth of
Socket D		 Dia. Hub at
Bevel
A		 Hub Dia.
X		 DRILLING
- Bolt
Circle		 Dia.
Holes		 N¡ã of
Bolts
1/2 0.63 15/16 3/8 0.84 1 1/2 2 5/8 5/8 4
3/4 0.63 1 9/64 7/16 1.05 1 7/8 3 1/4 3/4 4
1 0.69 1 27/64 1/2 1.32 2 1/8 3 1/2 3/4 4
1 1/4 0.81 1 3/4 9/16 1.66 2 1/2 3 7/8 3/4 4
1 1/2 0.88 2 5/8 1.90 2 3/4 4 1/2 7/8 4
2 1.13 2 1/2 11/16 2.38 3 5/16 5 3/4 8
2 1/2 1.25 3 3/4 2.88 3 15/16 5 7/8 7/8 8
3 1.25 3 41/64 13/16 3.50 4 5/8 6 5/8 7/8 8
3 1/2 1.44 4 9/64 7/8 4.00 5 1/4 7 1/4 7/8 8
4 1.44 4 41/64 15/16 4.50 5 3/4 7 7/8 7/8 8
5 1.69 5 45/64 15/16 5.56 7 9 1/4 7/8 8
6 1.81 6 3/4 1 1/16 6.63 8 1/8 10 5/8 7/8 12
8 2.00 8 3/4 1 1/4 8.63 10 1/4 13 1 12
10 2.19 10 51/64 1 5/16 10.75 12 5/8 15 1/4 1 1/8 16
12 2.38 12 61/64 1 9/16 12.75 14 3/4 17 3/4 1 1/4 16
14 2.50 14 3/16 1 5/8 14.00 16 3/4 20 1/4 1 1/4 20
16 2.69 16 3/16 1 3/4 16.00 19 22 1/2 1 3/8 20
18 2.75 18 3/16 1 15/16 18.00 21 24 3/4 1 3/8 24
20 2.88 20 3/16 2 1/8 20.00 23 1/8 27 1 3/8 24
22 3.13 - 2 3/8 22.00 25 1/4 29 1/4 1 5/8 24
24 3.25 24 3/16 2 1/2 24.00 27 5/8 32 1 5/8 24


































 



 

Dia. of Bolts
(inches)		 LENGTH OF BOLTS Nominal Size
STUD BOLTS Hex Bolts
.06"
Raised Face
.06" Raised Face Ring Joint
1/2 2.50 3.00 2.25 1/2
5/8 3.00 3.50 2.50 3/4
5/8 3.00 3.50 2.50 1
5/8 3.25 3.75 2.75 1 1/4
3/4 3.50 4.00 3.00 1 1/2
5/8 3.50 4.00 3.00 2
3/4 4.00 4.50 3.25 2 1/2
3/4 4.25 4.75 3.50 3
3/4 4.25 5.00 3.75 3 1/2
3/4 4.50 5.00 3.75 4
3/4 4.75 5.25 4.25 5
3/4 4.75 5.50 4.25 6
7/8 5.50 6.00 4.75 8
1 6.25 6.75 5.50 10
1 1/8 6.75 7.25 5.75 12
1 1/8 7.00 7.50 6.25 14
1 1/4 7.50 8.00 6.50 16
1 1/4 7.75 8.25 6.75 18
1 1/4 8.00 8.75 7.25 20
1 1/4 8.25 - 7.50 22
1 1/2 9.00 10.00 8.00 24






























                           CLASS 400 AVAILABLE ON REQUEST.