NOW FIND THE "D", "E", & "F" DIMENSIONS IN THE TABLE BELOW
TO FIND YOUR PART NUMBER.
CONTACT ENGINEERING FOR HELP WITH GRAYED-OUT ITEMS.
Carbon Steel Part No. 304L SS Part No. 316L SS Part No.
O-RING STYLE FLANGE PART NUMBER - 304L Stainless Steel
SQ3 PATTERN
F
F
F
F
F
F
F
F
F
F
F
D
x
E
1/2" (.47)
3/4" (.61)
1" (.81)
1 1/4" (1.16)
1 1/2" (1.34)
2" (1.69)
2 1/2" (2.12)
3" (2.62)
3 1/2" (3.00)
4" (3.44)
5" (4.31)
1.438
x
1.438
6403-08-08D
6403-12-12D
6403-12-16D
6403-12-20D
6403-12-24D
6403-12-32D
6403-12-40D
6403-12-48D
6403-12-56D
6403-12-64D
6403-12-80D
2.000
x
2.000
6403-16-08D
6403-16-12D
6403-16-16D
6403-20-20D
6403-20-24D
6403-20-32D
6403-20-40D
6403-20-48D
6403-20-56D
6403-20-64D
6403-20-80D
2.750
x
2.750
6403-24-08D
6403-24-12D
6403-24-16D
6403-24-20D
6403-24-24D
6403-32-32D
6403-32-40D
6403-32-48D
6403-32-56D
6403-32-64D
6403-32-80D
3.750
x
3.750
6403-40-08D
6403-40-12D
6403-40-16D
6403-40-20D
6403-40-24D
6403-40-32D
6403-40-40D
6403-48-48D
6403-48-56D
6403-48-64D
6403-48-80D
4.250
x
4.250
6403-56-08D
6403-56-12D
6403-56-16D
6403-56-20D
6403-56-24D
6403-56-32D
6403-56-40D
6403-56-48D
6403-56-56D
6403-56-64D
6403-56-80D
5.000
x
5.000
6403-64-08D
6403-64-12D
6403-64-16D
6403-64-20D
6403-64-24D
6403-64-32D
6403-64-40D
6403-64-48D
6403-64-56D
6403-64-64D
6403-64-80D
6.000
x
6.000
6403-80-08D
6403-80-12D
6403-80-16D
6403-80-20D
6403-80-24D
6403-80-32D
6403-80-40D
6403-80-48D
6403-80-56D
6403-80-64D
6403-80-80D
