Dimensional Data of Socket weld Fittings
1/8" to 4" class 3000 socket weld, 1/8" to 4" class 6000 socket weld, 1/2" to 2 " class 9000 socket weld
Class 3000   1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
A 7/8 7/8 31/32 1 1/8 1 5/16 1 1/2 1 3/4 2 2 3/8 3 3 3/8 4 3/16
B 29/32 29/32 1 1/16 1 5/16 1 9/16 1 27/32 2 7/32 2 1/2 3 1/32 3 11/16 4 5/16 5 3/4
C 0.420 0.555 0.690 0.855 1.065 1.330 1.675 1.915 2.406 2.906 3.535 4.545
D 3/8 3/8 3/8 3/8 1/2 1/2 1/2 1/2 5/8 5/8 5/8 3/4
E 7/16 7/16 17/32 5/8 3/4 7/8 1 1/16 1 1/4 1 1/2 1 5/8 2 1/4 2 5/8

Class 6000   1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
A - - - 1 5/16 1 1/2 1 3/4 2 2 3/8 2 1/2 3 1/4 3 3/4 4 1/2
B - - - 1 9/16 1 27/32 2 7/32 2 1/2 3 1/32 3 11/32 4 4 3/4 6
C - - - 0.855 1.065 1.330 1.675 1.915 2.406 2.906 3.535 4.545
D - - - 3/8 1/2 1/2 1/2 1/2 5/8 5/8 5/8 3/4
E - - - 3/4 7/8 1 1/16 1 1/4 1 1/2 1 5/8 2 1/4 2 1/2 2 3/4

Class 9000 　 1/8 1/4 3/8 1/2 3/4 1 1 1/4 1 1/2 2 2 1/2 3 4
A - - - 1 1/2 1 3/4 2 2 3/8 2 1/2 3 - - -
B - - - 1 27/32 2 7/32 2 1/2 3 1/32 3 11/32 3 11/16 - - -
C - - - 0.855 1.065 1.330 1.675 1.915 2.406 - - -
D - - - 3/8 1/2 1/2 1/2 1/2 5/8 - - -
E - - - 1 1 1/8 1 1/4 1 3/8 1 1/2 2 1/8 - - -