Dimensions of Solder Joint Ends for Wrought (W) and Cast (C) Pressure Fittings, inches

Nominal or standard fittings size, inches Type Male end Female end For use with tube size
Outside diameter
A
Length
K
Inside diameter
F
Depth
G
under
ASTM
B 88
under
ASTM
B 280
under
ASTM
B 819
under
ASTM
B 837
Min. Max. Min. Min. Max. Min.
1/8   W .248 .251 .38 .252 .256 .31 * 1/4 * 1/4
1/4 C W .373 .376 .38 .377 .381 .31 1/4 3/8 1/4 3/8
3/8 C W .497 .501 .44 .502 .506 .38 3/8 1/2 3/8 1/2
1/2 C W .622 .626 .56 .627 .631 .50 1/2 5/8 1/2 5/8
5/8   W .747 .751 .81 .752 .756 .75 5/8 3/4 5/8 3/4
3/4 C W .872 .876 .81 .877 .881 .75 3/4 7/8 3/4 7/8
1 C W 1.122 1.127 .97 1.128 1.132 .91 1 1-1/8 1 1-1/8
1-1/4 C W 1.372 1.377 1.03 1.378 1.382 .97 1-1/4 1-3/8 1-1/4 *
1-1/2 C W 1.621 1.627 1.16 1.628 1.633 1.09 1-1/2 1-5/8 1-1/2 *
2 C W 2.121 2.127 1.41 2.128 2.133 1.34 2 2-1/8 2 *
2-1/2 C W 2.621 2.627 1.53 2.628 2.633 1.47 2-1/2 2-5/8 2-1/2 *
3 C W 3.121 3.127 1.72 3.128 3.133 1.66 3 3-1/8 3 *
3-1/2 C W 3.621 3.627 1.97 3.628 3.633 1.91 3-1/2 3-5/8 3-1/2 *
4 C W 4.121 4.127 2.22 4.128 4.133 2.16 4 4-1/8 4 *
5 C W 5.121 5.127 2.72 5.128 5.133 2.66 5 * 5 *
6 C W 6.121 6.127 3.22 6.128 6.133 3.09 6 * 6 *
8 C W 8.119 8.127 4.09 8.128 8.133 3.97 8 * 8 *
10 C   10.119 10.127 4.12 10.128 10.133 4.00 10 * * *
12 C   12.119 12.127 4.62 12.128 12.133 4.50 12 * * *
NOTE: * Copper tube under this standard is not commercially available.