Metal Hose Fittings Guide

Size "A" "B"   Size "A" "B"

Male Nipple (MN)

1/4 1-1/2 3

Weld Nipple (W)

3/4 2-1/2 3
3/8 1-1/2 3 1 1-1/2 3
1/2 1-1/2 3 1-1/4 2-1/2 3
3/4 1-1/2 4 1-1/2 3 4
1 2 4 2 3 4
1-1/4 2 4 2-1/2 3 4
1-1/2 2 5 3 4 5
2 2-1/2 5 4 4 5
2-1/2 3 5 5 4 5
3 3 7 6 6 7
4 3 7 8 6 7
               

Hex Male (HM)

Size "A" "B"

Female Coupling (C)

Size "A" "B"
1/4 1 1-1/2 1/4 11/16 1-1/16
3/8 1 1-1/2 3/8 3/4 1-1/8
1/2 1 1-1/2 1/2 3/4 1-1/8
3/4 1-1/4 1-3/4 3/4 3/4 1-1/8
1 1-1/2 2 1 1 1-3/4
1-1/4 2 2-1/2 1-1/4 1 1-3/4
1-1/2 2-1/4 2-3/4 1-1/2 1 1-3/4
          2 1-1/4 2
          2-1/2 1-7/16 2-7/16
          3 1-5/8 2-5/8
          4 1-7/8 2-7/8
               
  Size "A" "B"   Size "A" "B"

Male Union (MU)

1/4 2-2/4 2-5/8

Female Union (FU)

1/4 1-7/16 2-1/16
3/8 2-1/2 3 3/8 1-5/8 2-1/8
1/2 2-3/4 3-1/4 1/2 1-13/16 2-3/16
3/4 3-1/8 3-7/8 3/4 2 2-1/2
1 3-3/8 4-3/8 1 3-3/16 3-3/16
1-1/4 3-3/4 4-3/4 1-1/4 3-7/16 3-7/16
1-1/2 4 5-1/4 1-1/2 3-5/8 3-5/8
      2 4 4
      2-1/2 4-1/4 4-1/4
      3 4-1/2 4-1/2
               
  Size "A" "B"   Size "A" "B"

Fixed Flange (F)

1 2 2-5/8

Floating Flange (V)

1 2 2-5/8
1-1/4 2 2-3/4 1-1/4 2 2-3/4
1-1/2 2 2-3/4 1-1/2 2 2-3/4
2 2-1/2 3-3/8 2 2-1/2 3-1/2
2-1/2 2-1/2 3-3/8 2-1/2 2-1/2 3-1/2
3 2-1/2 3-3/8 3 2-1/2 3-1/2
4 3 3-3/4 4 3 3-3/4
5 3 3-3/4 5 3 3-3/4
6 3-1/2 4-1/2 6 3-1/2 4-1/2
8 4 5 8 4 5