A Series Tubular Clamps size conversion chart

Size
Tube O/D Dia (mm)
Tube O/D Dia (inches)
Nominal Bore (mm)
Nominal Bore (inches)
5
26.9
1 1/16”
20
3/4”
6
33.7
1 11/32”
25
1”
7
42.4
1 11/16”
32
1 1/4”
8
48.3
1 29/32”
40
1 1/2”
9
60.3
2 3/8”
51
2”