Main Tube
(nominal size)
Outer Diameter Thickness Inner Diameter Hexagon Nut
OD t ID A E
8A 13.8 1.65 10.5
10A 17.3 1.65 14
15A 21.7 2.1(※1.65) 17.5(※18.4)
1.0S 25.4 1.2 23 46.0 30.0
1.25S 31.8 1.2 29.4
1.5S 38.1 1.2 35.7 56.0 30.0
2.0S 50.8 1.5 47.8 71.0 30.0
2.5S 63.5 2.0 59.5 85.0 30.0
3.0S 76.3 2.0 72.3 100.0 30.0
3.5S 89.1 2.0 85.1
4.0S 101.6 2.0 97.6 136.0 38.0