Small Diameter Stainless Steel Tubing Fabricator
Metric Hypodermic Tubing GaUge Chart
(All dimensions in mm)
Metric tubing is stocked in seamless as well as welded and drawn. NEST carries metric tubing based on current customer needs and some sizes may not be available.
The metric chart below is a conversion of the standard hypodermic chart, which is also commonly used in applications that use metric standards.
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XHW:Extra Heavy Wall | HW: Heavy Wall | RW: Regular Wall | TW: Thin Wall | XTW: Extra Thin Wall | UTW: Ultra Thin Wall
More Sizes and Wall Thicknesses Available. 
| GAUGE SIZE | NOM. OD | OD RANGE | NOM. WALL | NOM. ID | ID RANGE |
|---|---|---|---|---|---|
6RW |
5.15 | 5.13/5.18 | .381 | 4.39 | 4.32/4.47 |
7RW |
4.57 | 4.57/4.60 | .381 | 3.81 | 3.73/3.89 |
8RW |
4.19 | 4.17/4.22 | .381 | 3.43 | 3.35/3.51 |
9RW |
3.76 | 3.74/3.78 | .381 | 3.00 | 2.92/3.07 |
10RW |
3.40 | 3.38/3.43 | .356 | 2.69 | 2.64/2.74 |
11RW |
3.05 | 3.02/3.07 | .330 | 2.39 | 2.34/2.44 |
11TW |
3.02 | 3.02/3.07 | .254 | 2.54 | 2.49/2.59 |
12RW |
2.77 | 2.74/2.79 | .305 | 2.16 | 2.11/2.21 |
12TW |
2.77 | 2.74/2.79 | .229 | 2.31 | 2.26/2.36 |
13RW |
2.41 | 2.39/2.44 | .305 | 1.80 | 1.75/1.85 |
13TW |
2.41 | 2.39/2.44 | .229 | 1.96 | 1.91/2.01 |
13XTW |
2.41 | 2.39/2.44 | .127 | 2.16 | 2.11/2.21 |
14RW |
2.11 | 2.08/2.13 | .254 | 1.60 | 1.55/1.65 |
14TW |
2.11 | 2.08/2.13 | .203 | 1.70 | 1.68/1.74 |
14XTW |
2.11 | 2.08/2.13 | .140 | 1.83 | 1.80/1.85 |
15RW |
1.83 | 1.82/1.84 | .229 | 1.37 | 1.33/1.41 |
15TW |
1.83 | 1.82/1.84 | .152 | 1.52 | 1.51/1.56 |
15XTW |
1.83 | 1.82/1.84 | .114 | 1.59 | 1.56/1.62 |
16RW |
1.65 | 1.64/1.66 | .229 | 1.19 | 1.16/1.23 |
16TW |
1.65 | 1.64/1.66 | .152 | 1.36 | 1.33/1.38 |
16XTW |
1.65 | 1.64/1.66 | .114 | 1.41 | 1.38/1.44 |
17RW |
1.47 | 1.46/1.49 | .203 | 1.07 | 1.03/1.10 |
17TW |
1.47 | 1.46/1.49 | .127 | 1.21 | 1.18/1.23 |
17XTW |
1.47 | 1.46/1.49 | .102 | 1.27 | 1.24/1.30 |
18RW |
1.27 | 1.26/1.28 | .216 | 0.84 | 0.80/0.88 |
18TW |
1.27 | 1.26/1.28 | .152 | 0.98 | .095/1.00 |
18XTW |
1.27 | 1.26/1.28 | .101 | 1.07 | 1.04/1.09 |
19TW |
1.07 | 1.05/1.08 | .127 | 0.81 | 0.80/0.85 |
19XTW |
1.07 | 1.05/1.08 | .089 | 0.89 | 0.86/0.91 |
20RW |
0.91 | 0.90/0.91 | .152 | 0.61 | 0.58/0.62 |
20TW |
0.91 | 0.90/0.91 | .127 | 0.66 | 0.65/0.69 |
20XTW |
0.91 | 0.90/0.91 | .100 | 0.71 | 0.69/0.72 |
21RW |
0.81 | 0.81/0.83 | .152 | 0.51 | 0.50/0.53 |
21TW |
.0.81 | 0.81/0.83 | .0114 | 0.58 | 0.57/0.61 |
21XTW |
0.81 | 0.81/0.83 | 0.89 | 0.64 | 0.62/0.66 |
22RW |
0.71 | 0.71/0.72 | .152 | 0.41 | 0.39/0.43 |
22TW |
0.71 | 0.71/0.72 | .102 | 0.51 | 0.48/0.52 |
22XTW |
0.71 | 0.71/0.72 | .075 | 0.56 | 0.52/0.56 |
23RW |
0.64 | 0.64/0.65 | .152 | 0.33 | 0.32/0.36 |
23TW |
0.64 | 0.64/0.65 | .102 | 0.43 | 0.42/0.46 |
23XTW |
0.64 | 0.64/0.65 | .075 | 0.48 | 0.47/0.51 |
24RW |
0.56 | 0.56/0.57 | .127 | 0.31 | 0.29/0.33 |
24TW |
0.56 | 0.56/0.57 | .102 | 0.37 | 0.34/0.39 |
24XTW |
0.56 | 0.51/0.52 | .075 | 0.36 | 0.34/0.43 |
25TW |
0.51 | 0.51/0.52 | .102 | 0.31 | 0.29/0.33 |
25XTW |
0.51 | 0.51/0.52 | .075 | 0.36 | 0.34/0.38 |
26RW |
0.46 | 0.46/0.47 | .102 | 0.25 | 0.24/0.28 |
26TW |
0.46 | 0.46/0.47 | .076 | 0.31 | 0.29/0.34 |
26XTW |
0.46 | 0.46/0.47 | .050 | 0.36 | 0.33/0.37 |
27RW |
0.41 | 0.41/0.42 | .102 | 0.20 | 0.19/0.23 |
27TW |
0.41 | 0.41/0.42 | .076 | 0.25 | 0.24/0.28 |
27XTW |
0.41 | 0.41/0.42 | .050 | 0.31 | 0.29/0.33 |
View The Fractional Tubing Charts or Hypodermic Tubing Charts
New England Small Tube can help throughout the manufacturing cycle from conception through prototyping and into production.
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