Hypodermic Tubing Size Chart Reference
Hypodermic tubing is sized based on the Birmingham Wire Gauge using the tubes Outside Diameter (Why the logo has a black font color for the "O" and the "D" in the word "Hypodermic"). The wall and the I.D. are what change. This chart calls out the O.D and the I.D. in ranges because most mills producing hypodermic tubing call it out this way on their certificates and test reports.
| Gauge Size |
Wall Ref.* |
O.D. |
I.D. |
O.D. (mm( |
I.D.(mm) |
| 6 |
Regular |
.202/.204 |
.170/.176 |
5.131/5.182 |
4.318/4.47 |
| 7 |
Regular |
.179/.181 |
.147/.153 |
4.547/4.597 |
3.734/3.886 |
| 8 |
Regular |
.164/.166 |
.132/.138 |
4.166/4.216 |
3.353/3.505 |
| 9 |
Regular |
.147/.149 |
.115/.121 |
3.734/3.785 |
2.921/3.073 |
| 10 |
X-Thin |
.133/.135 |
.1165/.120 |
3.378/3.429 |
2.946/3.048 |
| 10 |
Thin |
.133/.135 |
112/.116 |
3.378/3.429 |
2.845/2.946 |
| 10 |
Regular |
.133/.135 |
.104/.108 |
3.378/3.429 |
2.642/2.743 |
| 11 |
X-Thin |
.119/.121 |
.104/.108 |
3.023/3.073 |
2.642/2.743 |
| 11 |
Thin |
.119/.121 |
.098/.102 |
3.023/3.073 |
2.489/2.591 |
| 11 |
Regular |
.119/.121 |
.092/.096 |
3.023/3.073 |
2.337/2.438 |
| 12 |
X-Thin |
.108/.110 |
.099/.101 |
2.743/2.794 |
2.515/2.565 |
| 12 |
Thin |
.108/.110 |
.089/.093 |
2.743/2.794 |
2.261/2.362 |
| 12 |
Regular |
.108/.110 |
.083/.087 |
2.743/2.794 |
2.108/2.21 |
| 13 |
X-Thin |
.094/.096 |
.079/.087 |
2.388/2.438 |
2.007/2.21 |
| 13 |
Thin |
.094/.096 |
.075/.079 |
2.388/2.438 |
1.905/2.007 |
| 13 |
Regular |
.094/.096 |
.069/.073 |
2.388/2.438 |
1.753/1.854 |
| 14 |
X-Thin |
.082/.084 |
.071/.073 |
2.083/2.134 |
1.803/1.854 |
| 14 |
Thin |
.082/.084 |
.066/.0685 |
2.083/2.134 |
1.676/1.74 |
| 14 |
Regular |
.082/.084 |
.061/.065 |
2.083/2.134 |
1.549/1.651 |
| 15 |
X-Thin |
.0715/.0725 |
.062/.066 |
1.816/1.842 |
1.575/1.676 |
| 15 |
Thin |
.0715/.0725 |
.0595/.0615 |
1.816/1.842 |
1.511/1.562 |
| 15 |
Regular |
.0715/.0725 |
.0525/.0555 |
1.816/1.842 |
1.334/1.41 |
| 16 |
X-Thin |
.0645/.0655 |
.055/.058 |
1.638/1.664 |
1.397/1.473 |
| 16 |
Thin |
.0645/.0655 |
.0525/.0545 |
1.638/1.664 |
1.334/1.384 |
| 16 |
Regular |
.0645/.0655 |
.0455/.0485 |
1.638/1.664 |
1.156/1.232 |
| 17 |
X-Thin |
.0575/.0585 |
.049/.051 |
1.461/1.486 |
1.245/1.295 |
| 17 |
Thin |
.0575/.058 |
.0465/.0485 |
1.461/1.473 |
1.181/1.232 |
| 17 |
Regular |
.0575/.0585 |
.0405/.0435 |
1.461/1.486 |
1.029/1.105 |
| 18 |
X-Thin |
.0495/.0505 |
.0410/.043 |
1.257/1.283 |
1.041/1.092 |
| 18 |
Thin |
.0495/.0505 |
.0375/.0395 |
1.257/1.283 |
0.953/1.003 |
| 18 |
Regular |
.0495/.0505 |
.0315/.0345 |
1.257/1.283 |
0.8/0.876 |
| 19 |
X-Thin |
.0415/.0425 |
.034/.036 |
1.054/1.08 |
0.864/0.914 |
| 19 |
Thin |
.0415/.0425 |
.0315/.0335 |
1.054/1.08 |
0.8/0.851 |
| 19 |
Regular |
.0415/.0425 |
.0255/.0285 |
1.054/1.08 |
0.648/0.724 |
| 20 |
X-Thin |
.0355/.036 |
.026/.0285 |
0.902/0.914 |
0.66/0.724 |
| 20 |
Thin |
.0355/.036 |
.025/.027 |
0.902/0.914 |
0.635/0.686 |
| 20 |
Regular |
.0355/.036 |
.023/.0245 |
0.902/0.914 |
0.584/0.622 |
| 21 |
X-Thin |
.032/.0325 |
.028/.0295 |
0.813/0.826 |
0.711/0.749 |
| 21 |
Thin |
.032/.0325 |
.022/.024 |
0.813/0.826 |
0.559/0.61 |
| 21 |
Regular |
.032/.0325 |
.0195/.021 |
0.813/0.826 |
0.495/0.533 |
| 22 |
X-Thin |
.028/.0285 |
.0215/.023 |
0.711/0.724 |
0.546/0.584 |
| 22 |
Thin |
.028/.0285 |
.019/.0205 |
0.711/0.724 |
0.483/0.521 |
| 22 |
Regular |
.028/.0285 |
.0155/.017 |
0.711/0.724 |
0.394/0.432 |
| 23 |
X-Thin |
.025/.0255 |
.0185/.02 |
0.635/0.648 |
0.47/0.508 |
| 23 |
Thin |
.025/.0255 |
.0165/.018 |
0.635/0.648 |
0.419/0.457 |
| 23 |
Regular |
.025/.0255 |
.0125/.014 |
0.635/0.648 |
0.318/0.356 |
| 24 |
X-Thin |
.022/.0225 |
.0155/.017 |
0.559/0.572 |
0.394/0.432 |
| 24 |
Thin |
.022/.0225 |
.0135/.0155 |
0.559/0.572 |
0.343/0.394 |
| 24 |
Regular |
.022/.0225 |
.0115/.013 |
0.559/0.572 |
0.292/0.33 |
| 25 |
X-Thin |
.02/.0205 |
.0135/.015 |
0.508/0.521 |
0.343/0.381 |
| 25 |
Thin |
.02/.0205 |
.0115/.013 |
0.508/0.521 |
0.292/0.33 |
| 25 |
Regular |
.02/.0205 |
.0095/.011 |
0.508/0.521 |
0.241/0.279 |
| 26 |
Thin |
.018/.0185 |
.012/.014 |
0.457/0.47 |
0.305/0.356 |
| 26 |
Regular |
.018/.0185 |
.0095/.011 |
0.457/0.47 |
0.241/0.279 |
| 27 |
Thin |
.016/.0165 |
.0095/.011 |
0.406/0.419 |
0.241/0.279 |
| 27 |
Regular |
.016/.0165 |
.0075/.009 |
0.406/0.419 |
0.191/0.229 |
| 28 |
Thin |
.014/.0145 |
.0085/.0100 |
0.356/0.368 |
0.216/0.254 |
| 28 |
Regular |
.014/.0145 |
.0065/.008 |
0.356/0.368 |
0.165/0.203 |
| 29 |
Thin |
.013/.0135 |
.008/.009 |
0.33/0.343 |
0.203/0.229 |
| 29 |
Regular |
.013/.0135 |
.0065/.008 |
0.33/0.343 |
0.165/0.203 |
| 30 |
Thin |
.012/.0125 |
.0065/.008 |
0.305/0.318 |
0.165/0.203 |
| 30 |
Regular |
.012/.0125 |
.0055/.007 |
0.305/0.318 |
0.14/0.178 |
| 31 |
Regular |
.01/.0105 |
.0045/.0055 |
0.254/0.267 |
0.114/0.14 |
| 32 |
Regular |
.009/.0095 |
.0035/.005 |
0.229/0.241 |
0.089/0.127 |
| 33 |
Regular |
.008/.0085 |
.0035/.005 |
0.203/0.216 |
0.089/0.127 |
| Information provided by Component Supply Company |
| *Because each manufacturer's specifications can vary, we suggest you veiw this page before specifying dimentions |
|
