Small Diameter Stainless Steel Tubing Fabricator
Hypodermic Tubing Gauge Chart
Standard hypodermic tubing is most commonly welded and plug drawn for a smooth and consistent ID finish throughout. Tolerances are typically held tighter than other draw types and more economical due to the ease of manufacturing.
NEST stocks all of the listed standard sizes in type 304 and 316. Other alloys are available but may not be stock at all times.
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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 | .203 | .202/.204 | .015 | .173 | .170/.176 |
| 6TW | .203 | .202/.204 | .010 | .183 | .181/.185 |
| 6.5 | .187 | .187/.189 | .010 | .168 | .165/.171 |
| 7RW | .180 | .179/.181 | .015 | .150 | .147/.153 |
| 7TW | .180 | .179/.181 | .010 | .160 | .158/.162 |
| 8RW | .165 | .164/.166 | .0155 | .135 | .132/.138 |
| 8TW | .165 | .164/.166 | .010 | .145 | .143/.147 |
| 9RW | .148 | .147/.149 | .015 | .118 | .115/.121 |
| 9TW | .148 | .147/.149 | .010 | .128 | .126/.130 |
| 9.5 | .141 | .140/.142 | .011 | .119 | .117/.121 |
| 10RW | .134 | .133/.135 | .014 | .106 | .104/.108 |
| 10TW | .134 | .133/.135 | .010 | .114 | .112/.116 |
| 10XTW | .134 | .133/.135 | .008 | .118 | .116/.120 |
| 11RW | .120 | .119/.121 | .013 | .094 | .092/.096 |
| 11TW | .120 | .119/.121 | .010 | .100 | .098/.102 |
| 11XTW | .120 | .119/.121 | .007 | .106 | .104/.108 |
| 12RW | .109 | .108/.110 | .012 | .085 | .083/.087 |
| 12TW | .109 | .108/.110 | .009 | .091 | .089/.093 |
| 12XTW | .109 | .108/.110 | .006 | .097 | .095/.099 |
| 13RW | .095 | .094/.096 | .012 | .071 | .069/.073 |
| 13TW | .095 | .094/.096 | .009 | .077 | .075/.079 |
| 13XTW | .095 | .094/.096 | .005 | .085 | .083/.087 |
| 13.5 | .089 | .088/.090 | .009 | .071 | .069/073 |
| 14HW | .083 | .082/.084 | .020 | .043 | .0425/.044 |
| 14RW | .083 | .082/.084 | .010 | .063 | .0601/.065 |
| 14TW | .083 | .082/.084 | .008 | .067 | .0660/.0685 |
| 14XTW | .083 | .082/.084 | .005 | .072 | .0710/.0730 |
| 15RW | .072 | .0715/.0725 | .009 | .054 | .0525/.0555 |
| 15TW | .072 | .0715/.0725 | .006 | .0605 | .0595/.0615 |
| 15XTW | .072 | .0715/.0725 | .005 | .063 | .0620/.0635 |
| 15UTW | .072 | .0715/.0725 | .004 | .064 | .0635/.0655 |
| 16RW | .065 | .0645/.0655 | .009 | .047 | .0455/.0485 |
| 16TW | .065 | .0645/.0655 | .006 | .0535 | .0525/.0545 |
| 16XTW | .065 | .0645/.0655 | .005 | .056 | .0545/.0565 |
| 17RW | .058 | .0575/.0585 | .008 | .042 | .0405/.0435 |
| 17TW | .058 | .0575/.0585 | .005 | .0475 | .0465/.0485 |
| 17XTW | .058 | .0575/.0585 | .004 | .050 | .0490/.0510 |
| 17UTW | .058 | .0575/.0585 | .0035 | .052 | .0510/.0530 |
| 18RW | .050 | .0495/.0505 | .0085 | .033 | .0315/.0345 |
| 18TW | .050 | .0495/.0505 | .006 | .038 | .0375/.0395 |
| 18XTW | .050 | .0495/.0505 | .004 | .042 | .0410/.0430 |
| 18UTW | .050 | .0495/.0505 | .003 | .044 | .0430/.0455 |
| 19XHW | .042 | .0415/.0425 | .0115 | .019 | .0180/.0200 |
| 19HW | .042 | .0415/.0425 | .0095 | .023 | .0220/.0240 |
| 19RW | .042 | .0415/.0425 | .0075 | .027 | .0255/.0285 |
| 19TW | .042 | .0415/.0425 | .005 | .032 | .0315/.0335 |
| 19XTW | .042 | .0415/.0425 | .0035 | .035 | .0340/.0360 |
| 19UTW | .042 | .0415/.0425 | .002 | .037 | .0360/.0380 |
| 20XHW | .036 | .0355/.0360 | .0095 | .016 | .0150/.0170 |
| 20RW | .036 | .0355/.0360 | .006 | .024 | .0230/.0245 |
| 20TW | .036 | .0355/.0360 | .005 | .026 | .0255/.0270 |
| 20XTW | .036 | .0355/.0360 | .004 | .027 | .0270/.0285 |
| 21HW | .032 | .0320/.0325 | .008 | .016 | .0150/.0170 |
| 21RW | .032 | .0320/.0325 | .006 | .020 | .0195/.0210 |
| 21TW | .032 | .0320/.0325 | .0045 | .023 | .0225/.0240 |
| 21XTW | .032 | .0320/.0325 | .0035 | .025 | .0245/.0260 |
| 22RW | .028 | .0280/.0285 | .006 | .016 | .0155/.0170 |
| 22TW | .028 | .0280/.0285 | .004 | .020 | .0190/.0205 |
| 22XTW | .028 | .0280/.0285 | .003 | .022 | .0205/.0220 |
| 23RW | .025 | .0250/.0255 | .006 | .013 | .0125/.0140 |
| 23TW | .025 | .0250/.0255 | .004 | .017 | .0165/.0180 |
| 23XTW | .025 | .0250/.0255 | .003 | .019 | .0185/.0200 |
| 23UTW | .025 | .0250/.0255 | .0025 | .020 | .0195/.0210 |
| 24RW | .022 | .0220/.0225 | .005 | .012 | .0115/.0130 |
| 24TW | .022 | .0220/.0225 | .004 | .0145 | .0135/.0155 |
| 24XTW | .022 | .0220/.0225 | .003 | .016 | .0155/.0170 |
| 25RW | .020 | .0200/.0205 | .005 | .010 | .0095/.0110 |
| 25TW | .020 | .0200/.0205 | .004 | .012 | .0115/.0130 |
| 25XTW | .020 | .0200/.0205 | .003 | .014 | .0135/.0150 |
| 25UTW | .020 | .0200/.0205 | .002 | .016 | .0155/.0170 |
| 26RW | .018 | .0180/.0185 | .004 | .010 | .0095/.0110 |
| 26TW | .018 | .0180/.0185 | .003 | .012 | .0115/.0130 |
| 26XTW | .018 | .0180/.0185 | .002 | .014 | .0130/.0145 |
| 27RW | .016 | .0160/.0165 | .004 | .008 | .0075/.0090 |
| 27TW | .016 | .0160/.0165 | .003 | .010 | .0095/.0110 |
| 27XTW | .016 | .0160/.0165 | .002 | .012 | .0115/.0130 |
| 28RW | .014 | .0140/.0145 | .0035 | .007 | .0065/.0080 |
| 28TW | .014 | .0140/.0145 | .0025 | .009 | .0085/.0100 |
| 28XTW | .014 | .0140/.0145 | .002 | .010 | .0100/.0110 |
| 29RW | .013 | .0130/.0135 | .003 | .007 | .0065/.0080 |
| 29TW | .013 | .0130/.0135 | .0025 | .0085 | .0080/.0090 |
| 29XTW | .013 | .0130/.0135 | .002 | .009 | .0090/.0100 |
| 30RW | .012 | .0120/.0125 | .003 | .006 | .0055/.0070 |
| 30TW | .012 | .0120/.0125 | .0025 | .007 | .0070/.0080 |
| 30XTW | .012 | .0120/.0125 | .002 | .008 | .0075/.0090 |
View The Metric Tubing Charts or Fractional Tubing Charts
New England Small Tube can help throughout the manufacturing cycle from conception through prototyping and into production.
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