Fractional Tubing Fractional tubing is often used in commercial applications that require corrosion resistance and good strength. MicroGroup fractional tubing starts at 1/32″ OD and is generally stocked in 304 stainless steel and 316 stainless steel but is also available in many other metals and alloys in a variety of specifications. It is typically stocked in the annealed temper condition and is available as welded tubing (welded and drawn) or seamless tubing.

Fractional stainless steel is normally available in commercial ratings such as ASTM-A-269, DFARS, ROHS, Mil-T-8504 and ASM-5570. Note that MicroGroup offers the in-house capability to produce custom sizes and hold the chemical composition of the starting specification to reduce lead times.

For sizes or alloys not listed below, or to place an order, call 800-255-8823. To purchase standard stock tubing please visit our Online Store .

Please Specify Fractional Tubing by: Standard Material

Grade Material 304 Stainless Steel Tubing 304L Stainless Steel Tubing 316 Stainless Steel Tubing 321 Stainless Steel Tubing 347 Stainless Steel Tubing 430 Stainless Steel Tubing Other Grades Call for Availability of Other Stainless Steel Tubing Alloys

Other Metals and Alloys

Grade Material 200 Nickel (“A” Nickel) 600 Inconel Alloy (Inconel is a registered trademark by Inco Alloys International ) 625 Inconel Alloy (Inconel is a registered trademark by Inco Alloys International ) C276 Hastelloy Alloy (Hastelloy is a registered trademark by Inco Alloys International ) Ti2 Unalloyed Titanium A-40 6061 Aluminum 101 Copper 122 Copper Other Grades Call for availability of other Nickel, Inconel, Titanium, Aluminum, Copper, Brass and other specialty metals or alloys

Tolerance Table

TOLERANCES F1-Standard Tol F2-Close Tol Tube Size OD (Inches) Tolerance OD (Inches) Tolerance Wall (%) Tolerance OD (Inches) Tolerance Wall (%) Less than 3/32 (.0938”) ±.005” ±15% +.002/-.000 ±10% 3/32 to < 3/16 (.1875”) ±.005” ±15% +.003/-.000 ±10% 3/16 to < 1/2 (.500”) ±.005” ±15% +.004/-.000 ±10% 1/2 to < 1-1/2 (1.500”) ±.005” ±10% +.005/-.000 ±10% 1-1/2 to < 3-1/2 ±.010” ±10% n/a n/a

Complete Listing and Specifications

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Complete Listing and Specifications – Fractional Tubing Products listed below in blue are available in our Online Store . Please call 800-255-8823 or request a quote for custom orders, products not available in our online store, custom lengths and large quantities.

Nominal Tube Size (Inches)

OD Wall ID

Item # (Base)

WD = Welded / SL = Seamless

Other SS Alloys

Other Nickel Alloys

1/32″(.0313″) .006 .019 F10032X006 X X 200 .79 mm .010 .011 F10032X010 X X 1/16″ .006 .051 F10062X006 X X X X 600 .0625″ .010 .043 F10062X010 X X X X 321, 347 200, 400, 600 1.59 mm .012 .039 F10062X012 X X 321 .016 .031 F10062X016 X X X X 321 200, 600 .020 .023 F10062X020 X 321 200, 600 .026 .011 F10062X026 X X .028 .007 F10062X028 X X 3/32″ .006 .082 F10093X006 X X X X .0938″ .010 .074 F10093X010 X X X X 321 600 2.38 mm .016 .062 F10093X016 X X X 321 600 .020 .054 F10093X020 X X X 321 600 .028 .038 F10093X028 X X 321 .035 .024 F10093X035 X X 1/8″ .006 .113 F10125X006 X X X .1250″ .010 .105 F10125X010 X X X X 321 600 3.18 mm .012 .101 F10125X012 X X 321, 347 600 .016 .093 F10125X016 X X X 321 600 .020 .085 F10125X020 X X X 321, 347 200, 400, 600 .025 .075 F10125X025 X .028 .069 F10125X028 X X X X 321, 347 200, 400, 600 .032 .061 F10125X032 X 321 .035 .055 F10125X035 X X X 321, 347 200, 400, 600 .042 .041 F10125X042 X X .049 .027 F10125X049 X X 321 5/32″ .006 .144 F10156X006 X X .1563″ .010 .136 F10156X010 X X X 3.97 mm .016 .124 F10156X016 X X X X 321 .020 .116 F10156X020 X X X X 321 .028 .100 F10156X028 X X X X 321 .035 .086 F10156X035 X X X 321 .049 .058 F10156X049 X X 321 3/16″ .006 .176 F10188X006 X X X .1875″ .010 .168 F10188X010 X X X X 321 600 4.76 mm .016 .156 F10188X016 X X X X 321 200, 600 .020 .148 F10188X020 X X X X 321, 347 600 .028 .132 F10188X028 X X X X 321, 347 200, 600 .035 .118 F10188X035 X X X X 310, 321, 347 200, 400, 600 .049 .090 F10188X049 X X X X 321, 347 600 .058 .072 F10188X058 X .065 .058 F10188X065 X X 7/32″ .006 .207 F10219X006 X .2188″ .010 .199 F10219X010 X X 321 5.56 mm .016 .187 F10219X016 X X .020 .180 F10219X020 X X .028 .163 F10219X028 X X .035 .149 F10219X035 X X 321 .049 .121 F10219X049 X X 1/4″ .006 .238 F10250X006 X X X .2500″ .010 .230 F10250X010 X X X X 600 6.35 mm .016 .218 F10250X016 X X X X 321, 347 600 .020 .210 F10250X020 X X X X 310, 321, 347 200, 400, 600 .028 .194 F10250X028 X X X X 310, 321, 347 200, 400, 600 .032 .186 F10250X032 X X X .035 .180 F10250X035 X X X X 310, 321, 347 200, 400, 600 .049 .152 F10250X049 X X X X 310, 321, 347 200, 400, 600 .058 .134 F10250X058 X X 321 .065 .120 F10250X065 X X X X 310, 321, 347 200, 400, 600 .083 .084 F10250X083 X X X X 321 .095 .060 F10250X095 X X 321 9/32″ .006 .269 F10281X006 X .2813″ .010 .261 F10281X010 X X 7.14 mm .016 .249 F10281X016 X X .020 .241 F10281X020 X X .028 .225 F10281X028 X X .035 .211 F10281X035 X X .049 .183 F10281X049 X 5/16″ .006 .301 F10312X006 X X .3125″ .010 .293 F10312X010 X X X 321 7.94 mm .016 .281 F10312X016 X X X 321 .020 .273 F10312X020 X X X X 321, 347 200, 600 .028 .257 F10312X028 X X X X 321, 347 600 .035 .243 F10312X035 X X X X 310, 321, 347 200, 400, 600 .049 .215 F10312X049 X X X X 310, 321, 347 600 .058 .197 F10312X058 X 321 .065 .183 F10312X065 X X X X 321 200, 600 .083 .147 F10312X083 X X 321 .095 .123 F10312X095 X X 321 .120 .073 F10312X120 X .125 .063 F10312X125 X X 11/32″ .010 .324 F10344X010 X X .3438″ .016 .312 F10344X016 X 8.73 mm .020 .304 F10344X020 X .028 .288 F10344X028 X .035 .274 F10344X035 X 3/8″ .006 .363 F10375X006 X .3750″ .010 .355 F10375X010 X X X 9.53 mm .016 .343 F10375X016 X X X 321 .020 .335 F10375X020 X X X X 321, 347 600 .028 .319 F10375X028 X X X X 321, 347 200, 400, 600 .035 .305 F10375X035 X X X X 310, 321, 347 200, 400, 600 .042 .291 F10375X042 X .049 .277 F10375X049 X X X X 310, 321, 347 200, 400, 600 .058 .259 F10375X058 X X .065 .245 F10375X065 X X X X 310, 321, 347 200, 400, 600 .083 .209 F10375X083 X X X X 321, 347 400, 600 .095 .185 F10375X095 X X X X 321, 347 .109 .157 F10375X109 X .120 .135 F10375X120 X X 321 .134 .107 F10375X134 X .156 .063 F10375X156 X 7/16″ .010 .418 F10437X010 X .4375″ .016 .406 F10437X016 X X X 11.11 mm .020 .398 F10437X020 X X X 321, 347 .028 .382 F10437X028 X X X X 321, 347 .035 .368 F10437X035 X X X X 321, 347 600 .049 .340 F10437X049 X X X X 321, 347 .058 .322 F10437X058 X 321 .065 .308 F10437X065 X X X 321 600 .083 .272 F10437X083 X X X 347 .095 .248 F10437X095 X X 321 .109 .220 F10437X109 X .120 .198 F10437X120 X X 321 1/2″ .006 .488 F10500X006 X .5000″ .010 .480 F10500X010 X X X 321 12.70 mm .016 .468 F10500X016 X X X 321 .020 .460 F10500X020 X X X X 321, 347 .028 .444 F10500X028 X X X X 310, 321, 347 200, 400, 600 .035 .430 F10500X035 X X X X 310, 321, 347 200, 400, 600 .049 .402 F10500X049 X X X X 310, 321, 347 200, 400, 600 .058 .384 F10500X058 X X 321 400, 600 .065 .370 F10500X065 X X X X 310, 321, 347 200, 400, 600 .083 .334 F10500X083 X X X X 310, 321, 347 400, 600 .095 .310 F10500X095 X X X X 321, 347 400, 600 .109 .282 F10500X109 X X 600 .120 .260 F10500X120 X X 310, 321, 347 400, 600 .125 .250 F10500X125 X X 347 .134 .232 F10500X134 X X 347 .156 .188 F10500X156 X X 321 .188 .124 F10500X188 X X 9/16″ .010 .543 F10562X010 X X .5625″ .016 .531 F10562X016 X X 321 14.29 mm .020 .523 F10562X020 X X .028 .507 F10562X028 X X X X 321 .035 .493 F10562X035 X X X X 321 400, 600 .049 .465 F10562X049 X X X X 321 600 .065 .433 F10562X065 X X X X 321 600 .083 .397 F10562X083 X X X 321 .095 .373 F10562X095 X X X .120 .323 F10562X120 X X .125 .313 F10562X125 X .156 .251 F10562X156 X X .188 .187 F10562X188 X X 5/8″ .010 .605 F10625X010 X X .6250″ .016 .593 F10625X016 X X 321 15.88 mm .020 .585 F10625X020 X X X X 321, 347 .028 .569 F10625X028 X X X X 321, 347 .035 .555 F10625X035 X X X X 310, 321, 347 200, 400, 600 .049 .527 F10625X049 X X X X 310, 321, 347 200, 400, 600 .058 .509 F10625X058 X X 321, 347 .065 .495 F10625X065 X X X X 310, 321, 347 200, 400, 600 .083 .459 F10625X083 X X X X 310, 321, 347 400, 600 .095 .435 F10625X095 X X X X 321 400, 600 .109 .407 F10625X109 X X .120 .385 F10625X120 X X 321 600 .125 .375 F10625X125 X .134 .357 F10625X134 X X .156 .313 F10625X156 X X .188 .249 F10625X188 X X 321 .250 .125 F10625X250 X 11/16″ .020 .648 F10688X020 X .6875″ .028 .632 F10688X028 X 321 17.46 mm .035 .618 F10688X035 X X 321 .049 .590 F10688X049 X X X X .065 .558 F10688X065 X X X X 321 .083 .522 F10688X083 X .095 .498 F10688X095 X .120 .448 F10688X120 X 3/4″ .010 .730 F10750X010 X X .7500″ .016 .718 F10750X016 X X 321 19.05 mm .020 .710 F10750X020 X X X 321, 347 .028 .694 F10750X028 X X X X 321, 347 600 .035 .680 F10750X035 X X X X 310, 321, 347 200, 400, 600 .049 .652 F10750X049 X X X X 310, 321, 347 200, 400, 600 .058 .634 F10750X058 X X 321 .065 .620 F10750X065 X X X X 310, 321, 347, 410 200, 400, 600 .083 .584 F10750X083 X X X X 310, 321, 347, 410 200, 400, 600 .095 .560 F10750X095 X X X X 321, 347 400, 600 .109 .532 F10750X109 X X X X 321 200, 400, 600 .120 .510 F10750X120 X X X X 310, 321, 347 200, 600 .125 .500 F10750X125 X X 321 400, 600 .134 .482 F10750X134 X X 321 .156 .438 F10750X156 X X 321 .188 .374 F10750X188 X X 321 .250 .250 F10750X250 X X 13/16″ .028 .757 F10812X028 X X 321 .8125″ .035 .743 F10812X035 X X 321 20.64 mm .049 .715 F10812X049 X X .065 .683 F10812X065 X X .083 .647 F10812X083 X X .095 .623 F10812X095 X 7/8″ .010 .855 F10875X010 X .8750″ .016 .843 F10875X016 X 22.23 mm .020 .835 F10875X020 X X .028 .819 F10875X028 X X .035 .805 F10875X035 X X X X 321, 347 400, 600 .049 .777 F10875X049 X X X X 310, 321, 347 400, 600 .058 .759 F10875X058 X .065 .745 F10875X065 X X X X 310, 321, 347 200, 400, 600 .083 .709 F10875X083 X X X X 321 200, 600 .095 .685 F10875X095 X X X X 321 .109 .657 F10875X109 X X .120 .635 F10875X120 X X 310, 321, 347 600 .156 .563 F10875X156 X X 321 .188 .499 F10875X188 X X 321 .250 .375 F10875X250 X X 321 15/16″ .028 .882 F10937X028 X .9375″ .035 .868 F10937X035 X 23.81 mm .049 .840 F10937X049 X .065 .808 F10937X065 X X .083 .772 F10937X083 X .095 .748 F10937X095 X .120 .698 F10937X120 X .016 .968 F11000X016 X 1″ .020 .960 F11000X020 X X X 321, 347 1.0000″ .028 .944 F11000X028 X X X X 321, 347 25.40 mm .035 .093 F11000X035 X X X X 310, 321, 347 200, 400, 600 .049 .902 F11000X049 X X X X 310, 347 200, 400, 600 .058 .884 F11000X058 X .065 .870 F11000X065 X X X X 310, 321, 347 200, 400, 600 .083 .834 F11000X083 X X X X 310, 321, 347 200, 400, 600 .095 .810 F11000X095 X X X X 317, 321, 347 400, 600 .109 .782 F11000X109 X X X X 310, 321, 347, 410 200, 400, 600 .120 .760 F11000X120 X X X X 310, 321, 347 400, 600 .125 .750 F11000X125 X X 321 600 .134 .732 F11000X134 X X 200, 400 .156 .688 F11000X156 X X 321 .188 .624 F11000X188 X X 321 .250 .500 F11000X250 X X 321 .375 .250 F11000X375 X X 1-1/8″ .035 1.055 F11125X035 X X X X 321, 347 1.1250″ .049 1.027 F11125X049 X X X X 321 28.58 mm .065 .995 F11125X065 X X X X 321 .083 .959 F11125X083 X X X X 321 .095 .094 F11125X095 X X X 321 .120 .885 F11125X120 X X X X 321 .188 .749 F11125X188 X X 321 .250 .625 F11125X250 X X 1-1/4″ .028 1.194 F11250X028 X X X 321, 347 1.2500″ .035 1.180 F11250X035 X X X X 321, 347 400, 600 31.75 mm .049 1.152 F11250X049 X X X X 321, 347 400 .065 1.120 F11250X065 X X X X 317, 321, 347 200, 400, 600 .083 1.084 F11250X083 X X X X 321 200, 400, 600 .095 1.060 F11250X095 X X X X 321 400 .188 .874 F11250X188 X X 321 .250 .750 F11250X250 X X 321 1-3/8″ .035 1.305 F11375X035 X X X 321, 347 1.3750″ .049 1.277 F11375X049 X X X X 321, 347 34.93 mm .065 1.245 F11375X065 X X X X 321 .083 1.209 F11375X083 X X X .095 1.185 F11375X095 X X X .120 1.135 F11375X120 X X X X .188 .999 F11375X188 X X 321 .250 .875 F11375X250 X X 321 1-1/2″ .028 1.444 F11500X028 X X 1.5000″ .035 1.430 F11500X035 X X X X 310, 321, 347 600 38.10 mm .049 1.402 F11500X049 X X X X 310, 321, 347 400, 600 .065 1.370 F11500X065 X X X X 310, 321, 347 200, 400, 600 .083 1.334 F11500X083 X X X X 321 200, 400, 600 .095 1.310 F11500X095 X X X X 321, 347 400, 600 .120 1.260 F11500X120 X X X X 310, 321, 347 200, 400, 600 .156 1.188 F11500X156 X X X X .188 1.124 F11500X188 X X 321 .250 1.000 F11500X250 X X 321 .313 .876 F11500X313 X X 321 .375 .750 F11500X375 X X 321 1-5/8″ .035 1.555 F11625X035 X X 1.6250″ .049 1.527 F11625X049 X X X X 321 41.28 mm .065 1.495 F11625X065 X X X X 310, 321 .083 1.459 F11625X083 X X X .095 1.435 F11625X095 X X .120 1.385 F11625X120 X X X X 321 .188 1.249 F11625X188 X X 321 .250 1.125 F11625X250 X X .375 .875 F11625X375 X X 321 1-3/4″ .035 1.680 F11750X035 X X X X 321, 347 1.7500″ .049 1.652 F11750X049 X X X X 310, 321 44.45 mm .065 1.620 F11750X065 X X X X 310, 321 400, 600 .083 1.584 F11750X083 X X X X 321 .095 1.560 F11750X095 X X X X 321 .120 1.510 F11750X120 X X X X 321 .156 1.438 F11750X156 X .188 1.374 F11750X188 X X 321 .250 1.250 F11750X250 X X 321 .375 1.000 F11750X375 X X 1-7/8″ .035 1.805 F11875X035 X X 1.8750″ .049 1.777 F11875X049 X X X X 321 47.63 mm .065 1.745 F11875X065 X X X X 321 .083 1.709 F11875X083 X X .095 1.685 F11875X095 X X X 321 .120 1.635 F11875X120 X X .188 1.499 F11875X188 X X .250 1.375 F11875X250 X X 321 2″ .028 1.944 F12000X028 X X X 321, 347 2.0000″ .035 1.930 F12000X035 X X X X 321, 347 600 50.8 mm .049 1.902 F12000X049 X X X X 310, 321, 347 600 .065 1.870 F12000X065 X X X X 310, 321, 347 200, 400, 600 .083 1.834 F12000X083 X X X X 310, 321 200, 400, 600 .095 1.810 F12000X095 X X X X 310, 321 600 .120 1.760 F12000X120 X X X X 310, 321 200, 400, 600 .156 1.688 F12000X156 X X X 321 .188 1.624 F12000X188 X X X 310, 321 .250 1.500 F12000X250 X X 310, 321, 347 .313 1.376 F12000X313 X X 321 .375 1.250 F12000X375 X X 321 .438 1.126 F12000X438 X X .500 1.000 F12000X500 X X 310, 321, 347 2-1/8″ .035 2.055 F12125X035 X X 2.1250″ .049 2.027 F12125X049 X X X X 321 53.98 mm .065 1.995 F12125X065 X X X X 321 .083 1.959 F12125X083 X X X .095 1.935 F12125X095 X X X .120 1.885 F12125X120 X X X 321 .188 1.749 F12125X188 X X .250 1.625 F12125X250 X X 321 .375 1.375 F12125X375 X X 321, 347 .500 1.125 F12125X500 X X 321 2-1/4″ .035 2.180 F12250X035 X X 2.25000″ .049 2.152 F12250X049 X X X X 321 57.15 mm .065 2.120 F12250X065 X X X X 321, 347 .083 2.084 F12250X083 X X X X 321 .095 2.060 F12250X095 X X X .120 2.010 F12250X120 X X X X 310, 321 .188 1.874 F12250X188 X X 321 .250 1.750 F12250X250 X X 321 .375 1.500 F12250X375 X X 321 .500 1.250 F12250X500 X X 321 2-3/8″ .035 2.305 F12375X035 X X 2.3750″ .049 2.277 F12375X049 X X 60.33 mm .065 2.245 F12375X065 X X X X 321 .083 2.209 F12375X083 X X X X .095 2.185 F12375X095 X .120 2.135 F12375X120 X X X .188 1.999 F12375X188 X X 321 .250 1.875 F12375X250 X X 321 .375 1.625 F12375X375 X X 321 .500 1.375 F12375X500 X X 2-1/2″ .035 2.430 F12500X035 X X X X 321, 347 2.5000″ .049 2.402 F12500X035 X X X X 321, 347 63.50 mm .065 2.370 F12500X065 X X X X 310, 321, 347 200, 400, 600 .083 2.334 F12500X083 X X X X 310, 321 200, 400 .095 2.310 F12500X095 X X X 321 .120 2.260 F12500X120 X X X X 321, 347 400, 600 .188 2.124 F12500X188 X X 321 .250 2.000 F12500X250 X X 310, 321 .375 1.750 F12500X375 X X 310, 321 .500 1.500 F12500X500 X X 310, 321, 410 2-5/8″ .049 2.527 F12625X049 X 2.6250″ .065 2.495 F12625X065 X X X X 321 66.68 mm .095 2.435 F12625X095 X X .120 2.385 F12625X120 X X X X 321, 347 .188 2.249 F12625X188 X X 321 .250 2.125 F12625X250 X X .375 1.875 F12625X375 X X 321 .500 1.625 F12625X500 X X 321 2-3/4″ .035 2.680 F12750X035 X X 2.7500″ .049 2.652 F12750X049 X X 69.85 mm .065 2.620 F12750X065 X X X X 321 .083 2.584 F12750X083 X X X X 321 .120 2.510 F12750X120 X X X X 321 .188 2.374 F12750X188 X X 321 .250 2.250 F12750X250 X X 321 .500 1.750 F12750X500 X X 321 3″ .035 2.930 F13000X035 X X X X 321, 347 3.0000″ .049 2.902 F13000X049 X X X X 321, 347 76.20 mm .065 2.870 F13000X065 X X X X 310, 321, 347 200, 400, 600 .083 2.834 F13000X083 X X X X 310, 321 200, 400, 600 .095 2.810 F13000X095 X X X X 321 .120 2.760 F13000X120 X X X X 310, 321, 347 200, 600 .156 2.688 F13000X156 X X .188 2.624 F13000X188 X X X 321 .250 2.500 F13000X250 X X 310, 321 600 .313 2.376 F13000X313 X X .375 2.250 F13000X375 X X 321 .500 2.000 F13000X500 X X 310, 321 .625 1.750 F13000X625 X X 321 .750 1.500 F13000X750 X X 321