{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "nylon-tubing-inch-metric-sizes",
 "name": "Nylon tubing sizes: inch (1/8 to 5/8 in OD) and metric (3 to 12 mm) OD × ID × wall, standard, D.O.T. and high-pressure nylon 11",
 "kind": "standard",
 "category": "Tri-clamp & pipe",
 "group": "Pipe, tube & threads",
 "year": null,
 "question": "What are the OD, ID and wall of 1/4 inch and 6 mm nylon tubing, and which push-in fittings does it fit?",
 "tags": [
  "nylon tubing",
  "nylon tube",
  "polyamide tube",
  "pa12 tube",
  "pa11 tube",
  "air brake tubing",
  "dot tubing",
  "push in tubing",
  "pneumatic tube",
  "freelin-wade",
  "tote"
 ],
 "aliases": [
  "1/4 nylon tubing id",
  "1/4 od nylon tubing wall",
  "6mm nylon tubing id",
  "nylon tubing 8mm od 6mm id",
  "3/8 nylon tubing id",
  "nylon tubing 5/32 od",
  "dot nylon tubing wall",
  "nylon 11 tubing 1/4 id .150",
  "nylon tubing sizes chart",
  "12mm nylon tube id 10",
  "1/2 od nylon tubing id",
  "5/16 nylon tube id .232",
  "nylon tubing 1/8 od id .093",
  "nylon 12 tubing dimensions"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/nylon-tubing-inch-metric-sizes/",
 "sheet_txt": "https://xemstudio.com/objects/nylon-tubing-inch-metric-sizes/sheet.txt",
 "sheet": {
  "basis": "Freelin-Wade nylon tubing datasheet (standard nylon inch and metric, D.O.T. nylon 11, high-pressure nylon 11); one maker; numbers only; pressure ratings left out on purpose",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Nylon (polyamide) tubing is sold by OD, with the ID set by the wall: 1/4 in OD comes with three walls, 0.035 in (ID 0.180), 0.040 in (ID 0.170) and 0.062 in (ID 0.125) in the standard line, so '1/4 in nylon tubing' is not one size and the fitting must match the OD. Freelin-Wade's inch sizes are 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 1/2 and 5/8 in OD; the metric sizes are 3, 4, 5, 6, 8, 10 and 12 mm OD with 1 mm walls from 5 mm up (6 × 4 mm, 8 × 6 mm, 10 × 8 mm, 12 × 10 mm).",
   "Each maker has its own families: 'standard nylon', 'D.O.T. nylon 11' (air-brake tubing, OD and wall only, no ID printed; the ID shown is OD − 2 × wall) and 'high-pressure nylon 11' (thicker walls, smaller IDs). Millimetres are inch × 25.4; metric inches are mm ÷ 25.4. Each ID and wall was checked against OD − 2 × wall: all agree to within 0.004 in for the inch rows and 0.1 mm for the metric rows.",
   "Bend radius is shown (inches, as printed) for the standard inch line only; the metric bend radii in the datasheet are printed without units and are not copied. Working pressures at 75 °F and 150 °F, burst pressures and part numbers are left out. One more table in the datasheet (six sizes, 1/8 to 1/2 in, with a lighter pressure rating) has no heading in the text read and is not used; the datasheet also names a 'super soft' nylon 11 with no size table.",
   "Push-to-connect fittings take tube by OD: push-to-connect-fitting-sizes. Silicone and PU tube: silicone-tube-and-fittings; PTFE: ptfe-fep-pfa-tubing-fractional-sizes; vinyl: tygon-vinyl-tubing-e-3603-sizes; polyethylene: polyethylene-tubing-lldpe-sizes. No files: flexible tubing is not drawn as a fixed shape."
  ],
  "table": {
   "columns": [
    "family",
    "OD as listed",
    "OD, in",
    "OD, mm",
    "ID, in",
    "ID, mm",
    "wall, in",
    "wall, mm",
    "bend radius, in (as printed)"
   ],
   "rows": [
    [
     "Standard nylon (inch)",
     "1/8",
     "0.125",
     "3.18",
     "0.079",
     "2.01",
     "0.023",
     "0.58",
     "3/8"
    ],
    [
     "Standard nylon (inch)",
     "1/8",
     "0.125",
     "3.18",
     "0.093",
     "2.36",
     "0.016",
     "0.41",
     "1/2"
    ],
    [
     "Standard nylon (inch)",
     "5/32",
     "0.1562",
     "3.97",
     "0.106",
     "2.69",
     "0.025",
     "0.64",
     "1/2"
    ],
    [
     "Standard nylon (inch)",
     "3/16",
     "0.1875",
     "4.76",
     "0.138",
     "3.51",
     "0.025",
     "0.64",
     "5/8"
    ],
    [
     "Standard nylon (inch)",
     "1/4",
     "0.25",
     "6.35",
     "0.125",
     "3.18",
     "0.062",
     "1.57",
     "3/8"
    ],
    [
     "Standard nylon (inch)",
     "1/4",
     "0.25",
     "6.35",
     "0.170",
     "4.32",
     "0.040",
     "1.02",
     "3/4"
    ],
    [
     "Standard nylon (inch)",
     "1/4",
     "0.25",
     "6.35",
     "0.180",
     "4.57",
     "0.035",
     "0.89",
     "1"
    ],
    [
     "Standard nylon (inch)",
     "5/16",
     "0.3125",
     "7.94",
     "0.232",
     "5.89",
     "0.040",
     "1.02",
     "1-1/2"
    ],
    [
     "Standard nylon (inch)",
     "3/8",
     "0.375",
     "9.53",
     "0.275",
     "6.99",
     "0.050",
     "1.27",
     "1-1/2"
    ],
    [
     "Standard nylon (inch)",
     "1/2",
     "0.5",
     "12.70",
     "0.375",
     "9.53",
     "0.062",
     "1.57",
     "2-1/4"
    ],
    [
     "Standard nylon (inch)",
     "5/8",
     "0.625",
     "15.88",
     "0.500",
     "12.70",
     "0.062",
     "1.57",
     "3-1/4"
    ],
    [
     "High-pressure nylon 11 (inch)",
     "1/8",
     "0.125",
     "3.18",
     "0.073",
     "1.85",
     "0.026",
     "0.66",
     "—"
    ],
    [
     "High-pressure nylon 11 (inch)",
     "3/16",
     "0.1875",
     "4.76",
     "0.109",
     "2.77",
     "0.039",
     "0.99",
     "—"
    ],
    [
     "High-pressure nylon 11 (inch)",
     "1/4",
     "0.25",
     "6.35",
     "0.150",
     "3.81",
     "0.050",
     "1.27",
     "—"
    ],
    [
     "High-pressure nylon 11 (inch)",
     "3/8",
     "0.375",
     "9.53",
     "0.225",
     "5.72",
     "0.075",
     "1.91",
     "—"
    ],
    [
     "High-pressure nylon 11 (inch)",
     "1/2",
     "0.5",
     "12.70",
     "0.350",
     "8.89",
     "0.075",
     "1.91",
     "—"
    ],
    [
     "D.O.T. nylon 11 (inch; no ID printed)",
     "1/8",
     "0.125",
     "3.18",
     "0.079 (derived)",
     "2.01",
     "0.023",
     "0.58",
     "—"
    ],
    [
     "D.O.T. nylon 11 (inch; no ID printed)",
     "5/32",
     "0.1562",
     "3.97",
     "0.092 (derived)",
     "2.34",
     "0.032",
     "0.81",
     "—"
    ],
    [
     "D.O.T. nylon 11 (inch; no ID printed)",
     "3/16",
     "0.1875",
     "4.76",
     "0.116 (derived)",
     "2.93",
     "0.036",
     "0.91",
     "—"
    ],
    [
     "D.O.T. nylon 11 (inch; no ID printed)",
     "1/4",
     "0.25",
     "6.35",
     "0.170 (derived)",
     "4.32",
     "0.040",
     "1.02",
     "—"
    ],
    [
     "D.O.T. nylon 11 (inch; no ID printed)",
     "5/16",
     "0.3125",
     "7.94",
     "0.232 (derived)",
     "5.91",
     "0.040",
     "1.02",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "3 mm",
     "0.1181",
     "3",
     "0.071",
     "1.8",
     "0.024",
     "0.6",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "4 mm",
     "0.1575",
     "4",
     "0.106",
     "2.7",
     "0.026",
     "0.65",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "5 mm",
     "0.1969",
     "5",
     "0.118",
     "3",
     "0.039",
     "1",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "6 mm",
     "0.2362",
     "6",
     "0.157",
     "4",
     "0.039",
     "1",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "8 mm",
     "0.315",
     "8",
     "0.236",
     "6",
     "0.039",
     "1",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "10 mm",
     "0.3937",
     "10",
     "0.315",
     "8",
     "0.039",
     "1",
     "—"
    ],
    [
     "Standard nylon (metric)",
     "12 mm",
     "0.4724",
     "12",
     "0.394",
     "10",
     "0.039",
     "1",
     "—"
    ],
    [
     "High-pressure nylon 11 (metric)",
     "5 mm",
     "0.1969",
     "5",
     "0.118",
     "3",
     "0.039",
     "1",
     "—"
    ],
    [
     "High-pressure nylon 11 (metric)",
     "6 mm",
     "0.2362",
     "6",
     "0.157",
     "4",
     "0.039",
     "1",
     "—"
    ],
    [
     "High-pressure nylon 11 (metric)",
     "8 mm",
     "0.315",
     "8",
     "0.236",
     "6",
     "0.039",
     "1",
     "—"
    ],
    [
     "High-pressure nylon 11 (metric)",
     "10 mm",
     "0.3937",
     "10",
     "0.315",
     "8",
     "0.039",
     "1",
     "—"
    ],
    [
     "High-pressure nylon 11 (metric)",
     "12 mm",
     "0.4724",
     "12",
     "0.394",
     "10",
     "0.039",
     "1",
     "—"
    ]
   ]
  }
 },
 "sheet_text": "Nylon tubing sizes: inch (1/8 to 5/8 in OD) and metric (3 to 12 mm) OD × ID × wall, standard, D.O.T. and high-pressure nylon 11 — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/nylon-tubing-inch-metric-sizes/  (sheet CC BY 4.0)\nBasis: Freelin-Wade nylon tubing datasheet (standard nylon inch and metric, D.O.T. nylon 11, high-pressure nylon 11); one maker; numbers only; pressure ratings left out on purpose\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Nylon (polyamide) tubing is sold by OD, with the ID set by the wall: 1/4 in OD comes with three walls, 0.035 in (ID 0.180), 0.040 in (ID 0.170) and 0.062 in (ID 0.125) in the standard line, so '1/4 in nylon tubing' is not one size and the fitting must match the OD. Freelin-Wade's inch sizes are 1/8, 5/32, 3/16, 1/4, 5/16, 3/8, 1/2 and 5/8 in OD; the metric sizes are 3, 4, 5, 6, 8, 10 and 12 mm OD with 1 mm walls from 5 mm up (6 × 4 mm, 8 × 6 mm, 10 × 8 mm, 12 × 10 mm).\n- Each maker has its own families: 'standard nylon', 'D.O.T. nylon 11' (air-brake tubing, OD and wall only, no ID printed; the ID shown is OD − 2 × wall) and 'high-pressure nylon 11' (thicker walls, smaller IDs). Millimetres are inch × 25.4; metric inches are mm ÷ 25.4. Each ID and wall was checked against OD − 2 × wall: all agree to within 0.004 in for the inch rows and 0.1 mm for the metric rows.\n- Bend radius is shown (inches, as printed) for the standard inch line only; the metric bend radii in the datasheet are printed without units and are not copied. Working pressures at 75 °F and 150 °F, burst pressures and part numbers are left out. One more table in the datasheet (six sizes, 1/8 to 1/2 in, with a lighter pressure rating) has no heading in the text read and is not used; the datasheet also names a 'super soft' nylon 11 with no size table.\n- Push-to-connect fittings take tube by OD: push-to-connect-fitting-sizes. Silicone and PU tube: silicone-tube-and-fittings; PTFE: ptfe-fep-pfa-tubing-fractional-sizes; vinyl: tygon-vinyl-tubing-e-3603-sizes; polyethylene: polyethylene-tubing-lldpe-sizes. No files: flexible tubing is not drawn as a fixed shape.\n\nfamily  OD as listed  OD, in  OD, mm  ID, in  ID, mm  wall, in  wall, mm  bend radius, in (as printed)\nStandard nylon (inch)  1/8  0.125  3.18  0.079  2.01  0.023  0.58  3/8\nStandard nylon (inch)  1/8  0.125  3.18  0.093  2.36  0.016  0.41  1/2\nStandard nylon (inch)  5/32  0.1562  3.97  0.106  2.69  0.025  0.64  1/2\nStandard nylon (inch)  3/16  0.1875  4.76  0.138  3.51  0.025  0.64  5/8\nStandard nylon (inch)  1/4  0.25  6.35  0.125  3.18  0.062  1.57  3/8\nStandard nylon (inch)  1/4  0.25  6.35  0.170  4.32  0.040  1.02  3/4\nStandard nylon (inch)  1/4  0.25  6.35  0.180  4.57  0.035  0.89  1\nStandard nylon (inch)  5/16  0.3125  7.94  0.232  5.89  0.040  1.02  1-1/2\nStandard nylon (inch)  3/8  0.375  9.53  0.275  6.99  0.050  1.27  1-1/2\nStandard nylon (inch)  1/2  0.5  12.70  0.375  9.53  0.062  1.57  2-1/4\nStandard nylon (inch)  5/8  0.625  15.88  0.500  12.70  0.062  1.57  3-1/4\nHigh-pressure nylon 11 (inch)  1/8  0.125  3.18  0.073  1.85  0.026  0.66  —\nHigh-pressure nylon 11 (inch)  3/16  0.1875  4.76  0.109  2.77  0.039  0.99  —\nHigh-pressure nylon 11 (inch)  1/4  0.25  6.35  0.150  3.81  0.050  1.27  —\nHigh-pressure nylon 11 (inch)  3/8  0.375  9.53  0.225  5.72  0.075  1.91  —\nHigh-pressure nylon 11 (inch)  1/2  0.5  12.70  0.350  8.89  0.075  1.91  —\nD.O.T. nylon 11 (inch; no ID printed)  1/8  0.125  3.18  0.079 (derived)  2.01  0.023  0.58  —\nD.O.T. nylon 11 (inch; no ID printed)  5/32  0.1562  3.97  0.092 (derived)  2.34  0.032  0.81  —\nD.O.T. nylon 11 (inch; no ID printed)  3/16  0.1875  4.76  0.116 (derived)  2.93  0.036  0.91  —\nD.O.T. nylon 11 (inch; no ID printed)  1/4  0.25  6.35  0.170 (derived)  4.32  0.040  1.02  —\nD.O.T. nylon 11 (inch; no ID printed)  5/16  0.3125  7.94  0.232 (derived)  5.91  0.040  1.02  —\nStandard nylon (metric)  3 mm  0.1181  3  0.071  1.8  0.024  0.6  —\nStandard nylon (metric)  4 mm  0.1575  4  0.106  2.7  0.026  0.65  —\nStandard nylon (metric)  5 mm  0.1969  5  0.118  3  0.039  1  —\nStandard nylon (metric)  6 mm  0.2362  6  0.157  4  0.039  1  —\nStandard nylon (metric)  8 mm  0.315  8  0.236  6  0.039  1  —\nStandard nylon (metric)  10 mm  0.3937  10  0.315  8  0.039  1  —\nStandard nylon (metric)  12 mm  0.4724  12  0.394  10  0.039  1  —\nHigh-pressure nylon 11 (metric)  5 mm  0.1969  5  0.118  3  0.039  1  —\nHigh-pressure nylon 11 (metric)  6 mm  0.2362  6  0.157  4  0.039  1  —\nHigh-pressure nylon 11 (metric)  8 mm  0.315  8  0.236  6  0.039  1  —\nHigh-pressure nylon 11 (metric)  10 mm  0.3937  10  0.315  8  0.039  1  —\nHigh-pressure nylon 11 (metric)  12 mm  0.4724  12  0.394  10  0.039  1  —\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Freelin-Wade: Nylon tubing: standard nylon (inch and metric), D.O.T. nylon 11, high-pressure nylon 11: OD, ID, wall, bend radius — web — Maker datasheet; numbers only — https://www.freelin-wade.com/documents/Nylon.pdf\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=nylon-tubing-inch-metric-sizes\n",
 "sources": [
  {
   "publisher": "Freelin-Wade",
   "title": "Nylon tubing: standard nylon (inch and metric), D.O.T. nylon 11, high-pressure nylon 11: OD, ID, wall, bend radius",
   "url": "https://www.freelin-wade.com/documents/Nylon.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker datasheet; numbers only",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "push-to-connect-fitting-sizes",
  "silicone-tube",
  "ptfe-fep-pfa-tubing-fractional-sizes",
  "tygon-vinyl-tubing-e-3603-sizes",
  "polyethylene-tubing-lldpe-sizes",
  "aquarium-airline-tubing",
  "drip-irrigation-tubing-sizes",
  "luer-to-barb-adapters",
  "an-jic-37-degree-flare-fittings"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [],
 "faq": [
  {
   "q": "What is the ID of 1/4 inch nylon tubing?",
   "a": "0.170 in (4.32 mm) with a 0.040 in wall in the standard line; 0.180 in (0.035 in wall) and 0.125 in (0.062 in wall) are also made. High-pressure nylon 11 is 0.150 in ID (0.050 wall)."
  },
  {
   "q": "What is 6 mm nylon tubing?",
   "a": "6 mm OD × 4 mm ID (1 mm wall) in both the standard and high-pressure metric lines."
  },
  {
   "q": "What is D.O.T. nylon tubing?",
   "a": "A nylon 11 line with an OD and wall only: 1/4 in is 0.040 in wall (ID derived 0.170 in); 5/32 in is 0.032 in wall."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/nylon-tubing-inch-metric-sizes/index.md"
}