{
 "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": "luer-to-barb-adapters",
 "name": "Luer lock and Luer slip to barb adapters: tubing ID sizes 1/16 to 1/4 in (Nordson Value Plastics, Qosina), male and female",
 "kind": "standard",
 "category": "Tri-clamp & pipe",
 "group": "Pipe, tube & threads",
 "year": null,
 "question": "What tubing fits a male Luer lock to barb adapter, and what sizes do Luer barb fittings come in?",
 "tags": [
  "luer lock",
  "barb",
  "luer to barb",
  "hose barb",
  "male luer",
  "female luer",
  "tube adapter",
  "fluid fitting",
  "qosina",
  "nordson",
  "value plastics",
  "tote"
 ],
 "aliases": [
  "luer lock to barb 1/8 tubing",
  "male luer to 3/16 barb",
  "luer barb adapter sizes",
  "luer to 4mm tubing",
  "luer lock to 1/4 barb",
  "5/32 luer barb",
  "luer slip to barb tube id",
  "female luer lock barb 1/16",
  "luer adapter for silicone tube",
  "luer to barb cad",
  "luer lock barb stl"
 ],
 "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/luer-to-barb-adapters/",
 "sheet_txt": "https://xemstudio.com/objects/luer-to-barb-adapters/sheet.txt",
 "sheet": {
  "basis": "Nordson Value Plastics' male Luer-to-barb catalog page (distributor copy), Qosina's Luer-lock-to-barb sample kit page, Darwin Microfluidics' listing as a cross-check; tube ID per part, numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "The sources print the tubing inside diameter each barb is made for, and nothing else about the barb: no barb outside diameter, no length. So this page is a tube-size table, not a barb drawing. Nordson Value Plastics sorts its barbs into series (200, 300, 400, 500, as printed; the numbers are series names, not dimensions) and lists male Luer lock (integral lock ring), male Luer slip, and fittings made to fit a separate rotating or stationary lock ring. Qosina's polycarbonate kit lists a female and a male Luer lock barbed connector for each of six tube IDs. Darwin Microfluidics' male Luer lock to barb adapters (1/16, 3/32, 1/8 in ID, polypropylene or nylon) agree with the matching Nordson sizes.",
   "Tube size means the inside diameter of the soft tube that is stretched over the barb: 1/16 in (1.6 mm), 3/32 (2.4 mm), 1/8 (3.2 mm), 5/32 (4.0 mm), 3/16 (4.8 mm), 1/4 (6.4 mm). Nordson prints one oddity, .170 in (4.3 mm), for a 400-series part. Qosina prints the exact inch value too (for example 3/16 in = 0.188 in = 4.76 mm). mm values in the last column are the sources' own where printed and the inch value × 25.4 otherwise.",
   "The Luer end is the 6 % cone of luer-connectors-iso-594-80369-7. A 4 × 6 mm silicone or airline tube (4 mm ID) is closest to the 5/32 in (4.0 mm) barb; 3/16 in ID airline tubing matches the 3/16 in (4.8 mm) barb: see aquarium-airline-tubing. Which barb is right for your tube is a matter of the maker's data; this page does not rate fits.",
   "No file: barb OD, length and barb profile are not published as numbers in any source read. Qosina publishes CAD for its Luer parts for registered users and Nordson Medical publishes models on its site; linked, not copied."
  ],
  "table": {
   "columns": [
    "maker",
    "type",
    "part number(s)",
    "barb series",
    "tube ID (in)",
    "tube ID (mm)"
   ],
   "rows": [
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL210 / MTLL410 / MTLL004",
     "200 / 400 / 500",
     "1/16 in",
     "1.59 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL420 / MTLL007 / MTLL220",
     "400 / 500 / 200",
     "3/32 in",
     "2.38 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL230 / MTLL013 / MTLL430",
     "200 / 500 / 400",
     "1/8 in",
     "3.17 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL240 / MTLL025",
     "200 / 500",
     "5/32 in",
     "3.97 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL250 / MTLL450 / MTLL035",
     "200 / 400 / 500",
     "3/16 in",
     "4.76 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL445",
     "400",
     ".170 in",
     "4.3 (as printed) mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer integral lock ring",
     "MTLL360 / MTLL055",
     "300 / 500",
     "1/4 in",
     "6.35 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MTLS210 / MSL004",
     "200 / 500",
     "1/16 in",
     "1.59 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MTLS220 / MSL007",
     "200 / 500",
     "3/32 in",
     "2.38 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MTLS230 / MSL013",
     "200 / 500",
     "1/8 in",
     "3.17 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MTLS240 / MSL025",
     "200 / 500",
     "5/32 in",
     "3.97 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MSL035",
     "500",
     "3/16 in",
     "4.76 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer slip",
     "MSL055",
     "500",
     "1/4 in",
     "6.35 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer, rotating lock ring compatible",
     "MLRL004 / 007 / 013 / 025 / 035 / 055",
     "500",
     "1/16, 3/32, 1/8, 5/32, 3/16, 1/4 in",
     "1.59, 2.38, 3.17, 3.97, 4.76, 6.35 mm"
    ],
    [
     "Nordson Value Plastics",
     "Male Luer, stationary lock ring compatible",
     "MLSL004 / 007 / 013 / 025 / 035 / 055",
     "500",
     "1/16, 3/32, 1/8, 5/32, 3/16, 1/4 in",
     "1.59, 2.38, 3.17, 3.97, 4.76, 6.35 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11544 / 11545",
     "—",
     "1/16 in (0.063 in)",
     "1.59 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11546 / 11547",
     "—",
     "3/32 in (0.094 in)",
     "2.38 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11548 / 11549",
     "—",
     "1/8 in (0.125 in)",
     "3.18 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11550 / 11551",
     "—",
     "5/32 in (0.156 in)",
     "3.97 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11552 / 11553",
     "—",
     "3/16 in (0.188 in)",
     "4.76 mm"
    ],
    [
     "Qosina (sample kit Q3000-PC)",
     "Female / male Luer lock, barbed (PC)",
     "11554 / 11555",
     "—",
     "1/4 in (0.25 in)",
     "6.35 mm"
    ]
   ]
  }
 },
 "sheet_text": "Luer lock and Luer slip to barb adapters: tubing ID sizes 1/16 to 1/4 in (Nordson Value Plastics, Qosina), male and female — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/luer-to-barb-adapters/  (sheet CC BY 4.0)\nBasis: Nordson Value Plastics' male Luer-to-barb catalog page (distributor copy), Qosina's Luer-lock-to-barb sample kit page, Darwin Microfluidics' listing as a cross-check; tube ID per part, numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- The sources print the tubing inside diameter each barb is made for, and nothing else about the barb: no barb outside diameter, no length. So this page is a tube-size table, not a barb drawing. Nordson Value Plastics sorts its barbs into series (200, 300, 400, 500, as printed; the numbers are series names, not dimensions) and lists male Luer lock (integral lock ring), male Luer slip, and fittings made to fit a separate rotating or stationary lock ring. Qosina's polycarbonate kit lists a female and a male Luer lock barbed connector for each of six tube IDs. Darwin Microfluidics' male Luer lock to barb adapters (1/16, 3/32, 1/8 in ID, polypropylene or nylon) agree with the matching Nordson sizes.\n- Tube size means the inside diameter of the soft tube that is stretched over the barb: 1/16 in (1.6 mm), 3/32 (2.4 mm), 1/8 (3.2 mm), 5/32 (4.0 mm), 3/16 (4.8 mm), 1/4 (6.4 mm). Nordson prints one oddity, .170 in (4.3 mm), for a 400-series part. Qosina prints the exact inch value too (for example 3/16 in = 0.188 in = 4.76 mm). mm values in the last column are the sources' own where printed and the inch value × 25.4 otherwise.\n- The Luer end is the 6 % cone of luer-connectors-iso-594-80369-7. A 4 × 6 mm silicone or airline tube (4 mm ID) is closest to the 5/32 in (4.0 mm) barb; 3/16 in ID airline tubing matches the 3/16 in (4.8 mm) barb: see aquarium-airline-tubing. Which barb is right for your tube is a matter of the maker's data; this page does not rate fits.\n- No file: barb OD, length and barb profile are not published as numbers in any source read. Qosina publishes CAD for its Luer parts for registered users and Nordson Medical publishes models on its site; linked, not copied.\n\nmaker  type  part number(s)  barb series  tube ID (in)  tube ID (mm)\nNordson Value Plastics  Male Luer integral lock ring  MTLL210 / MTLL410 / MTLL004  200 / 400 / 500  1/16 in  1.59 mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL420 / MTLL007 / MTLL220  400 / 500 / 200  3/32 in  2.38 mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL230 / MTLL013 / MTLL430  200 / 500 / 400  1/8 in  3.17 mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL240 / MTLL025  200 / 500  5/32 in  3.97 mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL250 / MTLL450 / MTLL035  200 / 400 / 500  3/16 in  4.76 mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL445  400  .170 in  4.3 (as printed) mm\nNordson Value Plastics  Male Luer integral lock ring  MTLL360 / MTLL055  300 / 500  1/4 in  6.35 mm\nNordson Value Plastics  Male Luer slip  MTLS210 / MSL004  200 / 500  1/16 in  1.59 mm\nNordson Value Plastics  Male Luer slip  MTLS220 / MSL007  200 / 500  3/32 in  2.38 mm\nNordson Value Plastics  Male Luer slip  MTLS230 / MSL013  200 / 500  1/8 in  3.17 mm\nNordson Value Plastics  Male Luer slip  MTLS240 / MSL025  200 / 500  5/32 in  3.97 mm\nNordson Value Plastics  Male Luer slip  MSL035  500  3/16 in  4.76 mm\nNordson Value Plastics  Male Luer slip  MSL055  500  1/4 in  6.35 mm\nNordson Value Plastics  Male Luer, rotating lock ring compatible  MLRL004 / 007 / 013 / 025 / 035 / 055  500  1/16, 3/32, 1/8, 5/32, 3/16, 1/4 in  1.59, 2.38, 3.17, 3.97, 4.76, 6.35 mm\nNordson Value Plastics  Male Luer, stationary lock ring compatible  MLSL004 / 007 / 013 / 025 / 035 / 055  500  1/16, 3/32, 1/8, 5/32, 3/16, 1/4 in  1.59, 2.38, 3.17, 3.97, 4.76, 6.35 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11544 / 11545  —  1/16 in (0.063 in)  1.59 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11546 / 11547  —  3/32 in (0.094 in)  2.38 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11548 / 11549  —  1/8 in (0.125 in)  3.18 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11550 / 11551  —  5/32 in (0.156 in)  3.97 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11552 / 11553  —  3/16 in (0.188 in)  4.76 mm\nQosina (sample kit Q3000-PC)  Female / male Luer lock, barbed (PC)  11554 / 11555  —  1/4 in (0.25 in)  6.35 mm\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Nordson Value Plastics (distributor copy of catalog page vp022): Male Luer to barb fittings: part numbers, barb series, tube ID (integral lock ring, slip, rotating / stationary lock ring compatible) — web — Maker catalog page; numbers only — https://pdf2.chromtech.net.au/vp022_Luers-Male_6-11.pdf\n- Qosina: Polycarbonate Luer locks to barb connectors sample kit Q3000-PC: male and female Luer lock, barbed, parts 11544-11555 and the tubing ID each fits — web — Maker page; numbers only. CAD behind a free log-in, not copied — https://www.qosina.com/pc-luer-lock-to-barb-connector-sample-kit-q3000-pc\n- Darwin Microfluidics: Male luer lock to barb adapters pack of 10: tubing ID 1/16, 3/32, 1/8 in (cross-check) — web — Distributor page; numbers only — https://darwin-microfluidics.com/products/male-luer-lock-to-barb-adapters-pack-of-10\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=luer-to-barb-adapters\n",
 "sources": [
  {
   "publisher": "Nordson Value Plastics (distributor copy of catalog page vp022)",
   "title": "Male Luer to barb fittings: part numbers, barb series, tube ID (integral lock ring, slip, rotating / stationary lock ring compatible)",
   "url": "https://pdf2.chromtech.net.au/vp022_Luers-Male_6-11.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker catalog page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Qosina",
   "title": "Polycarbonate Luer locks to barb connectors sample kit Q3000-PC: male and female Luer lock, barbed, parts 11544-11555 and the tubing ID each fits",
   "url": "https://www.qosina.com/pc-luer-lock-to-barb-connector-sample-kit-q3000-pc",
   "formats": [
    "web"
   ],
   "license": "Maker page; numbers only. CAD behind a free log-in, not copied",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Darwin Microfluidics",
   "title": "Male luer lock to barb adapters pack of 10: tubing ID 1/16, 3/32, 1/8 in (cross-check)",
   "url": "https://darwin-microfluidics.com/products/male-luer-lock-to-barb-adapters-pack-of-10",
   "formats": [
    "web"
   ],
   "license": "Distributor page; 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": [
  "luer-connectors-iso-594-80369-7",
  "silicone-tube",
  "aquarium-airline-tubing",
  "tri-clamp-hose-barb-adapters",
  "plastic-syringes",
  "drip-irrigation-tubing-sizes"
 ],
 "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": "Which Luer barb fits 4 mm ID tubing?",
   "a": "The nearest sizes printed are 5/32 in (4.0 mm ID, Nordson MTLL240, MTLS240, MSL025; Qosina 11550/11551) and 3/16 in (4.8 mm ID). The sources do not say how much a barb oversizes the tube."
  },
  {
   "q": "What tube sizes do male Luer lock barbs come in?",
   "a": "1/16, 3/32, 1/8, 5/32, 3/16 and 1/4 in ID in the Nordson and Qosina listings read here, plus a .170 in (4.3 mm) part."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/luer-to-barb-adapters/index.md"
}