{
 "version": "2026-10-20",
 "license": "Dimension sheets are written by Xem Studio from the cited sources and are free to use (CC BY 4.0, attribute 'Xem Studio'). Linked files belong to their publishers under the license shown; Xem Studio does not host them. 'license_verified: false' means the license shown is from memory or the publisher's page as last read and should be confirmed at the link before commercial use.",
 "slug": "slide-in-t-nuts",
 "name": "Slide-in T-nuts for 20, 30, 40 and 10-series (1 in) extrusion",
 "kind": "hardware",
 "category": "Hardware",
 "group": "Framing",
 "year": null,
 "question": "What are 2020 T-nut dimensions?",
 "tags": [
  "t-nut",
  "slide-in",
  "extrusion",
  "2020",
  "t-slot",
  "stirling",
  "long earth society"
 ],
 "aliases": [
  "2020 t nut dimensions",
  "slide in t nut 2020",
  "4040 t nut",
  "8020 t nut",
  "t nut stl"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": true,
 "free_files": 10,
 "url": "https://xemstudio.com/objects/slide-in-t-nuts/",
 "sheet_txt": "https://xemstudio.com/objects/slide-in-t-nuts/sheet.txt",
 "sheet": {
  "basis": "Drawn exact to the slot: body = cavity width × depth under the lips, tongue = slot opening × lip; threads as standard tap-drill holes",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "The body is the slot cavity's width by the depth under the lips, and the tongue on top is the slot opening by the lip thickness, running the nut's full length; none has clearance drawn in.",
   "20-series: 11 × 11 × 4.2 body, 6 × 1.8 tongue, 6 mm overall, M3 / M4 / M5. 30-series: 16.5 × 16.5 × 6, tongue 8 × 2.5, M5 / M6 / M8. 40-series: 20 × 20 × 6.5, tongue 8 × 3, M6 / M8. 10-series: 14.4 × 14.4 × 4.8, tongue 6.5 × 2.3, 1/4-20 / 10-32.",
   "The thread hole is the standard tap drill: M3 2.5, M4 3.3, M5 4.2, M6 5.0, M8 6.8, 1/4-20 5.1, 10-32 4.0.",
   "A slide-in nut enters from the end of the profile; the body edges carry a 0.8 mm chamfer."
  ],
  "table": {
   "columns": [
    "series",
    "body_mm",
    "tongue_mm",
    "overall_h_mm",
    "threads"
   ],
   "rows": [
    [
     "20",
     "11 × 11 × 4.2",
     "6 × 1.8",
     6,
     "M3, M4, M5"
    ],
    [
     "30",
     "16.5 × 16.5 × 6",
     "8 × 2.5",
     8.5,
     "M5, M6, M8"
    ],
    [
     "40",
     "20 × 20 × 6.5",
     "8 × 3",
     9.5,
     "M6, M8"
    ],
    [
     "10 (1 in)",
     "14.4 × 14.4 × 4.8",
     "6.5 × 2.3",
     7.1,
     "1/4-20, 10-32"
    ]
   ]
  }
 },
 "sheet_text": "Slide-in T-nuts for 20, 30, 40 and 10-series (1 in) extrusion — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/slide-in-t-nuts/  (CC BY 4.0)\nBasis: Drawn exact to the slot: body = cavity width × depth under the lips, tongue = slot opening × lip; threads as standard tap-drill holes\nCatalog version: 2026-10-20\n\nSizes: see table below\n- The body is the slot cavity's width by the depth under the lips, and the tongue on top is the slot opening by the lip thickness, running the nut's full length; none has clearance drawn in.\n- 20-series: 11 × 11 × 4.2 body, 6 × 1.8 tongue, 6 mm overall, M3 / M4 / M5. 30-series: 16.5 × 16.5 × 6, tongue 8 × 2.5, M5 / M6 / M8. 40-series: 20 × 20 × 6.5, tongue 8 × 3, M6 / M8. 10-series: 14.4 × 14.4 × 4.8, tongue 6.5 × 2.3, 1/4-20 / 10-32.\n- The thread hole is the standard tap drill: M3 2.5, M4 3.3, M5 4.2, M6 5.0, M8 6.8, 1/4-20 5.1, 10-32 4.0.\n- A slide-in nut enters from the end of the profile; the body edges carry a 0.8 mm chamfer.\n\nseries  body_mm  tongue_mm  overall_h_mm  threads\n20  11 × 11 × 4.2  6 × 1.8  6.0  M3, M4, M5\n30  16.5 × 16.5 × 6  8 × 2.5  8.5  M5, M6, M8\n40  20 × 20 × 6.5  8 × 3  9.5  M6, M8\n10 (1 in)  14.4 × 14.4 × 4.8  6.5 × 2.3  7.1  1/4-20, 10-32\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Wikipedia: T-slot nut — web — CC BY-SA 4.0 (text) — https://en.wikipedia.org/wiki/T-slot_nut\n- OpenBuilds: Tee nuts and brackets for V-slot — web, STEP — OpenBuilds site [verify license at link] — https://openbuildspartstore.com/\n- Long Earth Society: Engine and rig builds on extrusion frames — web, video — LES site — https://longearthsociety.com/engineering/\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 10 parts): https://xemstudio.com/files/hardware/slide-in-t-nuts/index.json\nAPI: https://xemstudio.com/api/geometry?object=slide-in-t-nuts\n",
 "sources": [
  {
   "publisher": "Wikipedia",
   "title": "T-slot nut",
   "url": "https://en.wikipedia.org/wiki/T-slot_nut",
   "formats": [
    "web"
   ],
   "license": "CC BY-SA 4.0 (text)",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "OpenBuilds",
   "title": "Tee nuts and brackets for V-slot",
   "url": "https://openbuildspartstore.com/",
   "formats": [
    "web",
    "STEP"
   ],
   "license": "OpenBuilds site",
   "license_verified": false,
   "hosted": false
  },
  {
   "publisher": "Long Earth Society",
   "title": "Engine and rig builds on extrusion frames",
   "url": "https://longearthsociety.com/engineering/",
   "formats": [
    "web",
    "video"
   ],
   "license": "LES site",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "drop-in-t-nuts",
  "t-slot-corner-brackets",
  "extrusion-tongue-gauge",
  "t-slot-extrusions",
  "2020-extrusion",
  "button-head-screws-metric"
 ],
 "fits": [
  {
   "role": "Goes in or on",
   "items": [
    {
     "slug": "t-slot-extrusions",
     "why": "body in the slot cavity, tongue in the opening (slide)"
    }
   ]
  },
  {
   "role": "Connects to",
   "items": [
    {
     "slug": "button-head-screws-metric",
     "why": "screw into the tap-drill hole"
    }
   ]
  },
  {
   "role": "Alternatives",
   "items": [
    {
     "slug": "drop-in-t-nuts",
     "why": "drop in from the face instead of the end"
    }
   ]
  }
 ],
 "dimensions": "exact (nominal, no printing tolerance)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no printing tolerance. 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.",
 "mating": [
  {
   "feature": "slide-in T-nut body",
   "exact": "cavity width × (depth − lip), e.g. 11 × 4.2 on 20-series",
   "mates": "slot cavity",
   "fit": "slide",
   "files": "tnut-slide-"
  },
  {
   "feature": "T-nut tongue",
   "exact": "slot opening × lip (6.0 × 1.8 on 20-series; 8.0 on 30/40; 6.5 on 10-series)",
   "mates": "slot opening",
   "fit": "slide",
   "files": "tnut-"
  },
  {
   "feature": "T-nut thread hole",
   "exact": "tap drill (M3 2.5 … M8 6.8, 1/4-20 5.1, 10-32 4.0)",
   "mates": "screw thread",
   "fit": "designed",
   "files": "tnut-"
  },
  {
   "feature": "bracket / gusset / plate screw holes",
   "exact": "Ø5.5 / 6.6 / 9.0 / 7.14",
   "mates": "M5 / M6 / M8 / 1/4-20 clearance",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. Typical FDM: hole +0.0 to +0.1 mm on diameter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. Typical FDM: +0.2 mm.",
  "run": "turns or slides in use: pin in a link, rod through a guide. Typical FDM: +0.3 mm.",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. Typical FDM: +0.3 mm.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What are 2020 T-nut dimensions?",
   "a": "Slide-in: 11 × 11 × 4.2 mm body with a 6.0 × 1.8 tongue, 6 mm tall overall, threaded M3, M4 or M5 as tap-drill holes."
  },
  {
   "q": "Are the printable T-nuts drawn with clearance?",
   "a": "No; body and tongue equal the slot's sizes, and the Mating features list the faces that meet the slot and their fit."
  },
  {
   "q": "What thread for an 8020 10-series T-nut?",
   "a": "1/4-20 (5.1 mm tap drill) or 10-32 (4.0 mm)."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "tnut-slide-20-m3",
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    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-20-m3.step",
   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-20-m3.stl",
   "note": "slide-in T-nut, 20-series slot: body 11 × 11 × 4.2, tongue 6 × 1.8 (exact to the slot), M3 tap-drill hole Ø2.5"
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  {
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   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-20-m4.stl",
   "note": "slide-in T-nut, 20-series slot: body 11 × 11 × 4.2, tongue 6 × 1.8 (exact to the slot), M4 tap-drill hole Ø3.3"
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  {
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   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-20-m5.stl",
   "note": "slide-in T-nut, 20-series slot: body 11 × 11 × 4.2, tongue 6 × 1.8 (exact to the slot), M5 tap-drill hole Ø4.2"
  },
  {
   "file": "tnut-slide-30-m5",
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   "note": "slide-in T-nut, 30-series slot: body 16.5 × 16.5 × 6, tongue 8 × 2.5 (exact to the slot), M5 tap-drill hole Ø4.2"
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   "file": "tnut-slide-30-m6",
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   "note": "slide-in T-nut, 30-series slot: body 16.5 × 16.5 × 6, tongue 8 × 2.5 (exact to the slot), M6 tap-drill hole Ø5"
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  {
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   "note": "slide-in T-nut, 30-series slot: body 16.5 × 16.5 × 6, tongue 8 × 2.5 (exact to the slot), M8 tap-drill hole Ø6.8"
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  {
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   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-40-m6.stl",
   "note": "slide-in T-nut, 40-series slot: body 20 × 20 × 6.5, tongue 8 × 3 (exact to the slot), M6 tap-drill hole Ø5"
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   "note": "slide-in T-nut, 40-series slot: body 20 × 20 × 6.5, tongue 8 × 3 (exact to the slot), M8 tap-drill hole Ø6.8"
  },
  {
   "file": "tnut-slide-10in-1-4-20",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-10in-1-4-20.stl",
   "note": "slide-in T-nut, 10in-series slot: body 14.4 × 14.4 × 4.8, tongue 6.5 × 2.3 (exact to the slot), 1/4-20 tap-drill hole Ø5.1"
  },
  {
   "file": "tnut-slide-10in-10-32",
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   "stl": "https://xemstudio.com/files/hardware/t-slot-brackets-and-nuts/tnut-slide-10in-10-32.stl",
   "note": "slide-in T-nut, 10in-series slot: body 14.4 × 14.4 × 4.8, tongue 6.5 × 2.3 (exact to the slot), 10-32 tap-drill hole Ø4"
  }
 ],
 "markdown": "https://xemstudio.com/objects/slide-in-t-nuts/index.md"
}