{
 "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": "captive-nut-slot-m8",
 "name": "M8 captive nut slot (side-loaded)",
 "kind": "hardware",
 "category": "Joinery",
 "group": "3D-print connectors",
 "year": null,
 "question": "How do you make a side-loaded M8 nut slot?",
 "tags": [
  "joinery",
  "woodworking joint",
  "3d printable",
  "connect 3d prints",
  "no glue",
  "stl",
  "step",
  "3d-print connectors"
 ],
 "aliases": [
  "M8 captive nut",
  "M8 captive nut slot",
  "M8 nut slot 3d print",
  "side loaded nut slot",
  "captive nut slot",
  "ranura para tuerca M8",
  "Mutternschlitz M8"
 ],
 "overall_mm": {
  "length": 21,
  "width": 31.5,
  "height": 16.8
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 3,
 "url": "https://xemstudio.com/objects/captive-nut-slot-m8/",
 "sheet_txt": "https://xemstudio.com/objects/captive-nut-slot-m8/sheet.txt",
 "sheet": {
  "basis": "Xem Studio design — geometry computed in the generator from traditional proportions",
  "overall_mm": {
   "length": 21,
   "width": 31.5,
   "height": 16.8
  },
  "notes": [
   "Woodworking joint drawn for 3D printing: the parts lock together by shape, so a print can be joined without glue or screws. Drawn at true size with the parts line to line (zero gap) in their assembled position — add your printer's fit allowance to the mating faces (your AI or slicer can do this).",
   "A slot that takes an M8 nut from the side, for a nut in the middle of a part (e.g. under a clamp screw).",
   "Drawn at the nut's true size: add your fit allowance to the slot width and height. The slot ceiling is a short bridge."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "stock",
     "21 × 31.5 × 16.8 mm test block"
    ],
    [
     "parts",
     "block, nut"
    ],
    [
     "slot",
     "13 mm wide (nut across flats), 6.8 mm tall (nut height), open to the side"
    ],
    [
     "screw hole",
     "Ø8 mm"
    ],
    [
     "assembles",
     "slide the nut in from the side, screw through"
    ],
    [
     "holds",
     "the nut mid-part, where a top pocket can't reach"
    ]
   ]
  }
 },
 "sheet_text": "M8 captive nut slot (side-loaded) — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/captive-nut-slot-m8/  (sheet CC BY 4.0; files Xem Studio Design License, https://xemstudio.com/license/)\nBasis: Xem Studio design — geometry computed in the generator from traditional proportions\nCatalog version: 2026-10-20\n\nOverall (mm): length 21.0, width 31.5, height 16.8\n- Woodworking joint drawn for 3D printing: the parts lock together by shape, so a print can be joined without glue or screws. Drawn at true size with the parts line to line (zero gap) in their assembled position — add your printer's fit allowance to the mating faces (your AI or slicer can do this).\n- A slot that takes an M8 nut from the side, for a nut in the middle of a part (e.g. under a clamp screw).\n- Drawn at the nut's true size: add your fit allowance to the slot width and height. The slot ceiling is a short bridge.\n\ndimension  value\nstock  21 × 31.5 × 16.8 mm test block\nparts  block, nut\nslot  13 mm wide (nut across flats), 6.8 mm tall (nut height), open to the side\nscrew hole  Ø8 mm\nassembles  slide the nut in from the side, screw through\nholds  the nut mid-part, where a top pocket can't reach\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Xem Studio: Joinery design (geometry computed in the generator from traditional proportions) — web — Xem Studio design — https://xemstudio.com/\n\nFree files (Xem Studio Design License, Xem Studio; STEP + STL, 3 parts): https://xemstudio.com/files/hardware/captive-nut-slot-m8/index.json\nAPI: https://xemstudio.com/api/geometry?object=captive-nut-slot-m8\n",
 "sources": [
  {
   "publisher": "Xem Studio",
   "title": "Joinery design (geometry computed in the generator from traditional proportions)",
   "url": "https://xemstudio.com/",
   "formats": [
    "web"
   ],
   "license": "Xem Studio design",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "nut-trap-m8",
  "hex-nuts-metric"
 ],
 "fits": [],
 "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": [],
 "faq": [
  {
   "q": "How wide is an M8 nut slot?",
   "a": "13 mm (across flats) by 6.8 mm tall at true size, plus your fit allowance."
  }
 ],
 "files_license": {
  "name": "Xem Studio Design License",
  "holder": "Xem Studio",
  "url": "https://xemstudio.com/license/",
  "note": "Xem Studio's own design: free to use, print, modify and sell things made from it; not to be republished or redistributed as files."
 },
 "offers": [
  {
   "file": "captive-nut-slot-m8-block",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-block.step",
   "stl": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-block.stl",
   "note": "Block with a 13 mm wide slot from the side, 6.8 mm tall, and a Ø8 screw hole"
  },
  {
   "file": "captive-nut-slot-m8-nut",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-nut.step",
   "stl": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-nut.stl",
   "note": "M8 hex nut, in place"
  },
  {
   "file": "captive-nut-slot-m8-assembled",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "Xem Studio Design License",
   "step": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-assembled.step",
   "stl": "https://xemstudio.com/files/hardware/captive-nut-slot-m8/captive-nut-slot-m8-assembled.stl",
   "note": "All parts in their assembled position (each part its own solid)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/captive-nut-slot-m8/index.md"
}