{
 "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": "rc-wheel-hex-12mm",
 "name": "12 mm RC wheel hex",
 "kind": "standard",
 "category": "RC cars",
 "group": "Wheel hexes",
 "year": null,
 "question": "What size is a 12 mm RC wheel hex and which cars use it?",
 "tags": [
  "rc car",
  "rc truck",
  "radio control",
  "hobby rc",
  "wheel hexes"
 ],
 "aliases": [
  "12mm wheel hex",
  "12mm hex rc",
  "12 mm hex adapter",
  "12mm hex wheels",
  "which rc cars use 12mm hex",
  "12mm hex size",
  "hexágono 12mm rc",
  "12mm sechskant rc",
  "hex 12mm rueda rc"
 ],
 "overall_mm": {
  "length": 12,
  "width": 12,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/rc-wheel-hex-12mm/",
 "sheet_txt": "https://xemstudio.com/objects/rc-wheel-hex-12mm/sheet.txt",
 "sheet": {
  "basis": "Manufacturer specifications (Axial (Horizon Hobby), RC Car Action (Team Associated release))",
  "overall_mm": {
   "length": 12,
   "width": 12,
   "height": null
  },
  "notes": [
   "A 12 mm wheel hex is the hexagonal drive between axle and wheel; 12 mm is the across-flats size. The file is a 12 mm across-flats hexagon profile.",
   "Hex thickness, drive-pin size and bore are not published as a standard and are not modelled.",
   "True size, no printing tolerance added. Only published numbers are used; anything not published is said so."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "Across flats",
     "12 mm"
    ],
    [
     "Used on (published)",
     "Traxxas TRX-4 and TRX-6, Axial SCX10 III and UTB18 Capra, Team Associated Rival MT10"
    ]
   ]
  }
 },
 "sheet_text": "12 mm RC wheel hex — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/rc-wheel-hex-12mm/  (sheet CC BY 4.0)\nBasis: Manufacturer specifications (Axial (Horizon Hobby), RC Car Action (Team Associated release))\nCatalog version: 2026-10-20\n\nOverall (mm): length 12, width 12\n- A 12 mm wheel hex is the hexagonal drive between axle and wheel; 12 mm is the across-flats size. The file is a 12 mm across-flats hexagon profile.\n- Hex thickness, drive-pin size and bore are not published as a standard and are not modelled.\n- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.\n\ndimension  value\nAcross flats  12 mm\nUsed on (published)  Traxxas TRX-4 and TRX-6, Axial SCX10 III and UTB18 Capra, Team Associated Rival MT10\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Axial (Horizon Hobby): SCX10 III Jeep JLU AXI03003 — web — Publisher's page; dimensions are facts — https://www.axialadventure.com/product/axial-1-10-scx10-iii-jeep-jlu-wrangler-4x4-rock-crawler-with-portals-rtr/AXI03003.html\n- Axial (Horizon Hobby): UTB18 Capra AXI01002V2 — web — Publisher's page; dimensions are facts — https://www.axialadventure.com/product/axial-1-18-utb18-capra-4wd-unlimited-trail-buggy-rtr/AXI01002V2.html\n- RC Car Action (Team Associated release): Rival MT10 Brushless RTR V2 — web — Publisher's page; dimensions are facts — https://www.rccaraction.com/?p=361155\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/rc-wheel-hex-12mm/index.json\nAPI: https://xemstudio.com/api/geometry?object=rc-wheel-hex-12mm\n",
 "sources": [
  {
   "publisher": "Axial (Horizon Hobby)",
   "title": "SCX10 III Jeep JLU AXI03003",
   "url": "https://www.axialadventure.com/product/axial-1-10-scx10-iii-jeep-jlu-wrangler-4x4-rock-crawler-with-portals-rtr/AXI03003.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Axial (Horizon Hobby)",
   "title": "UTB18 Capra AXI01002V2",
   "url": "https://www.axialadventure.com/product/axial-1-18-utb18-capra-4wd-unlimited-trail-buggy-rtr/AXI01002V2.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "RC Car Action (Team Associated release)",
   "title": "Rival MT10 Brushless RTR V2",
   "url": "https://www.rccaraction.com/?p=361155",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "free-files",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "rc-wheel-hex-7mm",
  "rc-wheel-hex-14mm",
  "rc-wheel-hex-17mm",
  "rc-wheel-hex-24mm"
 ],
 "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": "Which RC cars use 12 mm hexes?",
   "a": "Traxxas TRX-4 and TRX-6, Axial SCX10 III and UTB18 Capra, Team Associated Rival MT10."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "rc-wheel-hex-12mm-hex-profile",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/rc-wheel-hex-12mm/rc-wheel-hex-12mm-hex-profile.step",
   "stl": "https://xemstudio.com/files/hardware/rc-wheel-hex-12mm/rc-wheel-hex-12mm-hex-profile.stl",
   "note": "Hexagon 12 mm across flats, 1 mm reference thickness (hub length not published)"
  }
 ],
 "markdown": "https://xemstudio.com/objects/rc-wheel-hex-12mm/index.md"
}