{
 "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": "m-2-2242-ssd",
 "name": "M.2 2242 SSD / module size",
 "kind": "modern",
 "category": "Electronics",
 "group": "Computer storage",
 "year": null,
 "question": "What size is an M.2 2242 SSD?",
 "tags": [
  "m.2",
  "ssd",
  "nvme",
  "computer"
 ],
 "aliases": [
  "m.2 2242 dimensions",
  "m.2 2242 size",
  "2242 ssd size"
 ],
 "overall_mm": {
  "length": 42,
  "width": 22,
  "height": 0.8
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/m-2-2242-ssd/",
 "sheet_txt": "https://xemstudio.com/objects/m-2-2242-ssd/sheet.txt",
 "sheet": {
  "basis": "SNIA M.2 overview (PCI-SIG M.2 form factor)",
  "overall_mm": {
   "length": 42,
   "width": 22,
   "height": 0.8
  },
  "notes": [
   "M.2 2242: 22 mm wide × 42 mm long (the code is width then length).",
   "Component height classes: single-sided S1 1.2, S2 1.35, S3 1.5 mm above the board; double-sided D1–D3 up to 1.50 mm top / 1.35 mm bottom.",
   "Key notches: B key pins 12–19, M key pins 59–66 of the 75-position edge connector. Board thickness and screw-notch position are in the members-only spec (not published openly).",
   "The file is the board outline (no notch, 0.8 mm nominal) — check the screw position on your drive."
  ],
  "table": {
   "columns": [
    "dimension",
    "value"
   ],
   "rows": [
    [
     "width",
     "22 mm"
    ],
    [
     "length",
     "42 mm"
    ],
    [
     "S3 top components",
     "1.50 mm"
    ],
    [
     "B key",
     "pins 12–19"
    ],
    [
     "M key",
     "pins 59–66"
    ]
   ]
  }
 },
 "sheet_text": "M.2 2242 SSD / module size — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/m-2-2242-ssd/  (CC BY 4.0)\nBasis: SNIA M.2 overview (PCI-SIG M.2 form factor)\nCatalog version: 2026-10-20\n\nOverall (mm): length 42, width 22, height 0.8\n- M.2 2242: 22 mm wide × 42 mm long (the code is width then length).\n- Component height classes: single-sided S1 1.2, S2 1.35, S3 1.5 mm above the board; double-sided D1–D3 up to 1.50 mm top / 1.35 mm bottom.\n- Key notches: B key pins 12–19, M key pins 59–66 of the 75-position edge connector. Board thickness and screw-notch position are in the members-only spec (not published openly).\n- The file is the board outline (no notch, 0.8 mm nominal) — check the screw position on your drive.\n\ndimension  value\nwidth  22 mm\nlength  42 mm\nS3 top components  1.50 mm\nB key  pins 12–19\nM key  pins 59–66\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- SNIA: M.2 form factor overview (PDF) — web — Publisher's page; dimensions are facts — https://www.snia.org/sites/default/files/12May%20M.2%20Tanguy%20M.2.pdf\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/m-2-2242-ssd/index.json\nAPI: https://xemstudio.com/api/geometry?object=m-2-2242-ssd\n",
 "sources": [
  {
   "publisher": "SNIA",
   "title": "M.2 form factor overview (PDF)",
   "url": "https://www.snia.org/sites/default/files/12May%20M.2%20Tanguy%20M.2.pdf",
   "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": [
  "m-2-2230-ssd",
  "m-2-2260-ssd",
  "m-2-2280-ssd",
  "2-5-inch-drive"
 ],
 "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 big is an M.2 2242?",
   "a": "22 × 42 mm."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "m2-2242-board",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/m-2-2242-ssd/m2-2242-board.step",
   "stl": "https://xemstudio.com/files/hardware/m-2-2242-ssd/m2-2242-board.stl",
   "note": "42 × 22 mm board outline, 0.8 mm"
  }
 ],
 "markdown": "https://xemstudio.com/objects/m-2-2242-ssd/index.md"
}