{
 "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": "razor-and-utility-blades",
 "name": "Razor and utility blade sizes: double-edge 43 × 22.2 × 0.1 mm, utility 61 × 19 × 0.65 mm",
 "kind": "standard",
 "category": "Everyday objects",
 "group": "Household",
 "year": null,
 "question": "What size is a double-edge razor blade?",
 "tags": [
  "razor",
  "blade",
  "utility knife",
  "shaving",
  "safety razor"
 ],
 "aliases": [
  "safety razor blade size",
  "double edge blade dimensions",
  "utility knife blade size",
  "box cutter blade dimensions",
  "razor blade bank"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 4,
 "url": "https://xemstudio.com/objects/razor-and-utility-blades/",
 "sheet_txt": "https://xemstudio.com/objects/razor-and-utility-blades/sheet.txt",
 "sheet": {
  "basis": "Lab-supply listing for double-edge blades; tool-maker and retailer listings for trapezoid utility blades",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Double-edge (safety razor) blades: 43 × 22.2 mm, 0.10 mm thick, carbon or stainless steel; the centre slot pattern is not published, so holders should clamp by the edges or use the razor's own posts.",
   "Trapezoid utility (box-cutter) blades: 61 mm long, 18.7–19 mm wide, 0.65 mm thick; end angle and the two back notches are not published (they vary little; measure one).",
   "Cartridge razors (Gillette, Schick, Harry's...) are brand-specific: a measured Xem scan is planned on request.",
   "Blade banks (free STL): slot sized for each blade; print PETG, close the box with the last layer and recycle it full as sharps."
  ],
  "table": {
   "columns": [
    "blade",
    "length_mm",
    "width_mm",
    "thickness_mm"
   ],
   "rows": [
    [
     "double-edge safety razor",
     43,
     22.2,
     0.1
    ],
    [
     "trapezoid utility blade (Tecwerk)",
     61,
     18.7,
     0.65
    ],
    [
     "trapezoid utility blade (Screwfix listing)",
     61,
     19,
     null
    ]
   ]
  }
 },
 "sheet_text": "Razor and utility blade sizes: double-edge 43 × 22.2 × 0.1 mm, utility 61 × 19 × 0.65 mm — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/razor-and-utility-blades/  (CC BY 4.0)\nBasis: Lab-supply listing for double-edge blades; tool-maker and retailer listings for trapezoid utility blades\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Double-edge (safety razor) blades: 43 × 22.2 mm, 0.10 mm thick, carbon or stainless steel; the centre slot pattern is not published, so holders should clamp by the edges or use the razor's own posts.\n- Trapezoid utility (box-cutter) blades: 61 mm long, 18.7–19 mm wide, 0.65 mm thick; end angle and the two back notches are not published (they vary little; measure one).\n- Cartridge razors (Gillette, Schick, Harry's...) are brand-specific: a measured Xem scan is planned on request.\n- Blade banks (free STL): slot sized for each blade; print PETG, close the box with the last layer and recycle it full as sharps.\n\nblade  length_mm  width_mm  thickness_mm\ndouble-edge safety razor  43.0  22.2  0.1\ntrapezoid utility blade (Tecwerk)  61.0  18.7  0.65\ntrapezoid utility blade (Screwfix listing)  61.0  19.0  None\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Electron Microscopy Sciences: Breakable double-edge razor blades (43 × 22.2 × 0.10 mm) — web — Publisher's page; dimensions are facts — https://www.emsdiasum.com/j-breakable-double-edge-razor-blades\n- Nordwest Tecwerk: Trapezoid blade 61 × 18.7 × 0.65 mm — web — Publisher's page; dimensions are facts — https://www.nordwest-tecwerk.com/en/products/hand-tools/cutting-tools/blades/trapezoid-blades/trapezoid-blade-tecwerk?page=42\n- Screwfix: Straight utility knife blade 61 × 19 mm — web — Publisher's page; dimensions are facts — https://www.screwfix.com/p/forge-steel-straight-utility-knife-blade-10-pack/401yc\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 4 parts): https://xemstudio.com/files/hardware/razor-and-utility-blades/index.json\nAPI: https://xemstudio.com/api/geometry?object=razor-and-utility-blades\n",
 "sources": [
  {
   "publisher": "Electron Microscopy Sciences",
   "title": "Breakable double-edge razor blades (43 × 22.2 × 0.10 mm)",
   "url": "https://www.emsdiasum.com/j-breakable-double-edge-razor-blades",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Nordwest Tecwerk",
   "title": "Trapezoid blade 61 × 18.7 × 0.65 mm",
   "url": "https://www.nordwest-tecwerk.com/en/products/hand-tools/cutting-tools/blades/trapezoid-blades/trapezoid-blade-tecwerk?page=42",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Screwfix",
   "title": "Straight utility knife blade 61 × 19 mm",
   "url": "https://www.screwfix.com/p/forge-steel-straight-utility-knife-blade-10-pack/401yc",
   "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": [
  "cookware-lids-and-pans",
  "pegboard-standard"
 ],
 "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 a safety razor blade?",
   "a": "43 × 22.2 mm, 0.10 mm thick."
  },
  {
   "q": "How big is a utility knife blade?",
   "a": "61 mm long, about 19 mm wide, 0.65 mm thick."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "de-blade-envelope-43x22.2x0.1",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/razor-and-utility-blades/de-blade-envelope-43x22.2x0.1.step",
   "stl": "https://xemstudio.com/files/hardware/razor-and-utility-blades/de-blade-envelope-43x22.2x0.1.stl",
   "note": "Double-edge blade envelope 43 × 22.2 × 0.10 mm (centre slot not modelled)"
  },
  {
   "file": "utility-blade-envelope-61x18.7x0.65",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/razor-and-utility-blades/utility-blade-envelope-61x18.7x0.65.step",
   "stl": "https://xemstudio.com/files/hardware/razor-and-utility-blades/utility-blade-envelope-61x18.7x0.65.stl",
   "note": "Trapezoid utility blade bounding box 61 × 18.7 × 0.65 mm (ends and notches not modelled)"
  },
  {
   "file": "blade-bank-de",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/razor-and-utility-blades/blade-bank-de.step",
   "stl": "https://xemstudio.com/files/hardware/razor-and-utility-blades/blade-bank-de.stl",
   "note": "Used-blade bank with a 46 × 1.2 mm slot for double-edge blades"
  },
  {
   "file": "blade-bank-utility",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/razor-and-utility-blades/blade-bank-utility.step",
   "stl": "https://xemstudio.com/files/hardware/razor-and-utility-blades/blade-bank-utility.stl",
   "note": "Used-blade bank with a 64 × 1.4 mm slot for utility blades"
  }
 ],
 "markdown": "https://xemstudio.com/objects/razor-and-utility-blades/index.md"
}