{
 "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": "lens-filter-threads",
 "name": "Lens filter threads: M40.5 × 0.5 to M112, pitch table and thread rings",
 "kind": "standard",
 "category": "Cameras & lenses",
 "group": "Lens mounts & filter threads",
 "year": null,
 "question": "What thread pitch is a 67 mm (or 52, 77, 82 mm) lens filter?",
 "tags": [
  "filter",
  "lens filter",
  "filter thread",
  "camera",
  "lens",
  "thread",
  "step ring",
  "lens cap",
  "standard"
 ],
 "aliases": [
  "filter thread pitch",
  "67mm filter thread pitch",
  "52mm filter thread",
  "77mm filter thread",
  "82mm filter thread",
  "lens filter thread size",
  "0.75 mm pitch filter",
  "M52x0.75",
  "M67x0.75",
  "M77x0.75",
  "M82x0.75",
  "step up ring thread",
  "lens cap thread stl",
  "filter thread stl"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 28,
 "url": "https://xemstudio.com/objects/lens-filter-threads/",
 "sheet_txt": "https://xemstudio.com/objects/lens-filter-threads/sheet.txt",
 "sheet": {
  "basis": "Diameter/pitch from Marumi's published filter thread table, cross-checked with Nikon's 'P = 0.75 mm' lens specs; profile from ISO 68-1 (IS 4218-1, identical)",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Screw-in lens filters, step rings, lens caps, hoods and filter holders use a fine metric thread at the front of the lens: the lens has the internal (female) thread, the filter's rear has the external (male) thread and the filter's front repeats the female one.",
   "Diameter and pitch: Marumi's published thread table (it states that its filters follow the ISO standard values). It gives 0.5 mm pitch up to 40.5 mm, 0.75 mm from 43 to 82 mm and 1.0 mm from 86 mm up. Nikon's own lens specifications state P = 0.75 mm for 46, 62, 67, 72, 77 and 82 mm, agreeing with that table.",
   "The 'rule' is a convention, not a law: Nikon lists its NIKKOR Z 14-24mm f/2.8 S at 112 mm with P = 0.75 mm, where Marumi's table gives 1.0 mm. Check the pitch your lens maker states (often written 'P = 0.75 mm') before cutting a 112 mm part. 112 mm is not drawn.",
   "37 mm, 39 mm and 105 mm filters exist but are not in the table I could source, so they are not listed here.",
   "Pitch Ø, minor Ø and thread depth are computed from the ISO 68-1 basic profile (60°, H = 0.866025 P, depth 5H/8, D2 = D − 0.649519 P, D1 = D − 1.082532 P).",
   "Files: for 14 common sizes, a male ring and a female ring 8 turns long, drawn exactly at the basic profile (maximum material, no tolerance, flat crest P/8 and root P/4, right hand). Union the male ring onto a cap, hood or adapter, or subtract the male ring from your part to make a female thread; add your own process allowance on the flanks. Ring walls (2 mm) and length are a design choice.",
   "Marumi's table also lists a 'basic size' column that it does not explain, and tolerances for its own threads; neither is used here."
  ],
  "table": {
   "columns": [
    "thread",
    "major Ø D (mm)",
    "pitch P (mm)",
    "pitch Ø D2 (mm)",
    "minor Ø D1 (mm)",
    "thread depth 5H/8 (mm)",
    "pitch from",
    "files"
   ],
   "rows": [
    [
     "M40.5 × 0.5",
     "40.5",
     "0.5",
     "40.175",
     "39.959",
     "0.271",
     "Marumi",
     "male + female rings"
    ],
    [
     "M43 × 0.75",
     "43",
     "0.75",
     "42.513",
     "42.188",
     "0.406",
     "Marumi",
     "male + female rings"
    ],
    [
     "M46 × 0.75",
     "46",
     "0.75",
     "45.513",
     "45.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M49 × 0.75",
     "49",
     "0.75",
     "48.513",
     "48.188",
     "0.406",
     "Marumi",
     "male + female rings"
    ],
    [
     "M52 × 0.75",
     "52",
     "0.75",
     "51.513",
     "51.188",
     "0.406",
     "Marumi",
     "male + female rings"
    ],
    [
     "M55 × 0.75",
     "55",
     "0.75",
     "54.513",
     "54.188",
     "0.406",
     "Marumi",
     "male + female rings"
    ],
    [
     "M58 × 0.75",
     "58",
     "0.75",
     "57.513",
     "57.188",
     "0.406",
     "Marumi",
     "male + female rings"
    ],
    [
     "M60 × 0.75",
     "60",
     "0.75",
     "59.513",
     "59.188",
     "0.406",
     "Marumi",
     "—"
    ],
    [
     "M62 × 0.75",
     "62",
     "0.75",
     "61.513",
     "61.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M67 × 0.75",
     "67",
     "0.75",
     "66.513",
     "66.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M72 × 0.75",
     "72",
     "0.75",
     "71.513",
     "71.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M77 × 0.75",
     "77",
     "0.75",
     "76.513",
     "76.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M82 × 0.75",
     "82",
     "0.75",
     "81.513",
     "81.188",
     "0.406",
     "Marumi · Nikon lists P = 0.75",
     "male + female rings"
    ],
    [
     "M86 × 1",
     "86",
     "1",
     "85.350",
     "84.917",
     "0.541",
     "Marumi",
     "male + female rings"
    ],
    [
     "M95 × 1",
     "95",
     "1",
     "94.350",
     "93.917",
     "0.541",
     "Marumi",
     "male + female rings"
    ],
    [
     "M100 × 1",
     "100",
     "1",
     "99.350",
     "98.917",
     "0.541",
     "Marumi",
     "—"
    ],
    [
     "M112 × 1",
     "112",
     "1",
     "111.350",
     "110.917",
     "0.541",
     "Marumi: 1.0 · Nikon (Z 14-24 f/2.8 S): 0.75 — sources differ",
     "—"
    ]
   ]
  }
 },
 "sheet_text": "Lens filter threads: M40.5 × 0.5 to M112, pitch table and thread rings — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/lens-filter-threads/  (sheet CC BY 4.0)\nBasis: Diameter/pitch from Marumi's published filter thread table, cross-checked with Nikon's 'P = 0.75 mm' lens specs; profile from ISO 68-1 (IS 4218-1, identical)\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Screw-in lens filters, step rings, lens caps, hoods and filter holders use a fine metric thread at the front of the lens: the lens has the internal (female) thread, the filter's rear has the external (male) thread and the filter's front repeats the female one.\n- Diameter and pitch: Marumi's published thread table (it states that its filters follow the ISO standard values). It gives 0.5 mm pitch up to 40.5 mm, 0.75 mm from 43 to 82 mm and 1.0 mm from 86 mm up. Nikon's own lens specifications state P = 0.75 mm for 46, 62, 67, 72, 77 and 82 mm, agreeing with that table.\n- The 'rule' is a convention, not a law: Nikon lists its NIKKOR Z 14-24mm f/2.8 S at 112 mm with P = 0.75 mm, where Marumi's table gives 1.0 mm. Check the pitch your lens maker states (often written 'P = 0.75 mm') before cutting a 112 mm part. 112 mm is not drawn.\n- 37 mm, 39 mm and 105 mm filters exist but are not in the table I could source, so they are not listed here.\n- Pitch Ø, minor Ø and thread depth are computed from the ISO 68-1 basic profile (60°, H = 0.866025 P, depth 5H/8, D2 = D − 0.649519 P, D1 = D − 1.082532 P).\n- Files: for 14 common sizes, a male ring and a female ring 8 turns long, drawn exactly at the basic profile (maximum material, no tolerance, flat crest P/8 and root P/4, right hand). Union the male ring onto a cap, hood or adapter, or subtract the male ring from your part to make a female thread; add your own process allowance on the flanks. Ring walls (2 mm) and length are a design choice.\n- Marumi's table also lists a 'basic size' column that it does not explain, and tolerances for its own threads; neither is used here.\n\nthread  major Ø D (mm)  pitch P (mm)  pitch Ø D2 (mm)  minor Ø D1 (mm)  thread depth 5H/8 (mm)  pitch from  files\nM40.5 × 0.5  40.5  0.5  40.175  39.959  0.271  Marumi  male + female rings\nM43 × 0.75  43  0.75  42.513  42.188  0.406  Marumi  male + female rings\nM46 × 0.75  46  0.75  45.513  45.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM49 × 0.75  49  0.75  48.513  48.188  0.406  Marumi  male + female rings\nM52 × 0.75  52  0.75  51.513  51.188  0.406  Marumi  male + female rings\nM55 × 0.75  55  0.75  54.513  54.188  0.406  Marumi  male + female rings\nM58 × 0.75  58  0.75  57.513  57.188  0.406  Marumi  male + female rings\nM60 × 0.75  60  0.75  59.513  59.188  0.406  Marumi  —\nM62 × 0.75  62  0.75  61.513  61.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM67 × 0.75  67  0.75  66.513  66.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM72 × 0.75  72  0.75  71.513  71.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM77 × 0.75  77  0.75  76.513  76.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM82 × 0.75  82  0.75  81.513  81.188  0.406  Marumi · Nikon lists P = 0.75  male + female rings\nM86 × 1  86  1  85.350  84.917  0.541  Marumi  male + female rings\nM95 × 1  95  1  94.350  93.917  0.541  Marumi  male + female rings\nM100 × 1  100  1  99.350  98.917  0.541  Marumi  —\nM112 × 1  112  1  111.350  110.917  0.541  Marumi: 1.0 · Nikon (Z 14-24 f/2.8 S): 0.75 — sources differ  —\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Marumi: FAQ: thread pitch — filter screw thread major diameter and pitch table (13.5 to 122 mm) — web — Publisher's page; dimensions are facts — https://marumi-global.com/blogs/technology/faq-thread-pitch\n- Nikon: NIKKOR Z lens brochure: filter-attachment size with pitch (P = 0.75 mm) — web — Publisher's page; dimensions are facts — https://cdn-4.nikon-cdn.com/e/Q5NM96RZZo-RRZZFeeMiveET0gpU-PYm90DZMEpjBfZRR51BYn9b4sjxcCuc2_t9Tr8iw3d-qf0=/Misc/NIKKOR-Z-Brochure.pdf\n- Nikon: NIKKOR Z DX 16-50mm f/3.5-6.3 VR specifications: filter-attachment size 46 mm (P = 0.75 mm) — web — Publisher's page; dimensions are facts — https://imaging.nikon.com/imaging/lineup/lens/z-mount/z_dx_16-50mmf35-63_vr/\n- Nikon: NIKKOR Z 14-24mm f/2.8 S specifications: filter-attachment size 112 mm (P = 0.75 mm) — web — Publisher's page; dimensions are facts — https://imaging.nikon.com/imaging/lineup/lens/z-mount/z_14-24mmf28s/\n- Bureau of Indian Standards (via Public.Resource.Org): IS 4218 (Part 1):2001 ISO general purpose metric screw threads, basic profile (identical with ISO 68-1:1998): H = 0.866025404 P, 5H/8 = 0.541265877 P, 3H/8 = 0.324759526 P — web — Public.Resource.Org (public law); dimensions are facts — https://law.resource.org/pub/in/bis/S01/is.4218.1.2001.pdf\n- ISO: ISO 68-1:1998 ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads — web — Publisher's page; dimensions are facts — https://www.iso.org/standard/3707.html\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 28 parts): https://xemstudio.com/files/hardware/lens-filter-threads/index.json\nAPI: https://xemstudio.com/api/geometry?object=lens-filter-threads\n",
 "sources": [
  {
   "publisher": "Marumi",
   "title": "FAQ: thread pitch — filter screw thread major diameter and pitch table (13.5 to 122 mm)",
   "url": "https://marumi-global.com/blogs/technology/faq-thread-pitch",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Nikon",
   "title": "NIKKOR Z lens brochure: filter-attachment size with pitch (P = 0.75 mm)",
   "url": "https://cdn-4.nikon-cdn.com/e/Q5NM96RZZo-RRZZFeeMiveET0gpU-PYm90DZMEpjBfZRR51BYn9b4sjxcCuc2_t9Tr8iw3d-qf0=/Misc/NIKKOR-Z-Brochure.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Nikon",
   "title": "NIKKOR Z DX 16-50mm f/3.5-6.3 VR specifications: filter-attachment size 46 mm (P = 0.75 mm)",
   "url": "https://imaging.nikon.com/imaging/lineup/lens/z-mount/z_dx_16-50mmf35-63_vr/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Nikon",
   "title": "NIKKOR Z 14-24mm f/2.8 S specifications: filter-attachment size 112 mm (P = 0.75 mm)",
   "url": "https://imaging.nikon.com/imaging/lineup/lens/z-mount/z_14-24mmf28s/",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Bureau of Indian Standards (via Public.Resource.Org)",
   "title": "IS 4218 (Part 1):2001 ISO general purpose metric screw threads, basic profile (identical with ISO 68-1:1998): H = 0.866025404 P, 5H/8 = 0.541265877 P, 3H/8 = 0.324759526 P",
   "url": "https://law.resource.org/pub/in/bis/S01/is.4218.1.2001.pdf",
   "formats": [
    "web"
   ],
   "license": "Public.Resource.Org (public law); dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ISO",
   "title": "ISO 68-1:1998 ISO general purpose screw threads — Basic profile — Part 1: Metric screw threads",
   "url": "https://www.iso.org/standard/3707.html",
   "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": [
  "nikon-z-mount",
  "sony-e-mount",
  "canon-rf-mount",
  "t-mount-t2",
  "m42-screw-mount"
 ],
 "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": "What thread pitch is a 67 mm filter?",
   "a": "0.75 mm (M67 × 0.75), per Marumi's thread table; Nikon also states P = 0.75 mm on its 67 mm lenses."
  },
  {
   "q": "Which filter sizes use 0.5 mm pitch?",
   "a": "In Marumi's table, 40.5 mm and smaller; 43 to 82 mm use 0.75 mm and 86 mm and up use 1.0 mm."
  },
  {
   "q": "Is every 112 mm filter thread 1.0 mm pitch?",
   "a": "No: Marumi's table gives 1.0 mm, but Nikon lists its Z 14-24mm f/2.8 S at 112 mm with P = 0.75 mm. Check the lens maker's spec."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "filter-thread-m40-5x0-5-male-ring",
   "formats": [
    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m40-5x0-5-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m40-5x0-5-male-ring.stl",
   "note": "M40.5 × 0.5 filter external thread ring section: ISO 68-1 basic profile, major Ø40.5, pitch Ø40.175, minor Ø39.959, pitch 0.5; 4 long (8 turns), bore Ø35.959 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m40-5x0-5-female-ring",
   "formats": [
    "step",
    "stl"
   ],
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m40-5x0-5-female-ring.stl",
   "note": "M40.5 × 0.5 filter internal thread ring section: ISO 68-1 basic profile, minor Ø39.959, pitch Ø40.175, major Ø40.5, pitch 0.5; 4 long (8 turns), outside Ø44.5 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m43x0-75-male-ring",
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    "step",
    "stl"
   ],
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m43x0-75-male-ring.stl",
   "note": "M43 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø43, pitch Ø42.513, minor Ø42.188, pitch 0.75; 6 long (8 turns), bore Ø38.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m43x0-75-female-ring",
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    "step",
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   ],
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m43x0-75-female-ring.stl",
   "note": "M43 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø42.188, pitch Ø42.513, major Ø43, pitch 0.75; 6 long (8 turns), outside Ø47 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m46x0-75-male-ring",
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    "step",
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   ],
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m46x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m46x0-75-male-ring.stl",
   "note": "M46 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø46, pitch Ø45.513, minor Ø45.188, pitch 0.75; 6 long (8 turns), bore Ø41.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m46x0-75-female-ring",
   "formats": [
    "step",
    "stl"
   ],
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   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m46x0-75-female-ring.stl",
   "note": "M46 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø45.188, pitch Ø45.513, major Ø46, pitch 0.75; 6 long (8 turns), outside Ø50 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m49x0-75-male-ring",
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   ],
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m49x0-75-male-ring.stl",
   "note": "M49 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø49, pitch Ø48.513, minor Ø48.188, pitch 0.75; 6 long (8 turns), bore Ø44.188 (wall is a design choice); exact nominal, no tolerance"
  },
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   "file": "filter-thread-m49x0-75-female-ring",
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    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m49x0-75-female-ring.stl",
   "note": "M49 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø48.188, pitch Ø48.513, major Ø49, pitch 0.75; 6 long (8 turns), outside Ø53 (design choice); exact nominal, no tolerance"
  },
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   "file": "filter-thread-m52x0-75-male-ring",
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   ],
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   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m52x0-75-male-ring.stl",
   "note": "M52 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø52, pitch Ø51.513, minor Ø51.188, pitch 0.75; 6 long (8 turns), bore Ø47.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m52x0-75-female-ring",
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    "step",
    "stl"
   ],
   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m52x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m52x0-75-female-ring.stl",
   "note": "M52 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø51.188, pitch Ø51.513, major Ø52, pitch 0.75; 6 long (8 turns), outside Ø56 (design choice); exact nominal, no tolerance"
  },
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   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m55x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m55x0-75-male-ring.stl",
   "note": "M55 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø55, pitch Ø54.513, minor Ø54.188, pitch 0.75; 6 long (8 turns), bore Ø50.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m55x0-75-female-ring",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m55x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m55x0-75-female-ring.stl",
   "note": "M55 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø54.188, pitch Ø54.513, major Ø55, pitch 0.75; 6 long (8 turns), outside Ø59 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m58x0-75-male-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m58x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m58x0-75-male-ring.stl",
   "note": "M58 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø58, pitch Ø57.513, minor Ø57.188, pitch 0.75; 6 long (8 turns), bore Ø53.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m58x0-75-female-ring",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m58x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m58x0-75-female-ring.stl",
   "note": "M58 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø57.188, pitch Ø57.513, major Ø58, pitch 0.75; 6 long (8 turns), outside Ø62 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m62x0-75-male-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m62x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m62x0-75-male-ring.stl",
   "note": "M62 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø62, pitch Ø61.513, minor Ø61.188, pitch 0.75; 6 long (8 turns), bore Ø57.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m62x0-75-female-ring",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m62x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m62x0-75-female-ring.stl",
   "note": "M62 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø61.188, pitch Ø61.513, major Ø62, pitch 0.75; 6 long (8 turns), outside Ø66 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m67x0-75-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m67x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m67x0-75-male-ring.stl",
   "note": "M67 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø67, pitch Ø66.513, minor Ø66.188, pitch 0.75; 6 long (8 turns), bore Ø62.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m67x0-75-female-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m67x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m67x0-75-female-ring.stl",
   "note": "M67 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø66.188, pitch Ø66.513, major Ø67, pitch 0.75; 6 long (8 turns), outside Ø71 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m72x0-75-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m72x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m72x0-75-male-ring.stl",
   "note": "M72 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø72, pitch Ø71.513, minor Ø71.188, pitch 0.75; 6 long (8 turns), bore Ø67.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m72x0-75-female-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m72x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m72x0-75-female-ring.stl",
   "note": "M72 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø71.188, pitch Ø71.513, major Ø72, pitch 0.75; 6 long (8 turns), outside Ø76 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m77x0-75-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m77x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m77x0-75-male-ring.stl",
   "note": "M77 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø77, pitch Ø76.513, minor Ø76.188, pitch 0.75; 6 long (8 turns), bore Ø72.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m77x0-75-female-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m77x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m77x0-75-female-ring.stl",
   "note": "M77 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø76.188, pitch Ø76.513, major Ø77, pitch 0.75; 6 long (8 turns), outside Ø81 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m82x0-75-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m82x0-75-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m82x0-75-male-ring.stl",
   "note": "M82 × 0.75 filter external thread ring section: ISO 68-1 basic profile, major Ø82, pitch Ø81.513, minor Ø81.188, pitch 0.75; 6 long (8 turns), bore Ø77.188 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m82x0-75-female-ring",
   "formats": [
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m82x0-75-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m82x0-75-female-ring.stl",
   "note": "M82 × 0.75 filter internal thread ring section: ISO 68-1 basic profile, minor Ø81.188, pitch Ø81.513, major Ø82, pitch 0.75; 6 long (8 turns), outside Ø86 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m86x1-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m86x1-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m86x1-male-ring.stl",
   "note": "M86 × 1 filter external thread ring section: ISO 68-1 basic profile, major Ø86, pitch Ø85.350, minor Ø84.917, pitch 1; 8 long (8 turns), bore Ø80.917 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m86x1-female-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m86x1-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m86x1-female-ring.stl",
   "note": "M86 × 1 filter internal thread ring section: ISO 68-1 basic profile, minor Ø84.917, pitch Ø85.350, major Ø86, pitch 1; 8 long (8 turns), outside Ø90 (design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m95x1-male-ring",
   "formats": [
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    "stl"
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   "price_usd": 0,
   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m95x1-male-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m95x1-male-ring.stl",
   "note": "M95 × 1 filter external thread ring section: ISO 68-1 basic profile, major Ø95, pitch Ø94.350, minor Ø93.917, pitch 1; 8 long (8 turns), bore Ø89.917 (wall is a design choice); exact nominal, no tolerance"
  },
  {
   "file": "filter-thread-m95x1-female-ring",
   "formats": [
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    "stl"
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m95x1-female-ring.step",
   "stl": "https://xemstudio.com/files/hardware/lens-filter-threads/filter-thread-m95x1-female-ring.stl",
   "note": "M95 × 1 filter internal thread ring section: ISO 68-1 basic profile, minor Ø93.917, pitch Ø94.350, major Ø95, pitch 1; 8 long (8 turns), outside Ø99 (design choice); exact nominal, no tolerance"
  }
 ],
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}