{
 "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": "wave-spring-washers-din-137",
 "name": "Wave spring washers: DIN 137 types A and B (M1.4–M36), bearing preload wave washers, Smalley wave spring example",
 "kind": "standard",
 "category": "Hardware",
 "group": "Fasteners",
 "year": null,
 "question": "What are the dimensions of a DIN 137 wave washer (M6, M8, M10), and which one preloads a bearing?",
 "tags": [
  "wave washer",
  "wave spring washer",
  "din 137",
  "curved spring washer",
  "crinkle washer",
  "bearing preload washer",
  "wave spring",
  "smalley wave spring",
  "fastener",
  "washer"
 ],
 "aliases": [
  "din 137 wave washer dimensions",
  "m6 wave washer",
  "m8 wave spring washer size",
  "wave washer m10 21 mm",
  "din 137 b m5",
  "bearing preload wave washer 6205",
  "wave washer free height",
  "din 137 a vs b",
  "wave washer thickness m4",
  "crest to crest wave spring dimensions",
  "6204 wave washer",
  "wave washer 8.4 15 0.8"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/wave-spring-washers-din-137/",
 "sheet_txt": "https://xemstudio.com/objects/wave-spring-washers-din-137/sheet.txt",
 "sheet": {
  "basis": "Westfield Fasteners' DIN 137 tables (type A M1.4 to M10, type B M3 to M36) cross-checked with ITA Fasteners' table (A / B M3 to M36, bearing wave washers) and Olander's M3 listing; one Smalley part as printed by IMS Supply; numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Millimetres unless marked. DIN 137 wave (curved) spring washers: bore d1, outside diameter d2, thickness s, free height h min / max, for the thread the washer suits. Westfield notes the standard has been withdrawn without a direct replacement, but the washers are still made to it. Type B is tabulated M3 to M36 with a thickness tolerance (H14 on the bore, js16 on the OD per Westfield). ITA prints one table for 'A / B' with the same numbers as Westfield's type B for every size M3 to M36 (and Olander's M3 DIN 137 B: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6, in agreement).",
   "Disagreement: Westfield's type A table (M1.4 to M10) has different, smaller values for the same thread (M3 type A: OD 6, thickness 0.4, height 0.65 to 1.3; type B / ITA: OD 8, 0.5, 0.8 to 1.6). Both are shown with the source named; ITA does not separate A from B.",
   "Bearing wave washers (ITA WB series, thickness ±0.1) fit between a bearing's outer ring and housing shoulder to preload it; the table gives the outside diameter De and inside diameter di limits and thickness T for the bearing type listed. ITA's load and height-at-load columns are not reproduced.",
   "Smalley's multi-turn crest-to-crest wave springs are made in many sizes (catalogue tables by part number were not readable); one real part is shown as printed: CS075-L4, bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in (reference), 3.5 waves per turn, 6 turns, 2 shims. No Smalley table, so no series is claimed.",
   "No files: the wave amplitude profile (number of waves, crest shape) is not published as numbers in any table read, so a model would be invented. Conical forms: conical-spring-washers-din-6796. McMaster-Carr sells wave washers with per-part STEP; linked, not copied."
  ],
  "table": {
   "columns": [
    "standard / source",
    "size",
    "bore d1 (mm)",
    "OD d2 (mm)",
    "thickness s (mm)",
    "s tolerance",
    "free height h min / max (mm)"
   ],
   "rows": [
    [
     "DIN 137 type A (Westfield)",
     "M1.4",
     1.5,
     3,
     0.25,
     "—",
     "0.4 / 0.8"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M1.6",
     1.8,
     4,
     0.25,
     "—",
     "0.45 / 0.9"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M1.7",
     1.8,
     4,
     0.25,
     "—",
     "0.45 / 0.9"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M2",
     2.2,
     4.5,
     0.3,
     "—",
     "0.5 / 1.0"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M2.3",
     2.5,
     5,
     0.3,
     "—",
     "0.5 / 1.0"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M2.5",
     2.6,
     5.5,
     0.3,
     "—",
     "0.55 / 1.1"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M2.6",
     2.8,
     5.5,
     0.3,
     "—",
     "0.55 / 1.1"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M3",
     3.2,
     6,
     0.4,
     "—",
     "0.65 / 1.3"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M3.5",
     3.7,
     7,
     0.4,
     "—",
     "0.7 / 1.4"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M4",
     4.3,
     8,
     0.5,
     "—",
     "0.8 / 1.6"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M5",
     5.3,
     10,
     0.5,
     "—",
     "0.9 / 1.8"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M6",
     6.4,
     11,
     0.5,
     "—",
     "1.1 / 2.2"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M7",
     7.4,
     12,
     0.5,
     "—",
     "1.2 / 2.4"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M8",
     8.4,
     15,
     0.5,
     "—",
     "1.7 / 3.4"
    ],
    [
     "DIN 137 type A (Westfield)",
     "M10",
     10.5,
     18,
     0.8,
     "—",
     "2.0 / 4.0"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M3",
     3.2,
     8,
     0.5,
     "±0.05",
     "0.8 / 1.6"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M3.5",
     3.7,
     8,
     0.5,
     "±0.05",
     "0.9 / 1.8"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M4",
     4.3,
     9,
     0.5,
     "±0.05",
     "1 / 2"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M5",
     5.3,
     11,
     0.5,
     "±0.05",
     "1.1 / 2.2"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M6",
     6.4,
     12,
     0.5,
     "±0.05",
     "1.3 / 2.6"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M7",
     7.4,
     14,
     0.8,
     "±0.06",
     "1.5 / 3"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M8",
     8.4,
     15,
     0.8,
     "±0.06",
     "1.5 / 3"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M10",
     10.5,
     21,
     1,
     "±0.07",
     "2.1 / 4.2"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M12",
     13,
     24,
     1.2,
     "±0.07",
     "2.5 / 5"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M14",
     15,
     28,
     1.6,
     "±0.08",
     "3 / 6"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M16",
     17,
     30,
     1.6,
     "±0.08",
     "3.2 / 6.4"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M18",
     19,
     34,
     1.6,
     "±0.08",
     "3.3 / 6.6"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M20",
     21,
     36,
     1.6,
     "±0.08",
     "3.7 / 7.4"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M22",
     23,
     40,
     1.8,
     "±0.1",
     "3.9 / 7.8"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M24",
     25,
     44,
     1.8,
     "±0.1",
     "4.1 / 8.2"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M27",
     28,
     50,
     2,
     "±0.1",
     "4.7 / 9.4"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M30",
     31,
     56,
     2.2,
     "±0.1",
     "5 / 10"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M33",
     34,
     60,
     2.2,
     "±0.1",
     "5.3 / 10.6"
    ],
    [
     "DIN 137 type B (Westfield; ITA identical)",
     "M36",
     37,
     68,
     2.5,
     "±0.15",
     "5.8 / 11.6"
    ],
    [
     "bearing wave washer WB-312604 (ITA), for bearing 6201",
     "—",
     "di 26.50 / 26.90",
     "De 31.20 / 31.50",
     0.4,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-383304 (ITA), for bearing 6203",
     "—",
     "di 33.00 / 33.50",
     "De 38.50 / 39.00",
     0.4,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-453905 (ITA), for bearing 6204",
     "—",
     "di 39.50 / 40.00",
     "De 45.50 / 46.00",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-494005 (ITA), for bearing 6205 / 6304",
     "—",
     "di 40.50 / 41.00",
     "De 49.50 / 50.00",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-596005 (ITA), for bearing 6206 / 6305",
     "—",
     "di 49.70 / 50.30",
     "De 59.70 / 60.30",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-696005 (ITA), for bearing 6306",
     "—",
     "di 60.00 / 60.50",
     "De 69.50 / 70.00",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-776905 (ITA), for bearing 6308",
     "—",
     "di 69.50 / 70.00",
     "De 77.50 / 78.00",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-877705 (ITA), for bearing 6308",
     "—",
     "di 77.50 / 78.00",
     "De 87.00 / 87.50",
     0.5,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-998108 (ITA), for bearing 6309",
     "—",
     "di 81.50 / 82.00",
     "De 99.20 / 99.70",
     0.8,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-1098908 (ITA), for bearing 6310 / 6212",
     "—",
     "di 89.50 / 90.00",
     "De 109.00 / 109.50",
     0.8,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-1199908 (ITA), for bearing 6213",
     "—",
     "di 99.50 / 100.00",
     "De 119.00 / 120.00",
     0.8,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-12210508 (ITA), for bearing 6214",
     "—",
     "di 105.00 / 105.50",
     "De 122.50 / 123.50",
     0.8,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-15713409 (ITA), for bearing 6215 / 6218",
     "—",
     "di 134.50 / 135.50",
     "De 157.50 / 158.50",
     0.9,
     "±0.1",
     "—"
    ],
    [
     "bearing wave washer WB-16814009 (ITA), for bearing 6318 / 6219",
     "—",
     "di 140.00 / 140.50",
     "De 168.00 / 169.00",
     0.9,
     "±0.1",
     "—"
    ],
    [
     "Smalley CS075-L4 crest-to-crest wave spring (IMS Supply), inch",
     "—",
     "shaft clearance 0.550 in",
     "bore 0.750 in",
     "0.008 in (wire thickness t)",
     "—",
     "free height 0.500 in (reference)"
    ]
   ]
  }
 },
 "sheet_text": "Wave spring washers: DIN 137 types A and B (M1.4–M36), bearing preload wave washers, Smalley wave spring example — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/wave-spring-washers-din-137/  (sheet CC BY 4.0)\nBasis: Westfield Fasteners' DIN 137 tables (type A M1.4 to M10, type B M3 to M36) cross-checked with ITA Fasteners' table (A / B M3 to M36, bearing wave washers) and Olander's M3 listing; one Smalley part as printed by IMS Supply; numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Millimetres unless marked. DIN 137 wave (curved) spring washers: bore d1, outside diameter d2, thickness s, free height h min / max, for the thread the washer suits. Westfield notes the standard has been withdrawn without a direct replacement, but the washers are still made to it. Type B is tabulated M3 to M36 with a thickness tolerance (H14 on the bore, js16 on the OD per Westfield). ITA prints one table for 'A / B' with the same numbers as Westfield's type B for every size M3 to M36 (and Olander's M3 DIN 137 B: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6, in agreement).\n- Disagreement: Westfield's type A table (M1.4 to M10) has different, smaller values for the same thread (M3 type A: OD 6, thickness 0.4, height 0.65 to 1.3; type B / ITA: OD 8, 0.5, 0.8 to 1.6). Both are shown with the source named; ITA does not separate A from B.\n- Bearing wave washers (ITA WB series, thickness ±0.1) fit between a bearing's outer ring and housing shoulder to preload it; the table gives the outside diameter De and inside diameter di limits and thickness T for the bearing type listed. ITA's load and height-at-load columns are not reproduced.\n- Smalley's multi-turn crest-to-crest wave springs are made in many sizes (catalogue tables by part number were not readable); one real part is shown as printed: CS075-L4, bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in (reference), 3.5 waves per turn, 6 turns, 2 shims. No Smalley table, so no series is claimed.\n- No files: the wave amplitude profile (number of waves, crest shape) is not published as numbers in any table read, so a model would be invented. Conical forms: conical-spring-washers-din-6796. McMaster-Carr sells wave washers with per-part STEP; linked, not copied.\n\nstandard / source  size  bore d1 (mm)  OD d2 (mm)  thickness s (mm)  s tolerance  free height h min / max (mm)\nDIN 137 type A (Westfield)  M1.4  1.5  3.0  0.25  —  0.4 / 0.8\nDIN 137 type A (Westfield)  M1.6  1.8  4.0  0.25  —  0.45 / 0.9\nDIN 137 type A (Westfield)  M1.7  1.8  4.0  0.25  —  0.45 / 0.9\nDIN 137 type A (Westfield)  M2  2.2  4.5  0.3  —  0.5 / 1.0\nDIN 137 type A (Westfield)  M2.3  2.5  5.0  0.3  —  0.5 / 1.0\nDIN 137 type A (Westfield)  M2.5  2.6  5.5  0.3  —  0.55 / 1.1\nDIN 137 type A (Westfield)  M2.6  2.8  5.5  0.3  —  0.55 / 1.1\nDIN 137 type A (Westfield)  M3  3.2  6.0  0.4  —  0.65 / 1.3\nDIN 137 type A (Westfield)  M3.5  3.7  7.0  0.4  —  0.7 / 1.4\nDIN 137 type A (Westfield)  M4  4.3  8.0  0.5  —  0.8 / 1.6\nDIN 137 type A (Westfield)  M5  5.3  10.0  0.5  —  0.9 / 1.8\nDIN 137 type A (Westfield)  M6  6.4  11.0  0.5  —  1.1 / 2.2\nDIN 137 type A (Westfield)  M7  7.4  12.0  0.5  —  1.2 / 2.4\nDIN 137 type A (Westfield)  M8  8.4  15.0  0.5  —  1.7 / 3.4\nDIN 137 type A (Westfield)  M10  10.5  18.0  0.8  —  2.0 / 4.0\nDIN 137 type B (Westfield; ITA identical)  M3  3.2  8  0.5  ±0.05  0.8 / 1.6\nDIN 137 type B (Westfield; ITA identical)  M3.5  3.7  8  0.5  ±0.05  0.9 / 1.8\nDIN 137 type B (Westfield; ITA identical)  M4  4.3  9  0.5  ±0.05  1 / 2\nDIN 137 type B (Westfield; ITA identical)  M5  5.3  11  0.5  ±0.05  1.1 / 2.2\nDIN 137 type B (Westfield; ITA identical)  M6  6.4  12  0.5  ±0.05  1.3 / 2.6\nDIN 137 type B (Westfield; ITA identical)  M7  7.4  14  0.8  ±0.06  1.5 / 3\nDIN 137 type B (Westfield; ITA identical)  M8  8.4  15  0.8  ±0.06  1.5 / 3\nDIN 137 type B (Westfield; ITA identical)  M10  10.5  21  1  ±0.07  2.1 / 4.2\nDIN 137 type B (Westfield; ITA identical)  M12  13  24  1.2  ±0.07  2.5 / 5\nDIN 137 type B (Westfield; ITA identical)  M14  15  28  1.6  ±0.08  3 / 6\nDIN 137 type B (Westfield; ITA identical)  M16  17  30  1.6  ±0.08  3.2 / 6.4\nDIN 137 type B (Westfield; ITA identical)  M18  19  34  1.6  ±0.08  3.3 / 6.6\nDIN 137 type B (Westfield; ITA identical)  M20  21  36  1.6  ±0.08  3.7 / 7.4\nDIN 137 type B (Westfield; ITA identical)  M22  23  40  1.8  ±0.1  3.9 / 7.8\nDIN 137 type B (Westfield; ITA identical)  M24  25  44  1.8  ±0.1  4.1 / 8.2\nDIN 137 type B (Westfield; ITA identical)  M27  28  50  2  ±0.1  4.7 / 9.4\nDIN 137 type B (Westfield; ITA identical)  M30  31  56  2.2  ±0.1  5 / 10\nDIN 137 type B (Westfield; ITA identical)  M33  34  60  2.2  ±0.1  5.3 / 10.6\nDIN 137 type B (Westfield; ITA identical)  M36  37  68  2.5  ±0.15  5.8 / 11.6\nbearing wave washer WB-312604 (ITA), for bearing 6201  —  di 26.50 / 26.90  De 31.20 / 31.50  0.4  ±0.1  —\nbearing wave washer WB-383304 (ITA), for bearing 6203  —  di 33.00 / 33.50  De 38.50 / 39.00  0.4  ±0.1  —\nbearing wave washer WB-453905 (ITA), for bearing 6204  —  di 39.50 / 40.00  De 45.50 / 46.00  0.5  ±0.1  —\nbearing wave washer WB-494005 (ITA), for bearing 6205 / 6304  —  di 40.50 / 41.00  De 49.50 / 50.00  0.5  ±0.1  —\nbearing wave washer WB-596005 (ITA), for bearing 6206 / 6305  —  di 49.70 / 50.30  De 59.70 / 60.30  0.5  ±0.1  —\nbearing wave washer WB-696005 (ITA), for bearing 6306  —  di 60.00 / 60.50  De 69.50 / 70.00  0.5  ±0.1  —\nbearing wave washer WB-776905 (ITA), for bearing 6308  —  di 69.50 / 70.00  De 77.50 / 78.00  0.5  ±0.1  —\nbearing wave washer WB-877705 (ITA), for bearing 6308  —  di 77.50 / 78.00  De 87.00 / 87.50  0.5  ±0.1  —\nbearing wave washer WB-998108 (ITA), for bearing 6309  —  di 81.50 / 82.00  De 99.20 / 99.70  0.8  ±0.1  —\nbearing wave washer WB-1098908 (ITA), for bearing 6310 / 6212  —  di 89.50 / 90.00  De 109.00 / 109.50  0.8  ±0.1  —\nbearing wave washer WB-1199908 (ITA), for bearing 6213  —  di 99.50 / 100.00  De 119.00 / 120.00  0.8  ±0.1  —\nbearing wave washer WB-12210508 (ITA), for bearing 6214  —  di 105.00 / 105.50  De 122.50 / 123.50  0.8  ±0.1  —\nbearing wave washer WB-15713409 (ITA), for bearing 6215 / 6218  —  di 134.50 / 135.50  De 157.50 / 158.50  0.9  ±0.1  —\nbearing wave washer WB-16814009 (ITA), for bearing 6318 / 6219  —  di 140.00 / 140.50  De 168.00 / 169.00  0.9  ±0.1  —\nSmalley CS075-L4 crest-to-crest wave spring (IMS Supply), inch  —  shaft clearance 0.550 in  bore 0.750 in  0.008 in (wire thickness t)  —  free height 0.500 in (reference)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Westfield Fasteners: DIN 137 wave / curved spring lock washers: type A (M1.4 to M10) and type B (M3 to M36): d1, d2, s, h min / max — web — Publisher's page; dimensions are facts — https://westfieldfasteners.co.uk/Standards/Washer-SprgWav-M.html\n- ITA Fasteners: Wave washers: DIN 137 A / B (M3 to M36), bearing wave washers WB series, inch / mm table — web — Distributor page; numbers only — https://itafasteners.com/products-washers-wave-ball.php\n- Olander: M3 wave spring washer DIN 137 B, stainless: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6 — web — Distributor page; numbers only — https://www.olander.com/items/.3NWAVS\n- IMS Supply (Smalley CS075-L4): Smalley crest-to-crest wave spring CS075-L4: bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in, 3.5 waves per turn, 6 turns — web — Distributor page; numbers only — https://www.imssupply.com/catalog/smalley/cs075-l4.html\n- McMaster-Carr: Wave washers (spacers: washer type, wave) (free STEP/IGES per part, for your own design use; no redistribution) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution [verify license at link] — https://www.mcmaster.com/spacers/washer-type~wave\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=wave-spring-washers-din-137\n",
 "sources": [
  {
   "publisher": "Westfield Fasteners",
   "title": "DIN 137 wave / curved spring lock washers: type A (M1.4 to M10) and type B (M3 to M36): d1, d2, s, h min / max",
   "url": "https://westfieldfasteners.co.uk/Standards/Washer-SprgWav-M.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ITA Fasteners",
   "title": "Wave washers: DIN 137 A / B (M3 to M36), bearing wave washers WB series, inch / mm table",
   "url": "https://itafasteners.com/products-washers-wave-ball.php",
   "formats": [
    "web"
   ],
   "license": "Distributor page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Olander",
   "title": "M3 wave spring washer DIN 137 B, stainless: ID 3.2, OD 8, thickness 0.5, height 0.8 to 1.6",
   "url": "https://www.olander.com/items/.3NWAVS",
   "formats": [
    "web"
   ],
   "license": "Distributor page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IMS Supply (Smalley CS075-L4)",
   "title": "Smalley crest-to-crest wave spring CS075-L4: bore 0.750 in, shaft clearance 0.550 in, thickness 0.008 in, free height 0.500 in, 3.5 waves per turn, 6 turns",
   "url": "https://www.imssupply.com/catalog/smalley/cs075-l4.html",
   "formats": [
    "web"
   ],
   "license": "Distributor page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "McMaster-Carr",
   "title": "Wave washers (spacers: washer type, wave) (free STEP/IGES per part, for your own design use; no redistribution)",
   "url": "https://www.mcmaster.com/spacers/washer-type~wave",
   "formats": [
    "STEP",
    "IGES",
    "PDF"
   ],
   "license": "McMaster-Carr site terms: personal design use, no redistribution",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "conical-spring-washers-din-6796",
  "disc-springs-din-2093",
  "spring-lock-washers-din-127-b",
  "ball-bearings-metric",
  "flat-washers-metric",
  "metric-shafts",
  "retaining-rings-din-471-external"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. 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. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [],
 "faq": [
  {
   "q": "What size is a DIN 137 B M8 wave washer?",
   "a": "Bore 8.4 mm, OD 15 mm, thickness 0.8 mm (±0.06), free height 1.5 to 3.0 mm (Westfield and ITA)."
  },
  {
   "q": "Which wave washer preloads a 6205 bearing?",
   "a": "ITA lists WB-494005 for 6205 / 6304: De 49.50 to 50.00 mm, di 40.50 to 41.00 mm, thickness 0.5 mm."
  },
  {
   "q": "Why are there two M3 wave washer sizes?",
   "a": "Westfield's type A is OD 6, 0.4 mm thick; type B (and ITA's A / B table) is OD 8, 0.5 mm thick. Check which form your supplier means."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/wave-spring-washers-din-137/index.md"
}