{
 "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": "push-button-clamping-levers-gn-303-2",
 "name": "Push-button adjustable levers GN 303.2: lever length 30 to 78 mm, thread M4 to M10 and inch, stud length, stroke",
 "kind": "standard",
 "category": "Hardware",
 "group": "Knobs, handles & feet",
 "year": null,
 "question": "What are the dimensions of a GN 303.2 adjustable lever with a release push button: lever length, thread, stud length and hub dimensions?",
 "tags": [
  "clamping lever",
  "adjustable lever",
  "push button",
  "gn 303",
  "gn 303.2",
  "release button",
  "threaded stud",
  "hand lever"
 ],
 "aliases": [
  "gn 303",
  "gn 303.2",
  "gn 303.2 dimensions",
  "adjustable lever push button",
  "clamping lever with release button",
  "gn 303.2 m6",
  "gn 303.2 45 mm",
  "push button ratchet lever",
  "adjustable hand lever push button m8",
  "gn 303.2 63 m8 stud",
  "indexing lever button release",
  "gn 303 vs gn 300"
 ],
 "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/push-button-clamping-levers-gn-303-2/",
 "sheet_txt": "https://xemstudio.com/objects/push-button-clamping-levers-gn-303-2/sheet.txt",
 "sheet": {
  "basis": "JW Winco's GN 303.2 table (printed in inches), mm converted",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "GN 303.2 is the adjustable lever of the GN 300 family with a push button: press the button to release the serrations instead of pulling the lever up. JW Winco's table (threaded stud, zinc-plated steel stud, PA push button, powder-coated black body) is printed in inches with the stud lengths l2 in inches; the lever lengths 1.18 / 1.77 / 2.48 / 3.07 in are the 30 / 45 / 63 / 78 mm levers, and l2 in the part numbers is in mm (shown here in mm). The millimetre figures in brackets are the printed inches × 25.4 (the sheet prints only two decimals, so they are good to about ±0.3 mm). Letters are JW Winco's: this sheet prints d2, d3, h1, h2, h3 and h4 (stroke); the GN 300 sheet prints d3, d4, h1 to h4 for the same lever sizes and the 45 mm lever has the same 10 / 13 mm pair under d2 / d3 here and d3 / d4 there (h1 differs: 26.5 mm with the button, 24.5 without), so the letters are not interchangeable.",
   "The push-button lever covers four lever sizes (30 to 78 mm), M4 to M10 and #10-32 to 1/2-13 threads; the 10-24 rows of the 30 mm lever and the 10-32 rows of the 30 mm lever have no entries on the sheet. The lever cannot be taken apart once assembled (JW Winco: for applications where the lever does not need to be disassembled).",
   "Numbers only: no outline of the lever and button is published as coordinates."
  ],
  "table": {
   "columns": [
    "lever length l1, mm",
    "thread d1",
    "stud lengths l2, mm",
    "d2, in (mm)",
    "d3, in (mm)",
    "h1, in (mm)",
    "h2, in (mm)",
    "h3, in (mm)",
    "h4 stroke, in (mm)"
   ],
   "rows": [
    [
     "30",
     "M4",
     "12, 16, 20, 25, 32",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.22 (31.0)",
     "0.14 (3.6)"
    ],
    [
     "30",
     "M5",
     "12, 16, 20, 25, 32, 40, 50",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.22 (31.0)",
     "0.14 (3.6)"
    ],
    [
     "30",
     "M6",
     "12, 16, 20, 25, 32, 40, 50",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.22 (31.0)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "10-32",
     "10, 12, 16, 20, 25, 32",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "10-24",
     "16, 20, 32",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "1/4-20",
     "10, 12, 16, 20, 25, 32, 40, 45",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "M4",
     "12, 16, 20, 25, 32",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "M5",
     "12, 16, 20, 25, 32, 40, 50",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "45",
     "M6",
     "12, 16, 20, 25, 32, 40, 50",
     "0.39 (9.9)",
     "0.51 (13.0)",
     "1.04 (26.4)",
     "0.16 (4.1)",
     "1.38 (35.1)",
     "0.14 (3.6)"
    ],
    [
     "63",
     "1/4-20",
     "16, 20, 25",
     "0.53 (13.5)",
     "0.69 (17.5)",
     "1.28 (32.5)",
     "0.26 (6.6)",
     "1.77 (45.0)",
     "0.16 (4.1)"
    ],
    [
     "63",
     "5/16-18",
     "12, 16, 20, 25, 32, 40, 45, 50, 63",
     "0.53 (13.5)",
     "0.69 (17.5)",
     "1.28 (32.5)",
     "0.26 (6.6)",
     "1.77 (45.0)",
     "0.16 (4.1)"
    ],
    [
     "63",
     "M6",
     "16, 20, 25, 32, 40, 50, 63",
     "0.53 (13.5)",
     "0.69 (17.5)",
     "1.28 (32.5)",
     "0.26 (6.6)",
     "1.77 (45.0)",
     "0.16 (4.1)"
    ],
    [
     "63",
     "M8",
     "16, 20, 25, 32, 40, 50, 63",
     "0.53 (13.5)",
     "0.69 (17.5)",
     "1.28 (32.5)",
     "0.26 (6.6)",
     "1.77 (45.0)",
     "0.16 (4.1)"
    ],
    [
     "78",
     "3/8-16",
     "16, 20, 25, 32, 40, 45, 50, 63",
     "0.63 (16.0)",
     "0.83 (21.1)",
     "1.48 (37.6)",
     "0.31 (7.9)",
     "2.17 (55.1)",
     "0.16 (4.1)"
    ],
    [
     "78",
     "1/2-13",
     "32, 40",
     "0.63 (16.0)",
     "0.83 (21.1)",
     "1.48 (37.6)",
     "0.31 (7.9)",
     "2.17 (55.1)",
     "0.16 (4.1)"
    ],
    [
     "78",
     "M8",
     "20, 25, 32, 40, 50, 63, 80",
     "0.63 (16.0)",
     "0.83 (21.1)",
     "1.48 (37.6)",
     "0.31 (7.9)",
     "2.17 (55.1)",
     "0.16 (4.1)"
    ],
    [
     "78",
     "M10",
     "20, 25, 32, 40, 50, 63, 80",
     "0.63 (16.0)",
     "0.83 (21.1)",
     "1.48 (37.6)",
     "0.31 (7.9)",
     "2.17 (55.1)",
     "0.16 (4.1)"
    ]
   ]
  }
 },
 "sheet_text": "Push-button adjustable levers GN 303.2: lever length 30 to 78 mm, thread M4 to M10 and inch, stud length, stroke — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/push-button-clamping-levers-gn-303-2/  (sheet CC BY 4.0)\nBasis: JW Winco's GN 303.2 table (printed in inches), mm converted\nCatalog version: 2026-10-20\n\nSizes: see table below\n- GN 303.2 is the adjustable lever of the GN 300 family with a push button: press the button to release the serrations instead of pulling the lever up. JW Winco's table (threaded stud, zinc-plated steel stud, PA push button, powder-coated black body) is printed in inches with the stud lengths l2 in inches; the lever lengths 1.18 / 1.77 / 2.48 / 3.07 in are the 30 / 45 / 63 / 78 mm levers, and l2 in the part numbers is in mm (shown here in mm). The millimetre figures in brackets are the printed inches × 25.4 (the sheet prints only two decimals, so they are good to about ±0.3 mm). Letters are JW Winco's: this sheet prints d2, d3, h1, h2, h3 and h4 (stroke); the GN 300 sheet prints d3, d4, h1 to h4 for the same lever sizes and the 45 mm lever has the same 10 / 13 mm pair under d2 / d3 here and d3 / d4 there (h1 differs: 26.5 mm with the button, 24.5 without), so the letters are not interchangeable.\n- The push-button lever covers four lever sizes (30 to 78 mm), M4 to M10 and #10-32 to 1/2-13 threads; the 10-24 rows of the 30 mm lever and the 10-32 rows of the 30 mm lever have no entries on the sheet. The lever cannot be taken apart once assembled (JW Winco: for applications where the lever does not need to be disassembled).\n- Numbers only: no outline of the lever and button is published as coordinates.\n\nlever length l1, mm  thread d1  stud lengths l2, mm  d2, in (mm)  d3, in (mm)  h1, in (mm)  h2, in (mm)  h3, in (mm)  h4 stroke, in (mm)\n30  M4  12, 16, 20, 25, 32  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.22 (31.0)  0.14 (3.6)\n30  M5  12, 16, 20, 25, 32, 40, 50  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.22 (31.0)  0.14 (3.6)\n30  M6  12, 16, 20, 25, 32, 40, 50  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.22 (31.0)  0.14 (3.6)\n45  10-32  10, 12, 16, 20, 25, 32  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n45  10-24  16, 20, 32  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n45  1/4-20  10, 12, 16, 20, 25, 32, 40, 45  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n45  M4  12, 16, 20, 25, 32  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n45  M5  12, 16, 20, 25, 32, 40, 50  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n45  M6  12, 16, 20, 25, 32, 40, 50  0.39 (9.9)  0.51 (13.0)  1.04 (26.4)  0.16 (4.1)  1.38 (35.1)  0.14 (3.6)\n63  1/4-20  16, 20, 25  0.53 (13.5)  0.69 (17.5)  1.28 (32.5)  0.26 (6.6)  1.77 (45.0)  0.16 (4.1)\n63  5/16-18  12, 16, 20, 25, 32, 40, 45, 50, 63  0.53 (13.5)  0.69 (17.5)  1.28 (32.5)  0.26 (6.6)  1.77 (45.0)  0.16 (4.1)\n63  M6  16, 20, 25, 32, 40, 50, 63  0.53 (13.5)  0.69 (17.5)  1.28 (32.5)  0.26 (6.6)  1.77 (45.0)  0.16 (4.1)\n63  M8  16, 20, 25, 32, 40, 50, 63  0.53 (13.5)  0.69 (17.5)  1.28 (32.5)  0.26 (6.6)  1.77 (45.0)  0.16 (4.1)\n78  3/8-16  16, 20, 25, 32, 40, 45, 50, 63  0.63 (16.0)  0.83 (21.1)  1.48 (37.6)  0.31 (7.9)  2.17 (55.1)  0.16 (4.1)\n78  1/2-13  32, 40  0.63 (16.0)  0.83 (21.1)  1.48 (37.6)  0.31 (7.9)  2.17 (55.1)  0.16 (4.1)\n78  M8  20, 25, 32, 40, 50, 63, 80  0.63 (16.0)  0.83 (21.1)  1.48 (37.6)  0.31 (7.9)  2.17 (55.1)  0.16 (4.1)\n78  M10  20, 25, 32, 40, 50, 63, 80  0.63 (16.0)  0.83 (21.1)  1.48 (37.6)  0.31 (7.9)  2.17 (55.1)  0.16 (4.1)\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- JW Winco: GN 303.2 adjustable levers with push button, threaded stud: l1, thread, l2, d2, d3, h1 to h4 (stroke) — web — Publisher's page; dimensions are facts — https://www.jwwinco.mx/en-us/products/2.1-Clamping-assembly-onoff-switching-via-levers/Adjustable-hand-levers-tension-levers/GN-303.2-Zinc-Die-Cast-Adjustable-Levers-Threaded-Stud-Type-with-Zinc-Plated-Steel-Components-with-Push-Button\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=push-button-clamping-levers-gn-303-2\n",
 "sources": [
  {
   "publisher": "JW Winco",
   "title": "GN 303.2 adjustable levers with push button, threaded stud: l1, thread, l2, d2, d3, h1 to h4 (stroke)",
   "url": "https://www.jwwinco.mx/en-us/products/2.1-Clamping-assembly-onoff-switching-via-levers/Adjustable-hand-levers-tension-levers/GN-303.2-Zinc-Die-Cast-Adjustable-Levers-Threaded-Stud-Type-with-Zinc-Plated-Steel-Components-with-Push-Button",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "adjustable-clamping-levers-gn-300",
  "cam-levers-gn-927",
  "star-knobs-din-6336",
  "fixed-handles-din-39",
  "indexing-plungers-gn-617"
 ],
 "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": [
  {
   "feature": "stud thread d1 × l2",
   "exact": "M4 to M10 and #10-32 to 1/2-13, stud 10 to 80 mm",
   "mates": "a tapped hole of the same thread; the stud is a plain cylinder at the nominal major diameter",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "What is the difference between GN 300 and GN 303.2?",
   "a": "Both are adjustable (ratchet) clamping levers with a threaded stud; GN 303.2 has a push button that releases the serrations instead of lifting the lever."
  },
  {
   "q": "What lever sizes does GN 303.2 come in?",
   "a": "30, 45, 63 and 78 mm (1.18 / 1.77 / 2.48 / 3.07 in), threads M4 to M10 and #10-32 to 1/2-13."
  },
  {
   "q": "What is the stroke of a GN 303.2 lever?",
   "a": "h4: .14 in (3.5 mm) on the 30 and 45 mm levers and .16 in (4 mm) on the 63 and 78 mm levers."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/push-button-clamping-levers-gn-303-2/index.md"
}