{
 "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": "heyco-strain-relief-bushings",
 "name": "Heyco strain relief bushings (SR series): mounting hole, to-prevent-rotation dimension, panel thickness, body length and cable range",
 "kind": "standard",
 "category": "Electronic components",
 "group": "Panel cutouts",
 "year": null,
 "question": "What panel hole does a Heyco strain relief bushing need, and what panel thickness and cable does it take?",
 "tags": [
  "strain relief",
  "strain relief bushing",
  "heyco",
  "cord grip",
  "cable bushing",
  "snap-in bushing",
  "panel hole",
  "cord range",
  "power cord",
  "SR series"
 ],
 "aliases": [
  "heyco strain relief hole size",
  "sr 5p-4 dimensions",
  "heyco 1137",
  "strain relief bushing panel hole",
  "1/2 inch strain relief bushing",
  "cord strain relief bushing sizes",
  "heyco sr 6n4-4",
  "snap in strain relief panel thickness",
  "heyco sr 5p3-4",
  "cord grip panel hole 9/16",
  "strain relief for 1/8 inch panel",
  "heyco strain relief cad"
 ],
 "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/heyco-strain-relief-bushings/",
 "sheet_txt": "https://xemstudio.com/objects/heyco-strain-relief-bushings/sheet.txt",
 "sheet": {
  "basis": "Heyco's flat-cable strain relief page (read in full), Heyco's round-cable sheet as hosted by Mouser (cross-checked against two distributor copies), and the sheet for the SR 5P3-4; numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Columns follow Heyco's sheets: A is the mounting hole diameter, B the 'to prevent rotation' dimension, 'finished fit panel thickness' (the thickest panel the groove is made for; the sheets say the part has additional clearance and custom thicknesses are available), C the body length, and the hole plug part number. Dimensions are inches with mm in brackets as printed. Material is nylon 6/6, rated −18 to 105 °C, standard colour black, per the flat-cable page.",
   "What B means: the sheets give the hole diameter and the 'to prevent rotation' figure but do not describe the hole as round or D-cut in the text read. For the SR 30-1 the sheet says to use an elongated mounting hole (the printed B of .730 in exceeds the .560 in A, as for the SR 33-1's .875 in vs .750 in), so B is shown as printed and not interpreted. No panel-hole shape is drawn.",
   "Cable range: the layout of the round-cable sheets is flattened in the copies read, so cable OD columns are partly unreadable (upper limits of SR 2M-1 and SR 5MN-3, the lower limit of others). Only cable entries on which the copies agree are shown; use Heyco's page for the full table. Rows left out: SR 5L-1 (1154), SR 30-1A / 30-1B (1487 / 1490), thin-panel parts (SR 4A-6, SR 3A-4 and the other .040 in panel sizes) and the many part numbers with no readable dimensions. For the SR 6P4-4 (1163) the sheet prints a panel thickness of .125 in but 2.5 mm; the inch value is shown and the sheet's own mismatch noted.",
   "Rubber grommets from the same maker are on rubber-grommets-panel-hole, and cable glands on cable-glands-pg-thread and cable-glands-metric-thread. No file: the bushing's outline is not published as numbers in a source read. Heyco publishes CAD for its parts on its site; linked, not copied."
  ],
  "table": {
   "columns": [
    "Heyco body no.",
    "type",
    "mounting hole A in (mm)",
    "to prevent rotation B in (mm)",
    "panel thickness in (mm)",
    "body length C in (mm)",
    "hole plug",
    "cable as printed"
   ],
   "rows": [
    [
     "1060",
     "SR 2M-1",
     ".375 (9.5)",
     ".330 (8.4)",
     ".062 (1.6)",
     ".406 (10.3)",
     "2617",
     "AWM 12/1; the upper limit of the cable OD is unreadable in the copies"
    ],
    [
     "1157",
     "SR 5MN-3",
     ".500 (12.7)",
     ".450 (11.4)",
     ".062 (1.6)",
     ".438 (11.1)",
     "2491",
     "SV & SVT 18/2: from .220 (5.6) up (upper limit unreadable in one copy; .245 / 6.2 in the other)"
    ],
    [
     "1140",
     "SR 5M-3",
     ".500 (12.7)",
     ".450 (11.4)",
     ".100 (2.5)",
     ".438 (11.1)",
     "2491",
     "as SR 5MN-3, different panel thickness"
    ],
    [
     "1150",
     "SR 5N-4",
     ".500 (12.7)",
     ".450 (11.4)",
     ".062 (1.6)",
     ".438 (11.1)",
     "2491",
     "HPD 18/2: .270 (6.9)"
    ],
    [
     "1147",
     "SR 5P-4",
     ".500 (12.7)",
     ".450 (11.4)",
     ".100 (2.5)",
     ".438 (11.1)",
     "2491",
     "as SR 5N-4, different panel thickness"
    ],
    [
     "1137",
     "SR 5P3-4",
     ".500 (12.7)",
     ".450 (11.4)",
     ".100 (2.5)",
     ".438 (11.1)",
     "2491",
     "SV & SVT 18/3: .255 – .270 (6.5 – 6.9) per the sheet for 1137 (that sheet's layout is garbled; confirm with Heyco)"
    ],
    [
     "1184",
     "SR 6W-1",
     ".500 (12.7)",
     ".465 (11.8)",
     ".090 (2.3)",
     ".438 (11.1)",
     "2491",
     "SJ, SJT, SJO 18/2 and SPT-3 16/2: .300 (7.6)"
    ],
    [
     "1170",
     "SR 5KN-4",
     ".562 (14.3)",
     ".530 (13.5)",
     ".062 (1.6)",
     ".609 (15.5)",
     "2494",
     "flat: SPT-3 18/2 .19 × .35 (4.8 × 8.9); SPT-3 16/2 .20 × .37 (5.1 × 9.4); SPT-2 18/3 .15 × .40; 16/3 .16 × .41"
    ],
    [
     "1174",
     "SR 5W-1",
     ".562 (14.3)",
     ".530 (13.5)",
     ".125 (3.2)",
     ".609 (15.5)",
     "2494",
     "flat: SPT-2 18/3 .15 × .40 (3.8 × 10.2); 16/3 .16 × .41 (4.1 × 10.4); HPN 16/2 .16 × .37 (4.1 × 9.4)"
    ],
    [
     "1167",
     "SR 5K-4",
     ".562 (14.3)",
     ".530 (13.5)",
     ".125 (3.2)",
     ".609 (15.5)",
     "2494",
     "flat: same cables as 1170"
    ],
    [
     "1160",
     "SR 6N4-4",
     ".625 (15.9)",
     ".550 (14.0)",
     ".062 (1.6)",
     ".578 (14.7)",
     "2497",
     "flat: SPT-2 18/3 and 16/3"
    ],
    [
     "1163",
     "SR 6P4-4",
     ".625 (15.9)",
     ".550 (14.0)",
     ".125 (3.2 (printed 2.5 mm: sheet disagrees with itself))",
     ".578 (14.7)",
     "2497",
     "flat: same cables as 1160"
    ],
    [
     "1504",
     "SR 33-1",
     ".750 (19.0)",
     ".875 (22.2)",
     ".125 (3.2)",
     ".781 (19.8)",
     "consult Heyco",
     "flat: SPT-3 16/2 to 14/3 (.20 × .37 to .24 × .51)"
    ],
    [
     "1517",
     "SR 34-2",
     ".875 (22.2)",
     ".840 (21.3)",
     ".125 (3.2)",
     ".813 (20.7)",
     "2509",
     "flat: SPT-3 14/2 to 12/3 (.24 × .42 to .29 × .65)"
    ],
    [
     "1497",
     "SR 31-2",
     ".875 (22.2)",
     ".835 (21.2)",
     ".125 (3.2)",
     ".812 (20.6)",
     "2509",
     "flat: SPT-3 12/3 (.32 × .65) and 10/3"
    ],
    [
     "1484",
     "SR 30-1",
     ".560 (14.2)",
     ".730 (18.5)",
     ".125 (3.2)",
     ".672 (17.1)",
     "consult Heyco",
     "flat: SPT-3 18/2 .19 × .35 to 16/3 .20 × .43; sheet says use the elongated mounting hole"
    ]
   ]
  }
 },
 "sheet_text": "Heyco strain relief bushings (SR series): mounting hole, to-prevent-rotation dimension, panel thickness, body length and cable range — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/heyco-strain-relief-bushings/  (sheet CC BY 4.0)\nBasis: Heyco's flat-cable strain relief page (read in full), Heyco's round-cable sheet as hosted by Mouser (cross-checked against two distributor copies), and the sheet for the SR 5P3-4; numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Columns follow Heyco's sheets: A is the mounting hole diameter, B the 'to prevent rotation' dimension, 'finished fit panel thickness' (the thickest panel the groove is made for; the sheets say the part has additional clearance and custom thicknesses are available), C the body length, and the hole plug part number. Dimensions are inches with mm in brackets as printed. Material is nylon 6/6, rated −18 to 105 °C, standard colour black, per the flat-cable page.\n- What B means: the sheets give the hole diameter and the 'to prevent rotation' figure but do not describe the hole as round or D-cut in the text read. For the SR 30-1 the sheet says to use an elongated mounting hole (the printed B of .730 in exceeds the .560 in A, as for the SR 33-1's .875 in vs .750 in), so B is shown as printed and not interpreted. No panel-hole shape is drawn.\n- Cable range: the layout of the round-cable sheets is flattened in the copies read, so cable OD columns are partly unreadable (upper limits of SR 2M-1 and SR 5MN-3, the lower limit of others). Only cable entries on which the copies agree are shown; use Heyco's page for the full table. Rows left out: SR 5L-1 (1154), SR 30-1A / 30-1B (1487 / 1490), thin-panel parts (SR 4A-6, SR 3A-4 and the other .040 in panel sizes) and the many part numbers with no readable dimensions. For the SR 6P4-4 (1163) the sheet prints a panel thickness of .125 in but 2.5 mm; the inch value is shown and the sheet's own mismatch noted.\n- Rubber grommets from the same maker are on rubber-grommets-panel-hole, and cable glands on cable-glands-pg-thread and cable-glands-metric-thread. No file: the bushing's outline is not published as numbers in a source read. Heyco publishes CAD for its parts on its site; linked, not copied.\n\nHeyco body no.  type  mounting hole A in (mm)  to prevent rotation B in (mm)  panel thickness in (mm)  body length C in (mm)  hole plug  cable as printed\n1060  SR 2M-1  .375 (9.5)  .330 (8.4)  .062 (1.6)  .406 (10.3)  2617  AWM 12/1; the upper limit of the cable OD is unreadable in the copies\n1157  SR 5MN-3  .500 (12.7)  .450 (11.4)  .062 (1.6)  .438 (11.1)  2491  SV & SVT 18/2: from .220 (5.6) up (upper limit unreadable in one copy; .245 / 6.2 in the other)\n1140  SR 5M-3  .500 (12.7)  .450 (11.4)  .100 (2.5)  .438 (11.1)  2491  as SR 5MN-3, different panel thickness\n1150  SR 5N-4  .500 (12.7)  .450 (11.4)  .062 (1.6)  .438 (11.1)  2491  HPD 18/2: .270 (6.9)\n1147  SR 5P-4  .500 (12.7)  .450 (11.4)  .100 (2.5)  .438 (11.1)  2491  as SR 5N-4, different panel thickness\n1137  SR 5P3-4  .500 (12.7)  .450 (11.4)  .100 (2.5)  .438 (11.1)  2491  SV & SVT 18/3: .255 – .270 (6.5 – 6.9) per the sheet for 1137 (that sheet's layout is garbled; confirm with Heyco)\n1184  SR 6W-1  .500 (12.7)  .465 (11.8)  .090 (2.3)  .438 (11.1)  2491  SJ, SJT, SJO 18/2 and SPT-3 16/2: .300 (7.6)\n1170  SR 5KN-4  .562 (14.3)  .530 (13.5)  .062 (1.6)  .609 (15.5)  2494  flat: SPT-3 18/2 .19 × .35 (4.8 × 8.9); SPT-3 16/2 .20 × .37 (5.1 × 9.4); SPT-2 18/3 .15 × .40; 16/3 .16 × .41\n1174  SR 5W-1  .562 (14.3)  .530 (13.5)  .125 (3.2)  .609 (15.5)  2494  flat: SPT-2 18/3 .15 × .40 (3.8 × 10.2); 16/3 .16 × .41 (4.1 × 10.4); HPN 16/2 .16 × .37 (4.1 × 9.4)\n1167  SR 5K-4  .562 (14.3)  .530 (13.5)  .125 (3.2)  .609 (15.5)  2494  flat: same cables as 1170\n1160  SR 6N4-4  .625 (15.9)  .550 (14.0)  .062 (1.6)  .578 (14.7)  2497  flat: SPT-2 18/3 and 16/3\n1163  SR 6P4-4  .625 (15.9)  .550 (14.0)  .125 (3.2 (printed 2.5 mm: sheet disagrees with itself))  .578 (14.7)  2497  flat: same cables as 1160\n1504  SR 33-1  .750 (19.0)  .875 (22.2)  .125 (3.2)  .781 (19.8)  consult Heyco  flat: SPT-3 16/2 to 14/3 (.20 × .37 to .24 × .51)\n1517  SR 34-2  .875 (22.2)  .840 (21.3)  .125 (3.2)  .813 (20.7)  2509  flat: SPT-3 14/2 to 12/3 (.24 × .42 to .29 × .65)\n1497  SR 31-2  .875 (22.2)  .835 (21.2)  .125 (3.2)  .812 (20.6)  2509  flat: SPT-3 12/3 (.32 × .65) and 10/3\n1484  SR 30-1  .560 (14.2)  .730 (18.5)  .125 (3.2)  .672 (17.1)  consult Heyco  flat: SPT-3 18/2 .19 × .35 to 16/3 .20 × .43; sheet says use the elongated mounting hole\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Heyco: Original strain relief bushings, straight-thru for flat cables, .560 / 14.2 mm to .875 / 22.2 mm mounting holes (maker's page; the maker also provides CAD) — web — Maker page; numbers only — https://www.heyco.com/products/strain-relief-bushings/original-strain-reliefs/heyco-original-strain-relief-bushings-straight-thru-for-flat-cables-560-142-mm-to-875-222-mm-mounting-holes\n- Heyco (datasheet hosted by Mouser): Original strain relief bushings, round cable, .375 to .500 in mounting holes — web — Maker datasheet; numbers only — https://www.mouser.com/datasheet/2/184/Original_Strain_Relief_Round_1-1133253.pdf\n- IEWC (distributor copy of the Heyco sheet for 1137): Heyco SR 5P3-4 (1137) spec sheet — web — Distributor copy of the maker sheet; numbers only — https://media.iewc.com/SpecificationSheets/1137.pdf\n- H. Weckhardt (copy of the Heyco round-cable sheet): Heyco Original strain relief bushings round cable (cross-check) — web — Distributor copy of the maker sheet; numbers only — https://www.hweckhardt.com/images/pdf/data/Heyco Original Strain Relief Bushings Round Cable.pdf\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=heyco-strain-relief-bushings\n",
 "sources": [
  {
   "publisher": "Heyco",
   "title": "Original strain relief bushings, straight-thru for flat cables, .560 / 14.2 mm to .875 / 22.2 mm mounting holes (maker's page; the maker also provides CAD)",
   "url": "https://www.heyco.com/products/strain-relief-bushings/original-strain-reliefs/heyco-original-strain-relief-bushings-straight-thru-for-flat-cables-560-142-mm-to-875-222-mm-mounting-holes",
   "formats": [
    "web"
   ],
   "license": "Maker page; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Heyco (datasheet hosted by Mouser)",
   "title": "Original strain relief bushings, round cable, .375 to .500 in mounting holes",
   "url": "https://www.mouser.com/datasheet/2/184/Original_Strain_Relief_Round_1-1133253.pdf",
   "formats": [
    "web"
   ],
   "license": "Maker datasheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "IEWC (distributor copy of the Heyco sheet for 1137)",
   "title": "Heyco SR 5P3-4 (1137) spec sheet",
   "url": "https://media.iewc.com/SpecificationSheets/1137.pdf",
   "formats": [
    "web"
   ],
   "license": "Distributor copy of the maker sheet; numbers only",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "H. Weckhardt (copy of the Heyco round-cable sheet)",
   "title": "Heyco Original strain relief bushings round cable (cross-check)",
   "url": "https://www.hweckhardt.com/images/pdf/data/Heyco Original Strain Relief Bushings Round Cable.pdf",
   "formats": [
    "web"
   ],
   "license": "Distributor copy of the maker sheet; numbers only",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "rubber-grommets-panel-hole",
  "cable-glands-pg-thread",
  "cable-glands-metric-thread",
  "cable-and-plug-sizes",
  "panel-cutouts",
  "rivet-nuts-flat-head"
 ],
 "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 hole does a Heyco SR 5P-4 strain relief need?",
   "a": "A 0.500 in (12.7 mm) mounting hole, 0.450 in (11.4 mm) 'to prevent rotation' dimension, for a panel up to 0.062 in (1.6 mm) thick; the SR 5P-4 (1147) in Heyco's table is the 0.100 in (2.5 mm) panel version of the SR 5N-4 (1150)."
  },
  {
   "q": "Is the hole round or D-shaped?",
   "a": "The Heyco sheets read give a hole diameter A and a 'to prevent rotation' dimension B and do not say D-cut in the text; Heyco's note for the SR 30 parts says use an elongated mounting hole. Check Heyco's drawing for the part."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/heyco-strain-relief-bushings/index.md"
}