# Rubber grommets: panel hole, panel thickness, ID, head diameter, height (Heyco inch, Essentra metric) + hole gauges > What panel hole does a rubber grommet need, and what are its inside and head diameters? - Category: Electronic components › Panel cutouts - Kind: Standard part - Basis: Heyco's three rubber-grommet tables (.063, .125-.188 and .250-.375 in panels), cross-checked against a distributor copy and a McMaster-Carr row, and four Essentra metric part pages. Files: three hole gauges with the published mounting-hole diameters - Page: https://xemstudio.com/objects/rubber-grommets-panel-hole/ · JSON: https://xemstudio.com/api/geometry?object=rubber-grommets-panel-hole · Plain text: https://xemstudio.com/objects/rubber-grommets-panel-hole/sheet.txt - License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license - Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/) ## Overall (mm) | length | width | height | |---|---|---| | 572.6 | 79.5 | 3.0 | **Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part. ## Notes - A rubber grommet is a bushing with a groove that seats in a round panel hole; the panel thickness it is made for is the groove width. Columns follow Heyco: panel thickness, mounting hole, ID (A, where the cable passes), head diameter (B, the flange) and overall height (C), each in inches / millimetres as printed. Heyco's standard colour is black and its thick-panel page says grommets are SBR unless noted (some parts are nitrile, neoprene, EPDM or PVC; the material column is not repeated here, so look it up by part number). - Panels up to .063 in (1.6 mm) are one Heyco page; .125 / .156 / .188 in panels are a second page that was cross-checked against a distributor's copy of the same table; .250 and .375 in panels are a third page. The distributor copy printed some cells shifted by a row, so for the second page only cells where both copies print the same figure are shown (a '—' means the copies disagree or one is blank), and 0 row(s) whose ID differed between the copies were dropped (none). The first and third pages have one source each; one row was checked against McMaster-Carr: a 9/16 in hole in a 1/16 in panel with a 7/16 in ID and 3/4 in flange, 1/4 in high, matches Heyco G1123 (.44 ID, .75 head, .25 high). - Left off the table: Heyco G1279 (made for a .257 in panel), the head and height cells that are blank on the Heyco page, and any part number outside these three tables. Hole size is the panel hole, not the grommet's OD: the groove of the grommet is a little larger than the cable and fits the hole, and the groove diameter is not printed on any page read. - Metric: Essentra prints hole diameter, panel thickness, inside diameter, overall diameter (which it does not call the flange) and overall height for each item: 498062 is 5.0 hole / 1.0 panel / 2.0 ID / 8.0 / 4.0; 498088 is 11.0 / 1.0 / 8.0 / 16.0 / 6.0; 498094 is 12.0 / 3.0 / 8.0 / 16.0 / 8.0; 498108 is 18.0 / 2.0 / 12.0 / 22.0 / 7.0. These four are the items read, not the catalogue. The Essentra 'guide' page has no table. A separate datasheet for item 498071 reads 8 mm hole and 2 mm maximum panel but prints no ID or height, so it is not used. Metric and inch parts overlap in size but are not interchangeable. - The gauges are plates with true-size holes at the published mounting-hole diameters (inch ×25.4); fit your panel hole to them before ordering. Plate size, 3 mm thickness, 8 mm spacing and 3 mm corner radius are Xem choices. McMaster-Carr sells many sizes with per-part STEP; this page links its 9/16 in grommet category and does not copy its files. ## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn) | feature | exact | mates with | fit | files | |---|---|---|---|---| | mounting hole | Heyco: Ø6.4 (.250 in) … Ø25.4 (1.000 in) by part, see table; panel .063 in (1.6) and thicker | panel hole seats the grommet groove | press | grommet-hole-gauge-* | ## Sizes | part no. | panel thickness (in / mm) | mounting hole (in / mm) | ID (in / mm) | head diameter (in / mm) | height (in / mm) | |---|---|---|---|---|---| | G1004 | 0.063 / 1.6 | .250 / 6.4 | .13 / 3.2 | .34 / 8.7 | .19 / 4.8 | | G1005 | 0.063 / 1.6 | .250 / 6.4 | .16 / 4.0 | .38 / 9.5 | — | | G1006 | 0.063 / 1.6 | .250 / 6.4 | .16 / 4.0 | .44 / 11.1 | .38 / 9.5 | | G1017 | 0.063 / 1.6 | .312 / 7.9 | .19 / 4.8 | .42 / 10.3 | .22 / 5.6 | | G1018 | 0.063 / 1.6 | .312 / 7.9 | .19 / 4.8 | .44 / 11.1 | .19 / 4.8 | | G1019 | 0.063 / 1.6 | .312 / 7.9 | .19 / 4.8 | .50 / 12.7 | .25 / 6.4 | | G1026 | 0.063 / 1.6 | .312 / 7.9 | .22 / 5.6 | .44 / 11.1 | .19 / 4.8 | | G1037 | 0.063 / 1.6 | .375 / 9.5 | .25 / 6.4 | .56 / 14.3 | .25 / 6.4 | | G1052 | 0.063 / 1.6 | .437 / 11.1 | .25 / 6.4 | .63 / 15.9 | .19 / 4.8 | | G1053 | 0.063 / 1.6 | .437 / 11.1 | .25 / 6.4 | .63 / 15.9 | .31 / 8.0 | | G1061 | 0.063 / 1.6 | .437 / 11.1 | .31 / 8.0 | .63 / 15.9 | .28 / 7.1 | | G1089 | 0.063 / 1.6 | .500 / 12.7 | .38 / 9.5 | .63 / 15.9 | .25 / 6.4 | | G1090 | 0.063 / 1.6 | .500 / 12.7 | .38 / 9.5 | .69 / 17.5 | .28 / 7.1 | | G1112 | 0.063 / 1.6 | .562 / 14.3 | .31 / 8.0 | .81 / 20.7 | .31 / 8.0 | | G1123 | 0.063 / 1.6 | .562 / 14.3 | .44 / 11.1 | .75 / 19.1 | .25 / 6.4 | | G1130 | 0.063 / 1.6 | .625 / 15.9 | .38 / 9.5 | .88 / 22.2 | .31 / 8.0 | | G1137 | 0.063 / 1.6 | .625 / 15.9 | .50 / 12.7 | .81 / 20.7 | .28 / 7.1 | | G1150 | 0.063 / 1.6 | .687 / 17.5 | .44 / 11.1 | .94 / 23.8 | .31 / 8.0 | | G1155 | 0.063 / 1.6 | .687 / 17.5 | .50 / 12.7 | .88 / 22.2 | .25 / 6.4 | | G1174 | 0.063 / 1.6 | .750 / 19.1 | .38 / 9.5 | 1.00 / 25.4 | .38 / 9.5 | | G1176 | 0.063 / 1.6 | .750 / 19.1 | .50 / 12.7 | .88 / 22.2 | .25 / 6.4 | | G1192 | 0.063 / 1.6 | .812 / 20.6 | .50 / 12.7 | 1.06 / 27.0 | .31 / 8.0 | | G1208 | 0.063 / 1.6 | .875 / 22.2 | .31 / 8.0 | 1.38 / 34.9 | .25 / 6.4 | | G1215 | 0.063 / 1.6 | .875 / 22.2 | .63 / 15.9 | 1.13 / 28.6 | .31 / 8.0 | | G1242 | 0.063 / 1.6 | 1.000 / 25.4 | .38 / 9.5 | 1.25 / 31.8 | .25 / 6.4 | | G1252 | 0.063 / 1.6 | 1.000 / 25.4 | .69 / 17.5 | 1.31 / 33.4 | .38 / 9.5 | | G1258 | 0.063 / 1.6 | 1.000 / 25.4 | .75 / 19.1 | 1.25 / 31.8 | .30 / 7.5 | | G1269 | 0.063 / 1.6 | 1.062 / 27.0 | .75 / 19.1 | 1.38 / 34.9 | .38 / 9.5 | | G1290 | 0.063 / 1.6 | 1.250 / 31.8 | .50 / 12.7 | 1.50 / 38.1 | .25 / 6.4 | | G1303 | 0.063 / 1.6 | 1.250 / 31.8 | .88 / 22.2 | 1.63 / 41.3 | .44 / 11.1 | | G1311 | 0.063 / 1.6 | 1.250 / 31.8 | 1.00 / 25.4 | 1.56 / 39.7 | .31 / 8.0 | | G1320 | 0.063 / 1.6 | 1.375 / 34.9 | 1.00 / 25.4 | 1.75 / 44.5 | .44 / 11.1 | | G1347 | 0.063 / 1.6 | 1.500 / 38.1 | 1.13 / 28.6 | 1.88 / 47.6 | .38 / 9.5 | | G1349 | 0.063 / 1.6 | 1.500 / 38.1 | 1.25 / 31.8 | 1.88 / 47.6 | .34 / 8.7 | | G1322 | .125 / 3.2 | 1.375 / 34.9 | 1.00 / 25.4 | 1.75 / 44.5 | .50 / 12.7 | | G1350 | .125 / 3.2 | 1.500 / 38.1 | 1.25 / 31.8 | 1.88 / 47.6 | .41 / 10.3 | | G1363 | .125 / 3.2 | 1.625 / 41.3 | 1.31 / 33.4 | 2.00 / 50.8 | .44 / 11.1 | | G1364 | .125 / 3.2 | 1.625 / 41.3 | 1.38 / 34.9 | 1.88 / 47.6 | .41 / 10.3 | | G1371 | .125 / 3.2 | 1.750 / 44.5 | 1.50 / 38.1 | 2.13 / 54.0 | .50 / 12.7 | | G1392 | .125 / 3.2 | 2.000 / 50.8 | 1.75 / 44.5 | 2.38 / 60.3 | .38 / 9.5 | | G1423 | .125 / 3.2 | 2.500 / 63.5 | 2.13 / 54.0 | 2.88 / 73.0 | .44 / 11.1 | | G1094 | .156 / 4.0 | .500 / 12.7 | .38 / 9.5 | .69 / 17.5 | .31 / 8.0 | | G1181 | .156 / 4.0 | .750 / 19.1 | .50 / 12.7 | .94 / 23.8 | — | | G1348 | .156 / 4.0 | 1.500 / 38.1 | 1.19 / 30.2 | 1.75 / 44.5 | — | | G1022 | .188 / 4.8 | .312 / 7.9 | .19 / 4.8 | .44 / 11.8 | .31 / 8.0 | | G1034 | .188 / 4.8 | .375 / 9.5 | .19 / 4.8 | .63 / 15.9 | .38 / 9.5 | | G1057 | .188 / 4.8 | .437 / 11.1 | .25 / 6.4 | .63 / 15.9 | .31 / 8.0 | | G1110 | .188 / 4.8 | .562 / 14.3 | .19 / 4.8 | .75 / 19.1 | .31 / 8.0 | | G1115 | .188 / 4.8 | .562 / 14.3 | .31 / 8.0 | .81 / 20.7 | .38 / 9.5 | | G1116 | .188 / 4.8 | .562 / 14.3 | .31 / 8.0 | .81 / 20.7 | .44 / 11.1 | | G1120 | .188 / 4.8 | .562 / 14.3 | .38 / 9.5 | .81 / 20.7 | .38 / 9.5 | | G1133 | .188 / 4.8 | .625 / 15.9 | .38 / 9.5 | .88 / 22.2 | — | | G1135 | .188 / 4.8 | .625 / 15.9 | .40 / 10.2 | 1.10 / 27.9 | — | | G1153 | .188 / 4.8 | .687 / 17.5 | .44 / 11.1 | .94 / 23.8 | — | | G1172 | .188 / 4.8 | .750 / 19.1 | .31 / 8.0 | 1.00 / 25.4 | — | | G1194 | .188 / 4.8 | .812 / 20.6 | .50 / 12.7 | — | — | | G1199 | .188 / 4.8 | .812 / 20.6 | .56 / 14.3 | — | — | | G1213 | .188 / 4.8 | .875 / 22.2 | .56 / 14.3 | 1.06 / 27.0 | — | | G1219 | .188 / 4.8 | .875 / 22.2 | .63 / 15.9 | 1.13 / 28.6 | — | | G1256 | .188 / 4.8 | 1.000 / 25.4 | .69 / 17.5 | 1.31 / 33.4 | .50 / 12.7 | | G1261 | .188 / 4.8 | 1.000 / 25.4 | .75 / 19.1 | 1.25 / 31.8 | .56 / 14.3 | | G1272 | .188 / 4.8 | 1.062 / 27.0 | .75 / 19.1 | 1.38 / 34.9 | .50 / 12.7 | | G1306 | .188 / 4.8 | 1.250 / 31.8 | .88 / 22.2 | 1.63 / 41.3 | .56 / 14.3 | | G1312 | .188 / 4.8 | 1.250 / 31.8 | 1.00 / 25.4 | 1.50 / 38.1 | .44 / 11.1 | | G1323 | .188 / 4.8 | 1.375 / 34.9 | 1.00 / 25.4 | 1.75 / 44.5 | .56 / 14.3 | | G1329 | .188 / 4.8 | 1.375 / 34.9 | 1.13 / 28.6 | 1.88 / 47.6 | .50 / 12.7 | | G1351 | .188 / 4.8 | 1.500 / 38.1 | 1.25 / 31.8 | 2.00 / 50.8 | .63 / 15.9 | | G1372 | .188 / 4.8 | 1.750 / 44.5 | 1.50 / 38.1 | 2.13 / 54.0 | .56 / 14.3 | | G1390 | .188 / 4.8 | 2.000 / 50.8 | 1.63 / 41.3 | 2.25 / 57.2 | .75 / 19.1 | | G1404 | .188 / 4.8 | 2.200 / 55.9 | 2.00 / 50.8 | 2.75 / 69.9 | .56 / 14.2 | | G1414 | .188 / 4.8 | 2.375 / 60.3 | 2.00 / 50.8 | 2.75 / 69.9 | — | | G1023 | .250 / 6.4 | .312 / 7.9 | .19 / 4.8 | .44 / 11.1 | .38 / 9.5 | | G1058 | .250 / 6.4 | .437 / 11.1 | .25 / 6.4 | .63 / 15.9 | — | | G1086 | .250 / 6.4 | .500 / 12.7 | .31 / 8.0 | .63 / 15.9 | .63 / 15.9 | | G1095 | .250 / 6.4 | .500 / 12.7 | .38 / 9.5 | .75 / 19.1 | .50 / 12.7 | | G1117 | .250 / 6.4 | .562 / 14.3 | .31 / 8.0 | .81 / 20.6 | .50 / 12.7 | | G1134 | .250 / 6.4 | .625 / 15.9 | .38 / 9.5 | .88 / 22.2 | — | | G1154 | .250 / 6.4 | .687 / 17.5 | .44 / 11.1 | .94 / 23.8 | — | | G1195 | .250 / 6.4 | .812 / 20.6 | .50 / 12.7 | 1.06 / 27.0 | — | | G1220 | .250 / 6.4 | .875 / 22.2 | .63 / 15.9 | 1.13 / 28.6 | — | | G1257 | .250 / 6.4 | 1.000 / 25.4 | .69 / 17.5 | 1.31 / 33.3 | .56 / 14.3 | | G1264 | .250 / 6.4 | 1.000 / 25.4 | .88 / 22.2 | 1.25 / 31.8 | .63 / 15.9 | | G1273 | .250 / 6.4 | 1.062 / 27.0 | .75 / 19.1 | 1.38 / 34.9 | .56 / 14.3 | | G1301 | .250 / 6.4 | 1.250 / 31.8 | .75 / 19.1 | 1.63 / 41.3 | .44 / 11.1 | | G1307 | .250 / 6.4 | 1.250 / 31.8 | .88 / 22.2 | 1.63 / 41.3 | .63 / 15.9 | | G1324 | .250 / 6.4 | 1.375 / 34.9 | 1.00 / 25.4 | 1.75 / 44.5 | .63 / 15.9 | | G1353 | .250 / 6.4 | 1.500 / 38.1 | 1.25 / 31.8 | 1.75 / 44.5 | .50 / 12.7 | | G1354 | .250 / 6.4 | 1.500 / 38.1 | 1.25 / 31.8 | 2.00 / 50.8 | .52 / 13.1 | | G1373 | .250 / 6.4 | 1.750 / 44.5 | 1.50 / 38.1 | 2.00 / 50.8 | .50 / 12.7 | | G1374 | .250 / 6.4 | 1.750 / 44.5 | 1.50 / 38.1 | 2.13 / 54.0 | .63 / 15.9 | | G1393 | .250 / 6.4 | 2.000 / 50.8 | 1.75 / 44.5 | 2.50 / 63.5 | .53 / 13.5 | | G1394 | .250 / 6.4 | 2.000 / 50.8 | 1.75 / 44.5 | 2.50 / 63.5 | .56 / 14.2 | | G1421 | .250 / 6.4 | 2.500 / 63.5 | 2.00 / 50.8 | 3.00 / 76.2 | .56 / 14.3 | | G1425 | .250 / 6.4 | 2.500 / 63.5 | 2.25 / 57.2 | 3.00 / 76.2 | .63 / 15.9 | | G1043 | .375 / 9.5 | .375 / 9.5 | .31 / 8.0 | .56 / 14.3 | .50 / 12.7 | | G1096 | .375 / 9.5 | .500 / 12.7 | .38 / 9.5 | .63 / 15.9 | .63 / 15.9 | | G1121 | .375 / 9.5 | .562 / 14.3 | .38 / 9.5 | .75 / 19.1 | .75 / 19.1 | | G1136 | .375 / 9.5 | .625 / 15.9 | .41 / 10.3 | .81 / 20.6 | .63 / 15.9 | | G1182 | .375 / 9.5 | .750 / 19.1 | .50 / 12.7 | 1.00 / 25.4 | — | | G1214 | .375 / 9.5 | .875 / 22.2 | .56 / 14.3 | 1.06 / 27.0 | — | | G1232 | .375 / 9.5 | .968 / 24.6 | .69 / 17.4 | 1.31 / 33.3 | — | | G1249 | .375 / 9.5 | 1.000 / 25.4 | .56 / 14.3 | 1.25 / 31.8 | — | | G1278 | .375 / 9.5 | 1.125 / 28.6 | .75 / 19.1 | 1.63 / 41.3 | 1.13 / 28.6 | | G1314 | .375 / 9.5 | 1.250 / 31.8 | 1.00 / 25.4 | 1.50 / 38.1 | .63 / 15.9 | | G1326 | .375 / 9.5 | 1.375 / 34.9 | 1.00 / 25.4 | 1.75 / 44.5 | .75 / 19.1 | | G1375 | .375 / 9.5 | 1.750 / 44.5 | 1.50 / 38.1 | 2.13 / 54.0 | — | | G1395 | .375 / 9.5 | 2.000 / 50.8 | 1.75 / 44.5 | 2.50 / 63.5 | .63 / 15.9 | | G1427 | .375 / 9.5 | 2.500 / 63.5 | 2.25 / 57.2 | 3.00 / 76.2 | .75 / 19.1 | | Essentra 498062 (EPDM) | 1.0 mm | Ø5.0 mm | 2.0 mm | 8.0 mm | 4.0 mm | | Essentra 498088 (EPDM) | 1.0 mm | Ø11.0 mm | 8.0 mm | 16.0 mm | 6.0 mm | | Essentra 498094 (EPDM) | 3.0 mm | Ø12.0 mm | 8.0 mm | 16.0 mm | 8.0 mm | | Essentra 498108 (EPDM) | 2.0 mm | Ø18.0 mm | 12.0 mm | 22.0 mm | 7.0 mm | ## Where the files are - Heyco: [Rubber grommets for panels up to .063 in (1.6 mm) thick: mounting hole, ID (A), head diameter (B), height (C)](https://www.heyco.com/products/bushings-grommets-heycaps-plugs/tubing-caps-and-plugs/heyco-rubber-grommets-for-panels-up-to-063-16-mm-thick) — web — Maker table; numbers only - Heyco: [Rubber grommets for .125 in (3.2 mm) to .188 in (4.8 mm) panels: mounting hole, ID, head diameter, height](https://www.heyco.com/products/bushings-grommets-heycaps-plugs/tubing-caps-and-plugs/heyco-rubber-grommets-125-32-mm-to-188-48-mm-panel-thickness) — web — Maker table; numbers only - Heyco: [Thick panel rubber grommets, .250 in (6.4 mm) and .375 in (9.5 mm) panels: mounting hole, ID, head diameter, height](https://www.heyco.com/products/bushings-grommets-heycaps-plugs/tubing-caps-and-plugs/heyco-thick-panel-rubber-grommets) — web — Maker table; numbers only - IEWC (distributor copy of the Heyco table): [Heyco rubber grommets, .125 to .188 in panels (used only to check the Heyco page)](https://media.iewc.com/SpecificationSheets/1115.pdf) — web — Distributor sheet; numbers only - Essentra Components: [Standard open grommets 498062, 498088, 498094, 498108 (EPDM): hole diameter, panel thickness, overall diameter, inside diameter, overall height](https://www.essentracomponents.com/en-au/p/open-grommets-quick-fit-grommets/498062) — web — Maker pages; numbers only - McMaster-Carr: [Grommets (9/16 in hole page) (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/grommets/hole-diameter~9-16/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link) ## Free STEP/STL (3 parts, CC BY 4.0, Xem Studio) Index: https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/index.json - grommet-hole-gauge-inch-1-4-to-1: [STEP](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-inch-1-4-to-1.step) · [STL](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-inch-1-4-to-1.stl) — hole gauge plate, 286.5 × 41.4 × 3 mm, twelve holes at the Heyco grommet mounting-hole diameters .250, .312, .375, .437, .500, .562, .625, .687, .750, .812, .875, 1.000 in, smallest first, 8 mm between hole edges; plate size and spacing are Xem choices - grommet-hole-gauge-inch-1-1-16-to-2-1-2: [STEP](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-inch-1-1-16-to-2-1-2.step) · [STL](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-inch-1-1-16-to-2-1-2.stl) — hole gauge plate, 572.6 × 79.5 × 3 mm, eleven holes at 1.062, 1.125, 1.250, 1.375, 1.500, 1.625, 1.750, 2.000, 2.200, 2.375, 2.500 in (Heyco mounting holes), smallest first, 8 mm between hole edges; plate size and spacing are Xem choices - grommet-hole-gauge-metric-essentra: [STEP](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-metric-essentra.step) · [STL](https://xemstudio.com/files/hardware/rubber-grommets-panel-hole/grommet-hole-gauge-metric-essentra.stl) — hole gauge plate, 86.0 × 34.0 × 3 mm, four holes Ø5, Ø11, Ø12, Ø18 mm (the Essentra 498062, 498088, 498094, 498108 hole diameters), smallest first, 8 mm between hole edges; plate size and spacing are Xem choices ## Questions **What panel hole does a Heyco RG 500-12-2 grommet need?** .500 in (12.7 mm) in a .063 in (1.6 mm) panel, ID .38 in, head .63 in (G1089). **What hole does an Essentra 498094 grommet need?** 12.0 mm hole in a 3.0 mm panel, ID 8.0 mm, overall diameter 16.0 mm, 8.0 mm high. **What is a grommet's panel thickness?** The thickness the groove is made for, in the table's panel thickness column; use the row for your sheet. ## Fits with - [Metric cable glands M12–M63: thread, panel hole (EN 60423), cable range, height, key size + hole gauge](https://xemstudio.com/objects/cable-glands-metric-thread/) - [PG cable glands: thread and panel hole PG7–PG48 (DIN 40430), height, wrench flat, cable range + hole gauge](https://xemstudio.com/objects/cable-glands-pg-thread/) - [Standard cable and plug sizes: USB-C, USB-A, Micro-B, Lightning, HDMI, RJ45, DC barrel, cable and power-cord diameters](https://xemstudio.com/objects/cable-and-plug-sizes/) - [Panel cutouts: IEC inlet, rockers, barrel jack, USB-C, HDMI, LEDs, Neutrik D](https://xemstudio.com/objects/panel-cutouts/) - [Rivet nuts (blind threaded inserts), flat head: hole size, grip range, body and flange dimensions, M3–M12 and #6-32 to 3/8-16](https://xemstudio.com/objects/rivet-nuts-flat-head/)