{"id":16748,"date":"2026-04-21T10:27:55","date_gmt":"2026-04-21T15:27:55","guid":{"rendered":"https:\/\/blog.misumiusa.com\/?page_id=16748"},"modified":"2026-04-24T22:01:22","modified_gmt":"2026-04-25T03:01:22","slug":"helicoil-tap-and-drill-size-chart","status":"publish","type":"page","link":"https:\/\/blog.misumiusa.com\/helicoil-tap-and-drill-size-chart\/","title":{"rendered":"Helicoil Tap and Drill Size Chart"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">These charts are intended to serve as a practical reference for common Helicoil sizes. Whether the goal is thread repair, improving thread strength in softer materials, or preparing a new hole for repeated assembly, the correct helical insert dimensions help ensure the insert installs cleanly and the finished thread performs as expected.<\/p>\n\n\n\n<div class=\"misumi-helicoil-chart\">\n  <style>\n    .misumi-helicoil-chart{\n      --misumi-blue:#005BAC;\n      --misumi-yellow:#FFD100;\n      --misumi-black:#111111;\n      --misumi-white:#FFFFFF;\n      --misumi-gray:#f4f4f4;\n      --misumi-border:#cfcfcf;\n      margin:24px 0;\n      font-family:Arial, Helvetica, sans-serif;\n      color:var(--misumi-black);\n      width:100%;\n    }\n\n    .misumi-helicoil-chart *{\n      box-sizing:border-box;\n    }\n\n    .misumi-helicoil-chart .mhc-table-wrap{\n      width:100%;\n      margin:0 0 28px 0;\n      border:2px solid var(--misumi-blue);\n      background:var(--misumi-white);\n      overflow:visible;\n    }\n\n    .misumi-helicoil-chart table{\n      width:100%;\n      border-collapse:collapse;\n      table-layout:fixed;\n      font-size:10px;\n      line-height:1.2;\n    }\n\n    .misumi-helicoil-chart col.mhc-col-thread{width:12%;}\n    .misumi-helicoil-chart col.mhc-col-small{width:5.25%;}\n    .misumi-helicoil-chart col.mhc-col-medium{width:5.75%;}\n    .misumi-helicoil-chart col.mhc-col-drill{width:7%;}\n    .misumi-helicoil-chart col.mhc-col-pitch{width:5.5%;}\n    .misumi-helicoil-chart col.mhc-col-tap{width:6%;}\n\n    .misumi-helicoil-chart th,\n    .misumi-helicoil-chart td{\n      border:1px solid var(--misumi-border);\n      padding:7px 4px;\n      text-align:center;\n      vertical-align:middle;\n    }\n\n    .misumi-helicoil-chart thead th{\n      background:var(--misumi-blue);\n      color:var(--misumi-white);\n      font-weight:700;\n      font-size:9.5px;\n      line-height:1.2;\n      white-space:normal;\n      word-break:normal;\n      overflow-wrap:break-word;\n    }\n\n    .misumi-helicoil-chart thead th.mhc-sub{\n      background:var(--misumi-yellow);\n      color:var(--misumi-black);\n    }\n\n    .misumi-helicoil-chart tbody td{\n      white-space:nowrap;\n      word-break:normal;\n      overflow-wrap:normal;\n    }\n\n    .misumi-helicoil-chart tbody tr:nth-child(even){\n      background:var(--misumi-gray);\n    }\n\n    .misumi-helicoil-chart tbody tr:hover{\n      background:var(--misumi-yellow);\n      transition:background-color .2s ease;\n    }\n\n    .misumi-helicoil-chart td:first-child,\n    .misumi-helicoil-chart th:first-child{\n      text-align:left;\n      padding-left:8px;\n    }\n\n    .misumi-helicoil-chart thead th:first-child{\n      white-space:normal;\n      word-break:break-word;\n      overflow-wrap:anywhere;\n    }\n\n    .misumi-helicoil-chart tbody td:first-child{\n      white-space:normal;\n      word-break:break-word;\n      overflow-wrap:anywhere;\n    }\n\n    .misumi-helicoil-chart .mhc-section-row td{\n      background:var(--misumi-black);\n      color:var(--misumi-white);\n      font-weight:700;\n      text-align:center;\n      font-size:12px;\n      letter-spacing:.2px;\n      padding:8px 6px;\n      white-space:normal;\n    }\n\n    @media (max-width: 1200px){\n      .misumi-helicoil-chart table{\n        font-size:9.5px;\n      }\n\n      .misumi-helicoil-chart thead th{\n        font-size:9px;\n      }\n\n      .misumi-helicoil-chart th,\n      .misumi-helicoil-chart td{\n        padding:6px 3px;\n      }\n    }\n  <\/style>\n\n  <div class=\"mhc-table-wrap\">\n    <table>\n      <colgroup>\n        <col class=\"mhc-col-thread\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-tap\">\n        <col class=\"mhc-col-pitch\">\n        <col class=\"mhc-col-drill\">\n      <\/colgroup>\n      <thead>\n        <tr>\n          <th rowspan=\"3\">Thread Size<\/th>\n          <th colspan=\"2\">Countersink \u201cM\u201d Diameter<br>(120\u00b0\u201345\u00b0 Included Angle)<\/th>\n          <th colspan=\"3\">Pitch Diameter<\/th>\n          <th colspan=\"5\">\u201cH\u201d Minimum Tapping Depth by Insert Length<\/th>\n          <th rowspan=\"3\">Tap Major Diameter Max.<\/th>\n          <th rowspan=\"3\">Thread Pitch \u201cP\u201d<\/th>\n          <th rowspan=\"3\">Drill Size<\/th>\n        <\/tr>\n        <tr>\n          <th rowspan=\"2\" class=\"mhc-sub\">Min.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">Max.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">Min.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">3B Max.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">2B Max.<\/th>\n          <th colspan=\"5\" class=\"mhc-sub\">Insert Length<\/th>\n        <\/tr>\n        <tr>\n          <th class=\"mhc-sub\">1D<\/th>\n          <th class=\"mhc-sub\">1.5D<\/th>\n          <th class=\"mhc-sub\">2D<\/th>\n          <th class=\"mhc-sub\">2.5D<\/th>\n          <th class=\"mhc-sub\">3D<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr class=\"mhc-section-row\"><td colspan=\"15\">Unified Coarse Thread (UNC)<\/td><\/tr>\n        <tr><td>1 (.073)-64<\/td><td>.085<\/td><td>.10<\/td><td>.0832<\/td><td>.0843<\/td><td>.0850<\/td><td>.090<\/td><td>.125<\/td><td>.160<\/td><td>.200<\/td><td>.225<\/td><td>.0958<\/td><td>.01563<\/td><td>#53<\/td><\/tr>\n        <tr><td>2 (.086)-56<\/td><td>.09<\/td><td>.11<\/td><td>.0976<\/td><td>.0989<\/td><td>.0996<\/td><td>.100<\/td><td>.150<\/td><td>.190<\/td><td>.230<\/td><td>.280<\/td><td>.1117<\/td><td>.01786<\/td><td>3\/32<\/td><\/tr>\n        <tr><td>3 (.099)-48<\/td><td>.11<\/td><td>.14<\/td><td>.1126<\/td><td>.1140<\/td><td>.1148<\/td><td>.120<\/td><td>.170<\/td><td>.220<\/td><td>.270<\/td><td>.320<\/td><td>.1289<\/td><td>.02083<\/td><td>#36<\/td><\/tr>\n        <tr><td>4 (.112)-40<\/td><td>.14<\/td><td>.17<\/td><td>.1283<\/td><td>.1299<\/td><td>.1308<\/td><td>.140<\/td><td>.190<\/td><td>.250<\/td><td>.310<\/td><td>.360<\/td><td>.1473<\/td><td>.02500<\/td><td>#31<\/td><\/tr>\n        <tr><td>5 (.125)-40<\/td><td>.16<\/td><td>.19<\/td><td>.1413<\/td><td>.1430<\/td><td>.1438<\/td><td>.150<\/td><td>.210<\/td><td>.280<\/td><td>.340<\/td><td>.400<\/td><td>.1603<\/td><td>.02500<\/td><td>#29<\/td><\/tr>\n        <tr><td>6 (.138)-32<\/td><td>.18<\/td><td>.21<\/td><td>.1583<\/td><td>.1601<\/td><td>.1611<\/td><td>.170<\/td><td>.240<\/td><td>.310<\/td><td>.380<\/td><td>.450<\/td><td>.1817<\/td><td>.03125<\/td><td>#25<\/td><\/tr>\n        <tr><td>8 (.164)-32<\/td><td>.20<\/td><td>.23<\/td><td>.1843<\/td><td>.1862<\/td><td>.1872<\/td><td>.200<\/td><td>.280<\/td><td>.360<\/td><td>.440<\/td><td>.520<\/td><td>.2077<\/td><td>.03125<\/td><td>11\/64<\/td><\/tr>\n        <tr><td>10 (.190)-24<\/td><td>.24<\/td><td>.27<\/td><td>.2170<\/td><td>.2192<\/td><td>.2203<\/td><td>.230<\/td><td>.330<\/td><td>.420<\/td><td>.520<\/td><td>.610<\/td><td>.2475<\/td><td>.04167<\/td><td>13\/64<\/td><\/tr>\n        <tr><td>12 (.216)-24<\/td><td>.26<\/td><td>.29<\/td><td>.2430<\/td><td>.2453<\/td><td>.2464<\/td><td>.260<\/td><td>.370<\/td><td>.470<\/td><td>.580<\/td><td>.690<\/td><td>.2735<\/td><td>.04167<\/td><td>15\/64<\/td><\/tr>\n        <tr><td>1\/4 (.2500)-20<\/td><td>.31<\/td><td>.34<\/td><td>.2825<\/td><td>.2851<\/td><td>.2864<\/td><td>.300<\/td><td>.430<\/td><td>.550<\/td><td>.680<\/td><td>.800<\/td><td>.3187<\/td><td>.05000<\/td><td>17\/64<\/td><\/tr>\n        <tr><td>5\/16 (.3125)-18<\/td><td>.38<\/td><td>.41<\/td><td>.3486<\/td><td>.3515<\/td><td>.3529<\/td><td>.370<\/td><td>.530<\/td><td>.680<\/td><td>.840<\/td><td>.990<\/td><td>.3884<\/td><td>.05556<\/td><td>21\/64<\/td><\/tr>\n        <tr><td>3\/8 (.3750)-16<\/td><td>.45<\/td><td>.48<\/td><td>.4156<\/td><td>.4189<\/td><td>.4203<\/td><td>.440<\/td><td>.630<\/td><td>.810<\/td><td>1.000<\/td><td>1.190<\/td><td>.4602<\/td><td>.06250<\/td><td>25\/64<\/td><\/tr>\n        <tr><td>7\/16 (.4375)-14<\/td><td>.52<\/td><td>.55<\/td><td>.4839<\/td><td>.4875<\/td><td>.4890<\/td><td>.510<\/td><td>.730<\/td><td>.950<\/td><td>1.170<\/td><td>1.380<\/td><td>.5343<\/td><td>.07143<\/td><td>29\/64<\/td><\/tr>\n        <tr><td>1\/2 (.5000)-13<\/td><td>.59<\/td><td>.62<\/td><td>.5499<\/td><td>.5537<\/td><td>.5554<\/td><td>.580<\/td><td>.830<\/td><td>1.080<\/td><td>1.330<\/td><td>1.580<\/td><td>.6042<\/td><td>.07692<\/td><td>33\/64<\/td><\/tr>\n        <tr><td>9\/16 (.5625)-12<\/td><td>.66<\/td><td>.69<\/td><td>.6167<\/td><td>.6208<\/td><td>.6225<\/td><td>.650<\/td><td>.930<\/td><td>1.210<\/td><td>1.490<\/td><td>1.770<\/td><td>.6751<\/td><td>.08333<\/td><td>37\/64<\/td><\/tr>\n        <tr><td>5\/8 (.6250)-11<\/td><td>.73<\/td><td>.76<\/td><td>.6841<\/td><td>.6885<\/td><td>.6903<\/td><td>.720<\/td><td>1.030<\/td><td>1.340<\/td><td>1.650<\/td><td>1.970<\/td><td>.7477<\/td><td>.09091<\/td><td>21\/32<\/td><\/tr>\n        <tr><td>3\/4 (.7500)-10<\/td><td>.87<\/td><td>.90<\/td><td>.8149<\/td><td>.8196<\/td><td>.8216<\/td><td>.850<\/td><td>1.230<\/td><td>1.600<\/td><td>1.980<\/td><td>2.350<\/td><td>.8850<\/td><td>.10000<\/td><td>25\/32<\/td><\/tr>\n        <tr><td>7\/8 (.8750)-9<\/td><td>1.00<\/td><td>1.03<\/td><td>.9471<\/td><td>.9522<\/td><td>.9543<\/td><td>.990<\/td><td>1.420<\/td><td>1.860<\/td><td>2.300<\/td><td>2.740<\/td><td>1.0247<\/td><td>.11111<\/td><td>57\/64<\/td><\/tr>\n        <tr><td>1 (1.000)-8<\/td><td>1.14<\/td><td>1.17<\/td><td>1.0812<\/td><td>1.0868<\/td><td>1.0890<\/td><td>1.130<\/td><td>1.630<\/td><td>2.130<\/td><td>2.630<\/td><td>3.130<\/td><td>1.1681<\/td><td>.12500<\/td><td>1-1\/32<\/td><\/tr>\n        <tr><td>1-1\/8 (1.1250)-7<\/td><td>1.29<\/td><td>1.32<\/td><td>1.2178<\/td><td>1.2239<\/td><td>1.2262<\/td><td>1.270<\/td><td>1.830<\/td><td>2.390<\/td><td>2.960<\/td><td>3.520<\/td><td>1.3171<\/td><td>.14286<\/td><td>1-5\/32<\/td><\/tr>\n        <tr><td>1-1\/4 (1.2500)-7<\/td><td>1.41<\/td><td>1.44<\/td><td>1.3428<\/td><td>1.3490<\/td><td>1.3514<\/td><td>1.390<\/td><td>2.020<\/td><td>2.640<\/td><td>3.270<\/td><td>3.890<\/td><td>1.4421<\/td><td>.14286<\/td><td>1-9\/32<\/td><\/tr>\n        <tr><td>1-3\/8 (1.3750)-6<\/td><td>1.56<\/td><td>1.59<\/td><td>1.4832<\/td><td>1.4900<\/td><td>1.4926<\/td><td>1.540<\/td><td>2.230<\/td><td>2.920<\/td><td>3.600<\/td><td>4.290<\/td><td>1.5982<\/td><td>.16667<\/td><td>1-13\/32<\/td><\/tr>\n        <tr><td>1-1\/2 (1.5000)-6<\/td><td>1.69<\/td><td>1.72<\/td><td>1.6082<\/td><td>1.6151<\/td><td>1.6177<\/td><td>1.670<\/td><td>2.420<\/td><td>3.170<\/td><td>3.920<\/td><td>4.670<\/td><td>1.7232<\/td><td>.16667<\/td><td>1-17\/32<\/td><\/tr>\n        <tr><td>1-3\/4 (1.7500)-5<\/td><td>1.94<\/td><td>1.97<\/td><td>1.8587<\/td><td>1.8660<\/td><td>1.8687<\/td><td>1.920<\/td><td>2.790<\/td><td>3.650<\/td><td>4.520<\/td><td>5.380<\/td><td>1.9922<\/td><td>.20000<\/td><td>1-13\/16<\/td><\/tr>\n        <tr><td>2 (2.0000)-4.5<\/td><td>2.19<\/td><td>2.22<\/td><td>2.1115<\/td><td>2.1191<\/td><td>2.1219<\/td><td>2.170<\/td><td>3.160<\/td><td>4.140<\/td><td>5.120<\/td><td>6.100<\/td><td>2.2611<\/td><td>.22222<\/td><td>2-1\/16<\/td><\/tr>\n\n        <tr class=\"mhc-section-row\"><td colspan=\"15\">Unified Fine Thread (UNF)<\/td><\/tr>\n        <tr><td>2 (.086)-64<\/td><td>.09<\/td><td>.11<\/td><td>.0962<\/td><td>.0974<\/td><td>.0981<\/td><td>.100<\/td><td>.145<\/td><td>.190<\/td><td>.230<\/td><td>.275<\/td><td>.1088<\/td><td>.01563<\/td><td>#55<\/td><\/tr>\n        <tr><td>3 (.099)-56<\/td><td>.11<\/td><td>.14<\/td><td>.1106<\/td><td>.1119<\/td><td>.1126<\/td><td>.120<\/td><td>.170<\/td><td>.220<\/td><td>.270<\/td><td>.310<\/td><td>.1247<\/td><td>.01786<\/td><td>#48<\/td><\/tr>\n        <tr><td>4 (.112)-48<\/td><td>.14<\/td><td>.17<\/td><td>.1256<\/td><td>.1271<\/td><td>.1279<\/td><td>.130<\/td><td>.190<\/td><td>.240<\/td><td>.300<\/td><td>.360<\/td><td>.1419<\/td><td>.02083<\/td><td>#43<\/td><\/tr>\n        <tr><td>6 (.138)-40<\/td><td>.17<\/td><td>.20<\/td><td>.1543<\/td><td>.1560<\/td><td>.1569<\/td><td>.160<\/td><td>.230<\/td><td>.300<\/td><td>.370<\/td><td>.440<\/td><td>.1733<\/td><td>.02500<\/td><td>#33<\/td><\/tr>\n        <tr><td>8 (.164)-36<\/td><td>.20<\/td><td>.23<\/td><td>.1821<\/td><td>.1840<\/td><td>.1849<\/td><td>.190<\/td><td>.270<\/td><td>.360<\/td><td>.440<\/td><td>.520<\/td><td>.2032<\/td><td>.02778<\/td><td>#29<\/td><\/tr>\n        <tr><td>10 (.190)-32<\/td><td>.23<\/td><td>.26<\/td><td>.2103<\/td><td>.2123<\/td><td>.2133<\/td><td>.220<\/td><td>.320<\/td><td>.410<\/td><td>.510<\/td><td>.600<\/td><td>.2337<\/td><td>.03125<\/td><td>#21<\/td><\/tr>\n        <tr><td>1\/4 (.2500)-28<\/td><td>.29<\/td><td>.32<\/td><td>.2732<\/td><td>.2754<\/td><td>.2765<\/td><td>.290<\/td><td>.410<\/td><td>.540<\/td><td>.660<\/td><td>.790<\/td><td>.2995<\/td><td>.03571<\/td><td>17\/64<\/td><\/tr>\n        <tr><td>5\/16 (.3125)-24<\/td><td>.36<\/td><td>.39<\/td><td>.3395<\/td><td>.3421<\/td><td>.3433<\/td><td>.350<\/td><td>.510<\/td><td>.670<\/td><td>.820<\/td><td>.980<\/td><td>.3700<\/td><td>.04167<\/td><td>21\/64<\/td><\/tr>\n        <tr><td>3\/8 (.3750)-24<\/td><td>.42<\/td><td>.45<\/td><td>.4020<\/td><td>.4047<\/td><td>.4059<\/td><td>.420<\/td><td>.600<\/td><td>.790<\/td><td>.980<\/td><td>1.170<\/td><td>.4325<\/td><td>.04167<\/td><td>25\/64<\/td><\/tr>\n        <tr><td>7\/16 (.4375)-20<\/td><td>.50<\/td><td>.53<\/td><td>.4700<\/td><td>.4731<\/td><td>.4744<\/td><td>.490<\/td><td>.710<\/td><td>.930<\/td><td>1.140<\/td><td>1.360<\/td><td>.5062<\/td><td>.05000<\/td><td>29\/64<\/td><\/tr>\n        <tr><td>1\/2 (.5000)-20<\/td><td>.56<\/td><td>.59<\/td><td>.5325<\/td><td>.5357<\/td><td>.5371<\/td><td>.550<\/td><td>.800<\/td><td>1.050<\/td><td>1.300<\/td><td>1.550<\/td><td>.5687<\/td><td>.05000<\/td><td>33\/64<\/td><\/tr>\n        <tr><td>9\/16 (.5625)-18<\/td><td>.63<\/td><td>.66<\/td><td>.5986<\/td><td>.6020<\/td><td>.6035<\/td><td>.620<\/td><td>.900<\/td><td>1.180<\/td><td>1.460<\/td><td>1.740<\/td><td>.6384<\/td><td>.05556<\/td><td>41\/64<\/td><\/tr>\n        <tr><td>5\/8 (.6250)-18<\/td><td>.69<\/td><td>.72<\/td><td>.6611<\/td><td>.6646<\/td><td>.6661<\/td><td>.680<\/td><td>.990<\/td><td>1.310<\/td><td>1.620<\/td><td>1.930<\/td><td>.7009<\/td><td>.05556<\/td><td>41\/64<\/td><\/tr>\n        <tr><td>3\/4 (.7500)-16<\/td><td>.82<\/td><td>.85<\/td><td>.7906<\/td><td>.7945<\/td><td>.7961<\/td><td>.810<\/td><td>1.190<\/td><td>1.560<\/td><td>1.940<\/td><td>2.310<\/td><td>.8352<\/td><td>.06250<\/td><td>49\/64<\/td><\/tr>\n        <tr><td>7\/8 (.8750)-14<\/td><td>.96<\/td><td>.99<\/td><td>.9214<\/td><td>.9257<\/td><td>.9274<\/td><td>.950<\/td><td>1.380<\/td><td>1.820<\/td><td>2.260<\/td><td>2.700<\/td><td>.9718<\/td><td>.07143<\/td><td>29\/32<\/td><\/tr>\n        <tr><td>1 (1.000)-14<\/td><td>1.08<\/td><td>1.11<\/td><td>1.0464<\/td><td>1.0508<\/td><td>1.0527<\/td><td>1.070<\/td><td>1.570<\/td><td>2.070<\/td><td>2.570<\/td><td>3.070<\/td><td>1.0968<\/td><td>.07143<\/td><td>1-1\/64<\/td><\/tr>\n        <tr><td>1 (1.000)-12<\/td><td>1.10<\/td><td>1.13<\/td><td>1.0542<\/td><td>1.0589<\/td><td>1.0608<\/td><td>1.080<\/td><td>1.580<\/td><td>2.080<\/td><td>2.580<\/td><td>3.080<\/td><td>1.1126<\/td><td>.08333<\/td><td>1-1\/16<\/td><\/tr>\n        <tr><td>1-1\/8 (1.1250)-12<\/td><td>1.22<\/td><td>1.25<\/td><td>1.1792<\/td><td>1.1841<\/td><td>1.1860<\/td><td>1.210<\/td><td>1.770<\/td><td>2.330<\/td><td>2.900<\/td><td>3.460<\/td><td>1.2376<\/td><td>.08333<\/td><td>1-5\/32<\/td><\/tr>\n        <tr><td>1-1\/4 (1.2500)-12<\/td><td>1.35<\/td><td>1.38<\/td><td>1.3042<\/td><td>1.3092<\/td><td>1.3112<\/td><td>1.330<\/td><td>1.960<\/td><td>2.580<\/td><td>3.210<\/td><td>3.830<\/td><td>1.3626<\/td><td>.08333<\/td><td>1-9\/32<\/td><\/tr>\n        <tr><td>1-3\/8 (1.3750)-12<\/td><td>1.47<\/td><td>1.50<\/td><td>1.4292<\/td><td>1.4343<\/td><td>1.4364<\/td><td>1.460<\/td><td>2.150<\/td><td>2.830<\/td><td>3.520<\/td><td>4.210<\/td><td>1.4876<\/td><td>.08333<\/td><td>1-13\/32<\/td><\/tr>\n        <tr><td>1-1\/2 (1.5000)-12<\/td><td>1.60<\/td><td>1.63<\/td><td>1.5542<\/td><td>1.5595<\/td><td>1.5615<\/td><td>1.580<\/td><td>2.330<\/td><td>3.080<\/td><td>3.830<\/td><td>4.580<\/td><td>1.6126<\/td><td>.08333<\/td><td>1-17\/32<\/td><\/tr>\n        <tr><td>1-3\/4 (1.7500)-12<\/td><td>1.85<\/td><td>1.88<\/td><td>1.8042<\/td><td>1.8098<\/td><td>1.8120<\/td><td>1.830<\/td><td>2.710<\/td><td>3.580<\/td><td>4.460<\/td><td>5.330<\/td><td>1.8626<\/td><td>.08333<\/td><td>1-13\/16<\/td><\/tr>\n        <tr><td>2 (2.0000)-12<\/td><td>2.10<\/td><td>2.13<\/td><td>2.0542<\/td><td>2.0601<\/td><td>2.0624<\/td><td>2.080<\/td><td>3.080<\/td><td>4.080<\/td><td>5.080<\/td><td>6.080<\/td><td>2.1126<\/td><td>.08333<\/td><td>2-1\/16<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n<\/div>\n\n\n\n<div class=\"misumi-helicoil-chart\">\n  <style>\n    .misumi-helicoil-chart{\n      --misumi-blue:#005BAC;\n      --misumi-yellow:#FFD100;\n      --misumi-black:#111111;\n      --misumi-white:#FFFFFF;\n      --misumi-gray:#f4f4f4;\n      --misumi-border:#cfcfcf;\n      margin:24px 0;\n      font-family:Arial, Helvetica, sans-serif;\n      color:var(--misumi-black);\n      width:100%;\n    }\n\n    .misumi-helicoil-chart *{\n      box-sizing:border-box;\n    }\n\n    .misumi-helicoil-chart .mhc-table-wrap{\n      width:100%;\n      margin:0 0 28px 0;\n      border:2px solid var(--misumi-blue);\n      background:var(--misumi-white);\n      overflow:visible;\n    }\n\n    .misumi-helicoil-chart table{\n      width:100%;\n      border-collapse:collapse;\n      table-layout:fixed;\n      font-size:10px;\n      line-height:1.2;\n    }\n\n    .misumi-helicoil-chart col.mhc-col-thread{width:12%;}\n    .misumi-helicoil-chart col.mhc-col-small{width:5.25%;}\n    .misumi-helicoil-chart col.mhc-col-medium{width:5.75%;}\n    .misumi-helicoil-chart col.mhc-col-drill{width:7%;}\n    .misumi-helicoil-chart col.mhc-col-pitch{width:5.5%;}\n    .misumi-helicoil-chart col.mhc-col-tap{width:6%;}\n\n    .misumi-helicoil-chart th,\n    .misumi-helicoil-chart td{\n      border:1px solid var(--misumi-border);\n      padding:7px 4px;\n      text-align:center;\n      vertical-align:middle;\n    }\n\n    .misumi-helicoil-chart thead th{\n      background:var(--misumi-blue);\n      color:var(--misumi-white);\n      font-weight:700;\n      font-size:9.5px;\n      line-height:1.2;\n      white-space:normal;\n      word-break:normal;\n      overflow-wrap:break-word;\n    }\n\n    .misumi-helicoil-chart thead th.mhc-sub{\n      background:var(--misumi-yellow);\n      color:var(--misumi-black);\n    }\n\n    .misumi-helicoil-chart tbody td{\n      white-space:nowrap;\n      word-break:normal;\n      overflow-wrap:normal;\n    }\n\n    .misumi-helicoil-chart tbody tr:nth-child(even){\n      background:var(--misumi-gray);\n    }\n\n    .misumi-helicoil-chart tbody tr:hover{\n      background:var(--misumi-yellow);\n      transition:background-color .2s ease;\n    }\n\n    .misumi-helicoil-chart td:first-child,\n    .misumi-helicoil-chart th:first-child{\n      text-align:left;\n      padding-left:8px;\n    }\n\n    .misumi-helicoil-chart thead th:first-child{\n      white-space:normal;\n      word-break:break-word;\n      overflow-wrap:anywhere;\n    }\n\n    .misumi-helicoil-chart tbody td:first-child{\n      white-space:normal;\n      word-break:break-word;\n      overflow-wrap:anywhere;\n    }\n\n    .misumi-helicoil-chart .mhc-section-row td{\n      background:var(--misumi-black);\n      color:var(--misumi-white);\n      font-weight:700;\n      text-align:center;\n      font-size:12px;\n      letter-spacing:.2px;\n      padding:8px 6px;\n      white-space:normal;\n    }\n\n    @media (max-width: 1200px){\n      .misumi-helicoil-chart table{\n        font-size:9.5px;\n      }\n\n      .misumi-helicoil-chart thead th{\n        font-size:9px;\n      }\n\n      .misumi-helicoil-chart th,\n      .misumi-helicoil-chart td{\n        padding:6px 3px;\n      }\n    }\n  <\/style>\n\n  <div class=\"mhc-table-wrap\">\n    <table>\n      <colgroup>\n        <col class=\"mhc-col-thread\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-small\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-medium\">\n        <col class=\"mhc-col-tap\">\n        <col class=\"mhc-col-pitch\">\n        <col class=\"mhc-col-drill\">\n      <\/colgroup>\n      <thead>\n        <tr>\n          <th rowspan=\"3\">Thread Size<\/th>\n          <th colspan=\"2\">Countersink \u201cM\u201d Diameter<\/th>\n          <th colspan=\"3\">Pitch Diameter<\/th>\n          <th colspan=\"5\">\u201cH\u201d Minimum Tapping Depth by Insert Length<\/th>\n          <th rowspan=\"3\">Tap Major Diameter Max.<\/th>\n          <th rowspan=\"3\">Thread Pitch \u201cP\u201d<\/th>\n          <th rowspan=\"3\">Drill Size<\/th>\n        <\/tr>\n        <tr>\n          <th rowspan=\"2\" class=\"mhc-sub\">Min.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">Max.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">Min.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">4H Max.<\/th>\n          <th rowspan=\"2\" class=\"mhc-sub\">5H Max.<\/th>\n          <th colspan=\"5\" class=\"mhc-sub\">Insert Length<\/th>\n        <\/tr>\n        <tr>\n          <th class=\"mhc-sub\">1D<\/th>\n          <th class=\"mhc-sub\">1.5D<\/th>\n          <th class=\"mhc-sub\">2D<\/th>\n          <th class=\"mhc-sub\">2.5D<\/th>\n          <th class=\"mhc-sub\">3D<\/th>\n        <\/tr>\n      <\/thead>\n      <tbody>\n        <tr class=\"mhc-section-row\"><td colspan=\"14\">Metric Coarse Thread<\/td><\/tr>\n        <tr><td>M2 x 0.4<\/td><td>2.30<\/td><td>2.70<\/td><td>2.260<\/td><td>2.295<\/td><td>2.310<\/td><td>2.4<\/td><td>3.4<\/td><td>4.4<\/td><td>5.4<\/td><td>6.4<\/td><td>2.581<\/td><td>0.40<\/td><td>2.1 mm<\/td><\/tr>\n        <tr><td>M2.2 x 0.45<\/td><td>2.40<\/td><td>2.90<\/td><td>2.492<\/td><td>2.532<\/td><td>2.547<\/td><td>2.7<\/td><td>3.8<\/td><td>4.9<\/td><td>6.0<\/td><td>7.1<\/td><td>2.845<\/td><td>0.45<\/td><td>2.4 mm<\/td><\/tr>\n        <tr><td>M2.5 x 0.45<\/td><td>2.90<\/td><td>3.40<\/td><td>2.792<\/td><td>2.832<\/td><td>2.847<\/td><td>3.0<\/td><td>4.2<\/td><td>5.5<\/td><td>6.7<\/td><td>8.0<\/td><td>3.145<\/td><td>0.45<\/td><td>2.6 mm<\/td><\/tr>\n        <tr><td>M3 x 0.5<\/td><td>3.40<\/td><td>4.00<\/td><td>3.325<\/td><td>3.367<\/td><td>3.384<\/td><td>3.5<\/td><td>5.0<\/td><td>6.5<\/td><td>8.0<\/td><td>9.5<\/td><td>3.716<\/td><td>0.50<\/td><td>3.1 mm<\/td><\/tr>\n        <tr><td>M3.5 x 0.6<\/td><td>4.10<\/td><td>4.70<\/td><td>3.890<\/td><td>3.940<\/td><td>3.959<\/td><td>4.1<\/td><td>5.9<\/td><td>7.6<\/td><td>9.4<\/td><td>11.1<\/td><td>4.354<\/td><td>0.60<\/td><td>3.6 mm<\/td><\/tr>\n        <tr><td>M4 x 0.7<\/td><td>4.70<\/td><td>5.30<\/td><td>4.455<\/td><td>4.509<\/td><td>4.529<\/td><td>4.7<\/td><td>6.7<\/td><td>8.7<\/td><td>10.7<\/td><td>12.7<\/td><td>5.007<\/td><td>0.70<\/td><td>4.1 mm<\/td><\/tr>\n        <tr><td>M5 x 0.8<\/td><td>5.80<\/td><td>6.40<\/td><td>5.520<\/td><td>5.577<\/td><td>5.597<\/td><td>5.8<\/td><td>8.3<\/td><td>10.8<\/td><td>13.3<\/td><td>15.8<\/td><td>6.145<\/td><td>0.80<\/td><td>5.2 mm<\/td><\/tr>\n        <tr><td>M6 x 1.0<\/td><td>7.10<\/td><td>7.70<\/td><td>6.650<\/td><td>6.719<\/td><td>6.742<\/td><td>7.0<\/td><td>10.0<\/td><td>13.0<\/td><td>16.0<\/td><td>19.0<\/td><td>7.422<\/td><td>1.00<\/td><td>6.2 mm<\/td><\/tr>\n        <tr><td>M7 x 1.0<\/td><td>8.10<\/td><td>8.70<\/td><td>7.650<\/td><td>7.719<\/td><td>7.742<\/td><td>8.0<\/td><td>11.5<\/td><td>15.0<\/td><td>18.5<\/td><td>22.0<\/td><td>8.422<\/td><td>1.00<\/td><td>7.2 mm<\/td><\/tr>\n        <tr><td>M8 x 1.25<\/td><td>9.50<\/td><td>10.10<\/td><td>8.812<\/td><td>8.886<\/td><td>8.911<\/td><td>9.3<\/td><td>13.3<\/td><td>17.3<\/td><td>21.3<\/td><td>25.3<\/td><td>9.787<\/td><td>1.25<\/td><td>8.3 mm<\/td><\/tr>\n        <tr><td>M10 x 1.5<\/td><td>11.80<\/td><td>12.40<\/td><td>10.974<\/td><td>11.061<\/td><td>11.089<\/td><td>11.5<\/td><td>16.5<\/td><td>21.5<\/td><td>26.5<\/td><td>31.5<\/td><td>12.131<\/td><td>1.50<\/td><td>10.3 mm<\/td><\/tr>\n        <tr><td>M12 x 1.75<\/td><td>14.20<\/td><td>14.80<\/td><td>13.137<\/td><td>13.236<\/td><td>13.271<\/td><td>13.8<\/td><td>19.8<\/td><td>25.8<\/td><td>31.8<\/td><td>37.8<\/td><td>14.478<\/td><td>1.75<\/td><td>12.4 mm<\/td><\/tr>\n        <tr><td>M14 x 2.0<\/td><td>16.50<\/td><td>17.10<\/td><td>15.299<\/td><td>15.406<\/td><td>15.444<\/td><td>16.0<\/td><td>23.0<\/td><td>30.0<\/td><td>37.0<\/td><td>44.0<\/td><td>16.822<\/td><td>2.00<\/td><td>14.5 mm<\/td><\/tr>\n        <tr><td>M16 x 2.0<\/td><td>18.50<\/td><td>19.10<\/td><td>17.299<\/td><td>17.406<\/td><td>17.444<\/td><td>18.0<\/td><td>26.0<\/td><td>34.0<\/td><td>42.0<\/td><td>50.0<\/td><td>18.822<\/td><td>2.00<\/td><td>16.5 mm<\/td><\/tr>\n        <tr><td>M18 x 2.5<\/td><td>21.20<\/td><td>21.80<\/td><td>19.624<\/td><td>19.738<\/td><td>19.778<\/td><td>20.5<\/td><td>29.5<\/td><td>38.5<\/td><td>47.5<\/td><td>56.5<\/td><td>21.513<\/td><td>2.50<\/td><td>18.5 mm<\/td><\/tr>\n        <tr><td>M20 x 2.5<\/td><td>23.20<\/td><td>23.80<\/td><td>21.624<\/td><td>21.738<\/td><td>21.778<\/td><td>22.5<\/td><td>32.5<\/td><td>42.5<\/td><td>52.5<\/td><td>62.5<\/td><td>23.513<\/td><td>2.50<\/td><td>20.5 mm<\/td><\/tr>\n        <tr><td>M22 x 2.5<\/td><td>25.20<\/td><td>25.50<\/td><td>23.624<\/td><td>23.738<\/td><td>23.778<\/td><td>24.5<\/td><td>35.5<\/td><td>46.5<\/td><td>57.5<\/td><td>68.5<\/td><td>25.513<\/td><td>2.50<\/td><td>22.5 mm<\/td><\/tr>\n        <tr><td>M24 x 3.0<\/td><td>27.90<\/td><td>28.50<\/td><td>25.948<\/td><td>26.093<\/td><td>26.135<\/td><td>27.0<\/td><td>39.0<\/td><td>51.0<\/td><td>63.0<\/td><td>75.0<\/td><td>28.238<\/td><td>3.00<\/td><td>24.75 mm<\/td><\/tr>\n        <tr><td>M27 x 3.0<\/td><td>30.90<\/td><td>31.50<\/td><td>28.948<\/td><td>29.093<\/td><td>29.135<\/td><td>30.0<\/td><td>43.5<\/td><td>57.0<\/td><td>70.5<\/td><td>84.0<\/td><td>31.238<\/td><td>3.00<\/td><td>27.5 mm<\/td><\/tr>\n        <tr><td>M30 x 3.5<\/td><td>34.60<\/td><td>35.20<\/td><td>32.273<\/td><td>32.428<\/td><td>32.472<\/td><td>33.5<\/td><td>48.5<\/td><td>63.5<\/td><td>78.5<\/td><td>93.5<\/td><td>34.925<\/td><td>3.50<\/td><td>30.5 mm<\/td><\/tr>\n        <tr><td>M33 x 3.5<\/td><td>37.60<\/td><td>38.20<\/td><td>35.273<\/td><td>35.428<\/td><td>35.472<\/td><td>36.5<\/td><td>53.0<\/td><td>69.5<\/td><td>86.0<\/td><td>102.5<\/td><td>37.925<\/td><td>3.50<\/td><td>33.5 mm<\/td><\/tr>\n        <tr><td>M36 x 4.0<\/td><td>41.30<\/td><td>41.90<\/td><td>38.598<\/td><td>38.763<\/td><td>38.809<\/td><td>40.0<\/td><td>58.0<\/td><td>76.0<\/td><td>94.0<\/td><td>112.0<\/td><td>41.615<\/td><td>4.00<\/td><td>36.5 mm<\/td><\/tr>\n        <tr><td>M39 x 4.0<\/td><td>44.30<\/td><td>44.90<\/td><td>41.598<\/td><td>41.763<\/td><td>41.809<\/td><td>43.0<\/td><td>62.5<\/td><td>82.0<\/td><td>101.5<\/td><td>121.0<\/td><td>44.615<\/td><td>4.00<\/td><td>39.5 mm<\/td><\/tr>\n        <tr><td>M42 x 4.5<\/td><td>48.50<\/td><td>49.10<\/td><td>45.923<\/td><td>46.099<\/td><td>46.146<\/td><td>46.5<\/td><td>67.5<\/td><td>88.5<\/td><td>109.5<\/td><td>130.5<\/td><td>48.330<\/td><td>4.50<\/td><td>42.5 mm<\/td><\/tr>\n        <tr><td>M45 x 4.5<\/td><td>51.50<\/td><td>52.10<\/td><td>48.923<\/td><td>49.099<\/td><td>49.146<\/td><td>49.5<\/td><td>72.0<\/td><td>94.5<\/td><td>117.0<\/td><td>139.5<\/td><td>51.330<\/td><td>4.50<\/td><td>45.5 mm<\/td><\/tr>\n        <tr><td>M48 x 5.0<\/td><td>55.70<\/td><td>56.30<\/td><td>52.247<\/td><td>52.433<\/td><td>52.481<\/td><td>53.0<\/td><td>77.0<\/td><td>101.0<\/td><td>125.0<\/td><td>149.0<\/td><td>55.945<\/td><td>5.00<\/td><td>48.5 mm<\/td><\/tr>\n        <tr><td>M52 x 5.0<\/td><td>59.70<\/td><td>60.30<\/td><td>56.247<\/td><td>56.433<\/td><td>56.481<\/td><td>57.0<\/td><td>83.0<\/td><td>109.0<\/td><td>135.0<\/td><td>161.0<\/td><td>59.945<\/td><td>5.00<\/td><td>52.5 mm<\/td><\/tr>\n        <tr><td>M56 x 5.5<\/td><td>64.40<\/td><td>65.00<\/td><td>60.572<\/td><td>60.769<\/td><td>60.819<\/td><td>61.5<\/td><td>89.5<\/td><td>117.5<\/td><td>145.5<\/td><td>173.5<\/td><td>64.560<\/td><td>5.50<\/td><td>56.5 mm<\/td><\/tr>\n\n        <tr class=\"mhc-section-row\"><td colspan=\"14\">Metric Fine Thread<\/td><\/tr>\n        <tr><td>M8 x 1.0<\/td><td>9.10<\/td><td>9.70<\/td><td>8.650<\/td><td>8.719<\/td><td>8.742<\/td><td>9.0<\/td><td>13.0<\/td><td>17.0<\/td><td>21.0<\/td><td>25.0<\/td><td>9.422<\/td><td>1.00<\/td><td>8.3 mm<\/td><\/tr>\n        <tr><td>M10 x 1.0<\/td><td>11.10<\/td><td>11.70<\/td><td>10.650<\/td><td>10.719<\/td><td>10.742<\/td><td>11.0<\/td><td>16.0<\/td><td>21.0<\/td><td>26.0<\/td><td>31.0<\/td><td>11.422<\/td><td>1.00<\/td><td>10.3 mm<\/td><\/tr>\n        <tr><td>M10 x 1.25<\/td><td>11.50<\/td><td>12.10<\/td><td>10.812<\/td><td>10.886<\/td><td>10.911<\/td><td>11.3<\/td><td>16.3<\/td><td>21.3<\/td><td>26.3<\/td><td>31.3<\/td><td>11.787<\/td><td>1.25<\/td><td>10.3 mm<\/td><\/tr>\n        <tr><td>M12 x 1.25<\/td><td>13.50<\/td><td>14.10<\/td><td>12.812<\/td><td>12.898<\/td><td>12.926<\/td><td>13.3<\/td><td>19.3<\/td><td>25.3<\/td><td>31.3<\/td><td>37.3<\/td><td>13.787<\/td><td>1.25<\/td><td>12.4 mm<\/td><\/tr>\n        <tr><td>M12 x 1.5<\/td><td>13.80<\/td><td>14.40<\/td><td>12.974<\/td><td>13.067<\/td><td>13.099<\/td><td>13.5<\/td><td>19.5<\/td><td>25.5<\/td><td>31.5<\/td><td>37.5<\/td><td>14.131<\/td><td>1.50<\/td><td>12.4 mm<\/td><\/tr>\n        <tr><td>M14 x 1.5<\/td><td>15.80<\/td><td>16.40<\/td><td>14.974<\/td><td>15.067<\/td><td>15.099<\/td><td>15.5<\/td><td>22.5<\/td><td>29.5<\/td><td>36.5<\/td><td>43.5<\/td><td>16.131<\/td><td>1.50<\/td><td>14.3 mm<\/td><\/tr>\n        <tr><td>M16 x 1.5<\/td><td>17.80<\/td><td>18.40<\/td><td>16.974<\/td><td>17.067<\/td><td>17.099<\/td><td>17.5<\/td><td>25.5<\/td><td>33.5<\/td><td>41.5<\/td><td>49.5<\/td><td>18.131<\/td><td>1.50<\/td><td>16.25 mm<\/td><\/tr>\n        <tr><td>M18 x 1.5<\/td><td>19.80<\/td><td>20.40<\/td><td>18.974<\/td><td>19.067<\/td><td>19.099<\/td><td>19.5<\/td><td>28.5<\/td><td>37.5<\/td><td>46.5<\/td><td>55.5<\/td><td>20.131<\/td><td>1.50<\/td><td>18.25 mm<\/td><\/tr>\n        <tr><td>M20 x 1.5<\/td><td>21.80<\/td><td>22.40<\/td><td>20.974<\/td><td>21.067<\/td><td>21.099<\/td><td>21.5<\/td><td>31.5<\/td><td>41.5<\/td><td>51.5<\/td><td>61.5<\/td><td>22.131<\/td><td>1.50<\/td><td>20.25 mm<\/td><\/tr>\n        <tr><td>M22 x 1.5<\/td><td>23.80<\/td><td>24.40<\/td><td>22.974<\/td><td>23.067<\/td><td>23.099<\/td><td>23.5<\/td><td>34.5<\/td><td>45.5<\/td><td>56.5<\/td><td>67.5<\/td><td>24.131<\/td><td>1.50<\/td><td>22.25 mm<\/td><\/tr>\n        <tr><td>M18 x 2.0<\/td><td>20.50<\/td><td>21.10<\/td><td>19.299<\/td><td>19.406<\/td><td>19.444<\/td><td>20.0<\/td><td>29.0<\/td><td>38.0<\/td><td>47.0<\/td><td>56.0<\/td><td>20.822<\/td><td>2.00<\/td><td>18.5 mm<\/td><\/tr>\n        <tr><td>M20 x 2.0<\/td><td>22.50<\/td><td>23.10<\/td><td>21.299<\/td><td>21.406<\/td><td>21.444<\/td><td>22.0<\/td><td>32.0<\/td><td>42.0<\/td><td>52.0<\/td><td>62.0<\/td><td>22.822<\/td><td>2.00<\/td><td>20.5 mm<\/td><\/tr>\n        <tr><td>M22 x 2.0<\/td><td>24.50<\/td><td>25.10<\/td><td>23.299<\/td><td>23.406<\/td><td>23.444<\/td><td>24.0<\/td><td>35.0<\/td><td>46.0<\/td><td>57.0<\/td><td>68.0<\/td><td>24.822<\/td><td>2.00<\/td><td>22.5 mm<\/td><\/tr>\n        <tr><td>M24 x 2.0<\/td><td>26.50<\/td><td>27.10<\/td><td>25.299<\/td><td>25.414<\/td><td>25.454<\/td><td>26.0<\/td><td>38.0<\/td><td>50.0<\/td><td>62.0<\/td><td>74.0<\/td><td>26.822<\/td><td>2.00<\/td><td>24.25 mm<\/td><\/tr>\n        <tr><td>M27 x 2.0<\/td><td>29.50<\/td><td>30.10<\/td><td>28.299<\/td><td>28.414<\/td><td>28.454<\/td><td>29.0<\/td><td>42.5<\/td><td>56.0<\/td><td>69.5<\/td><td>83.0<\/td><td>29.822<\/td><td>2.00<\/td><td>27.25 mm<\/td><\/tr>\n        <tr><td>M30 x 2.0<\/td><td>32.50<\/td><td>33.10<\/td><td>31.299<\/td><td>31.414<\/td><td>31.454<\/td><td>32.0<\/td><td>47.0<\/td><td>62.0<\/td><td>77.0<\/td><td>92.0<\/td><td>32.822<\/td><td>2.00<\/td><td>30.25 mm<\/td><\/tr>\n        <tr><td>M33 x 2.0<\/td><td>35.50<\/td><td>36.10<\/td><td>34.299<\/td><td>34.414<\/td><td>34.454<\/td><td>35.0<\/td><td>51.5<\/td><td>68.0<\/td><td>84.5<\/td><td>101.0<\/td><td>35.822<\/td><td>2.00<\/td><td>33.25 mm<\/td><\/tr>\n      <\/tbody>\n    <\/table>\n  <\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<style>\n.threaded-inserts-helical-cta {\n    display: inline-flex;\n    align-items: center;\n    padding: 12px 24px;\n    background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);\n    color: #003366;\n    text-decoration: none;\n    border-radius: 6px;\n    font-weight: 600;\n    font-size: 16px;\n    letter-spacing: 0.5px;\n    transition: all 0.3s ease;\n    box-shadow: 0 4px 12px rgba(255, 215, 0, 0.3);\n    border: 2px solid #0066CC;\n    cursor: pointer;\n    text-transform: uppercase;\n}\n\n.threaded-inserts-helical-cta:hover {\n    background: linear-gradient(135deg, #FFC107 0%, #FFB300 100%);\n    border-color: #004499;\n    transform: translateY(-2px);\n    box-shadow: 0 6px 16px rgba(255, 215, 0, 0.4);\n}\n\n.threaded-inserts-helical-cta:active {\n    transform: translateY(0);\n    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.3);\n}\n\n.cta-icon {\n    margin-right: 8px;\n    font-size: 18px;\n}\n<\/style>\n\n<a href=\"https:\/\/us.misumi-ec.com\/vona2\/mech_screw\/M3304000000\/M3304020000\/\" class=\"threaded-inserts-helical-cta\">\n    <span class=\"cta-icon\">\u2699<\/span>\n    Browse Threaded Inserts &amp; Helical Coils\n<\/a>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Parting Thoughts<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/us.misumi-ec.com\/\">MISUMI USA<\/a>&nbsp;carries a wide range of&nbsp;Inserts, including \u2013 threaded inserts,&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/vona2\/mech_screw\/M3304000000\/M3304010000\/\">tangless inserts<\/a>,&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/vona2\/mech_screw\/M3304000000\/M3304040000\/\">insert tools<\/a>, helicals, and more. If you have any questions about fastening concerns for your next project or fix, please feel free to contact our&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/service\/info\/help-center\/product-support.html\">product experts, and engineers<\/a>. For more insights about thread inserts\/helicals, and other manufacturing related articles be sure to check out our blog, and articles like \u2013&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/blog\/what-is-a-helicoil\/\">What Is a Helicoil and When Should You Use One?<\/a>,&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/blog\/helicoil-vs-threaded-insert\/\">Helicoil vs. Threaded Insert<\/a>, <a href=\"https:\/\/us.misumi-ec.com\/blog\/6-quick-facts-about-helical-coils\/\" title=\"\">6 Quick Facts About Helical Coils<\/a>, and more.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Author:&nbsp;<a href=\"https:\/\/us.misumi-ec.com\/blog\/author\/sbredemann\/\">Scott Bredemann<\/a>&nbsp;| Updated: 4\/23\/2026<\/p>\n\n\n\n<p class=\"has-small-font-size wp-block-paragraph\"><strong>Disclaimer:<br><\/strong>The content on this webpage is for informational purposes only. MISUMI makes no guarantees, expressed or implied, regarding the accuracy, completeness, or validity of the information. Performance parameters, tolerances, designs, materials, or processes should not be assumed to reflect third-party suppliers\u2019 or manufacturers\u2019 deliverables within MISUMI\u2019s network. Buyers are responsible for specifying their part requirements.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>These charts are intended to serve as a practical reference for common Helicoil sizes. Whether the goal is thread repair, improving thread strength in softer materials, or preparing a new hole for repeated assembly, the correct helical insert dimensions help ensure the insert installs cleanly and the finished thread performs as expected. Thread Size Countersink \u201cM\u201d Diameter(120\u00b0\u201345\u00b0 Included Angle) Pitch [&hellip;]<\/p>\n","protected":false},"author":70,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"om_disable_all_campaigns":false,"footnotes":""},"class_list":["post-16748","page","type-page","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Find the correct Helicoil tap size with this inch and metric chart, including drill sizes, thread pitch, and key dimensions for helical insert installation.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"google-site-verification\" content=\"QwaqEjZx4CWzex2BzSRe0fIKP303dZjHd7EihVrq6mE\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/blog.misumiusa.com\/helicoil-tap-and-drill-size-chart\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO 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