{"id":922,"date":"2026-09-02T03:00:22","date_gmt":"2026-09-02T01:00:22","guid":{"rendered":"https:\/\/macromillcnc.com\/cnc-thread-depth-fit-visualizer\/"},"modified":"2026-09-02T03:00:46","modified_gmt":"2026-09-02T01:00:46","slug":"cnc-thread-depth-fit-visualizer","status":"publish","type":"page","link":"https:\/\/macromillcnc.com\/cnc-thread-depth-fit-visualizer\/","title":{"rendered":"CNC Thread Depth &#038; Fit Visualizer"},"content":{"rendered":"<main class=\"app\"><div class=\"shell\">\r\n<header class=\"topbar\"><div class=\"brand\"><img decoding=\"async\" class=\"brand-logo\" src=\"https:\/\/i0.wp.com\/macromillcnc.com\/wp-content\/uploads\/2026\/08\/ChatGPT-Image-Aug-31-2026-04_42_58-AM.png?resize=2172%2C724&amp;ssl=1\" alt=\"MACROMILL CNC\"><div><strong>MACROMILL Thread Fit Visualizer<\/strong><small>Thread depth &amp; mating dimensions<\/small><\/div><\/div><div class=\"topbar-actions\"><div class=\"status\"><i><\/i> Local processing \u00b7 Preview ready<\/div><a class=\"wa-top\" href=\"https:\/\/chat.whatsapp.com\/Htae97asBiD14QiwMXjGJA\" target=\"_blank\" rel=\"noopener\" aria-label=\"Join the MACROMILL WhatsApp group\" title=\"Join WhatsApp group\"><span class=\"sr-only\">Join WhatsApp group<\/span><\/a><a class=\"wa-top\" href=\"https:\/\/wa.me\/27823701440\" target=\"_blank\" rel=\"noopener\" aria-label=\"Chat with MACROMILL on WhatsApp at +27 82 370 1440\" title=\"Chat on WhatsApp\"><span class=\"sr-only\">Chat on WhatsApp<\/span><\/a><\/div><\/header>\r\n<div class=\"workspace\">\r\n<section class=\"controls glass\"><div class=\"section-tag\">Thread configuration<\/div><h1>CNC Thread Depth &amp; Fit Visualizer<\/h1><p class=\"lede\">Enter the thread diameter and pitch. See exactly how deep to machine the thread and what dimensions the mating bolt or nut requires.<\/p>\r\n<div class=\"field-grid\">\r\n<div class=\"field full\"><label>Thread system<\/label><div class=\"mode\"><button type=\"button\" id=\"sysMetric\" class=\"active\">Metric<\/button><button type=\"button\" id=\"sysImperial\">Imperial<\/button><\/div><\/div>\r\n<div class=\"field full\"><label>Thread side<\/label><div class=\"mode\"><button type=\"button\" id=\"sideExternal\" class=\"active\">External \/ Bolt<\/button><button type=\"button\" id=\"sideInternal\">Internal \/ Nut<\/button><\/div><\/div>\r\n<div class=\"field full\"><label>Thread profile<\/label><select id=\"profile\"><option value=\"60\" selected>60\u00b0 Metric \/ Unified<\/option><option value=\"55\">55\u00b0 Whitworth \/ BSP<\/option><option value=\"acme\">ACME<\/option><option value=\"trap\">Trapezoidal<\/option><option value=\"buttress\">Buttress<\/option><\/select><\/div>\r\n<div class=\"field\"><label id=\"diaLabel\">Major \/ nominal diameter<\/label><input id=\"diameter\" type=\"number\" value=\"30\" min=\"0.1\" step=\"0.001\"><\/div>\r\n<div class=\"field\" id=\"pitchField\"><label>Pitch<\/label><input id=\"pitch\" type=\"number\" value=\"2\" min=\"0.01\" step=\"0.001\"><\/div>\r\n<div class=\"field hidden\" id=\"tpiField\"><label>TPI<\/label><input id=\"tpi\" type=\"number\" value=\"13\" min=\"0.1\" step=\"0.001\"><\/div>\r\n<div class=\"field\"><label>Thread length<\/label><input id=\"length\" type=\"number\" value=\"30\" min=\"0.1\" step=\"0.1\"><\/div>\r\n<div class=\"field full\"><label>Fit \/ tolerance<\/label><select id=\"fit\"><option value=\"metric6\" selected>ISO Metric 6g \/ 6H<\/option><option value=\"basic\">Basic profile \u2014 no manufacturing tolerance<\/option><\/select><\/div>\r\n<\/div>\r\n<button class=\"primary\" id=\"calculate\" type=\"button\">Calculate thread<\/button>\r\n<div class=\"check-size\"><div class=\"section-tag\">Check my machined part <small>(optional measurements)<\/small><\/div>\r\n<div class=\"check-grid\" id=\"checkExternal\"><div class=\"field\"><label>Actual major \u00d8<\/label><input id=\"actMajor\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><div class=\"field\"><label>Actual pitch \u00d8<\/label><input id=\"actPitchExternal\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><div class=\"field\"><label>Actual minor \u00d8<\/label><input id=\"actMinor\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><\/div>\r\n<div class=\"check-grid\" id=\"checkInternal\"><div class=\"field\"><label>Actual bore \/ minor \u00d8<\/label><input id=\"actBoreMinor\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><div class=\"field\"><label>Actual pitch \u00d8<\/label><input id=\"actPitchInternal\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><div class=\"field\"><label>Actual major \u00d8<\/label><input id=\"actMajorInternal\" type=\"number\" step=\"0.001\" placeholder=\"unmeasured\"><\/div><\/div>\r\n<p class=\"check-hint\">Enter measurements for both mating parts. Pitch diameters govern the fit; without both pitch diameters the result is an estimate, not a certified tolerance inspection.<\/p><\/div>\r\n<div class=\"usage\"><span id=\"fitStatus\">Fit \u00b7 awaiting calculation<\/span><span>Processed offline<\/span><\/div><\/section>\r\n<section class=\"viewport glass is-empty\" id=\"viewport\"><div class=\"hud\"><div class=\"hud-group\"><div class=\"chip\">Side <b id=\"hudSide\">External<\/b><\/div><div class=\"chip\">Profile <b id=\"hudProfile\">60\u00b0<\/b><\/div><\/div><div class=\"hud-group\"><div class=\"chip fit-chip fit-ok\" id=\"hudFit\"><i><\/i>Fit <b id=\"hudFitLabel\">\u2014<\/b><\/div><\/div><\/div><div class=\"sim-banner\" id=\"simBanner\"><div class=\"sim-banner-title\" id=\"simBannerTitle\">THEORETICAL FIT<\/div><div class=\"sim-banner-detail\" id=\"simBannerDetail\">Calculate a thread, then press Simulate.<\/div><\/div><div class=\"placeholder-copy\" id=\"modelPlaceholder\"><b>Loading 3D assembly<\/b><span>Bolt and nut models are loading into the viewer.<\/span><\/div><div class=\"view-tools\" aria-label=\"3D view controls\"><button id=\"simSimulate\" type=\"button\" class=\"sim-go\">Simulate<\/button><button id=\"simPause\" type=\"button\" disabled>Pause<\/button><button id=\"simReset\" type=\"button\">Reset<\/button><\/div><div class=\"transport\"><button id=\"resetView\" type=\"button\" aria-label=\"Reset view\">\u21ba<\/button><select id=\"viewSelect\" aria-label=\"View selection\"><option value=\"top\" selected>TOP VIEW<\/option><option value=\"iso\">ISO VIEW<\/option><option value=\"front\">FRONT VIEW<\/option><option value=\"right\">RIGHT VIEW<\/option><\/select><\/div><\/section>\r\n<\/div>\r\n<div class=\"results-row\">\r\n<section class=\"output glass\" id=\"panelYours\"><div class=\"out-head\"><div><div class=\"section-tag\">Machining dimensions<\/div><h2 id=\"yoursTitle\">Your bolt<\/h2><\/div><div class=\"badge\" id=\"yoursBadge\">EXTERNAL \u00b7 CUSTOM<\/div><\/div><div class=\"metrics\" id=\"yoursMetrics\"><\/div><p class=\"warning\">Deterministic engineering geometry for custom diameters and pitches. Validate against the relevant thread standard and the machine\u2019s limits before cutting.<\/p><\/section>\r\n<section class=\"output glass\" id=\"panelMate\"><div class=\"out-head\"><div><div class=\"section-tag\">Mating part<\/div><h2 id=\"mateTitle\">Machine your nut<\/h2><\/div><div class=\"badge\" id=\"mateBadge\">INTERNAL \u00b7 ISO 6H<\/div><\/div><div class=\"metrics\" id=\"mateMetrics\"><\/div><p class=\"warning\">Nominal size identifies the thread. Manufacturing acceptance is determined separately from ISO metric tolerance limits, principally at pitch diameter. 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