{"id":427,"date":"2026-01-30T03:07:52","date_gmt":"2026-01-30T03:07:52","guid":{"rendered":"https:\/\/www.jccncmachining.com\/?post_type=process&p=427"},"modified":"2026-01-30T03:07:52","modified_gmt":"2026-01-30T03:07:52","slug":"metric-threads","status":"publish","type":"process","link":"https:\/\/www.jccncmachining.com\/ko\/%ec%97%ad%eb%9f%89\/metric-threads\/","title":{"rendered":"\ubbf8\ud130 \ub098\uc0ac"},"content":{"rendered":"

<\/p>\n

\n

\uc8fc\uc694 \uc0ac\uc591<\/h3>\n<\/div>\n
\n\n\n\n\n\n\n\n\n\n\n
\uc0ac\uc591<\/th>\n\uae30\uc220 \ubc94\uc704<\/th>\n\ube44\uace0<\/th>\n<\/tr>\n<\/thead>\n
Thread Range<\/strong><\/td>\nM1.0 to M150<\/td>\nCoarse & Fine pitches<\/td>\n<\/tr>\n
Standard Profile<\/strong><\/td>\nISO 68-1 (60\u00b0 V-Thread)<\/td>\nGlobal standard<\/td>\n<\/tr>\n
Tolerance Class (Internal)<\/strong><\/td>\n6H (Standard), 4H (Precision)<\/td>\nChecked with Plug Gauge<\/td>\n<\/tr>\n
Tolerance Class (External)<\/strong><\/td>\n6g (Standard), 4g (Precision)<\/td>\nChecked with Ring Gauge<\/td>\n<\/tr>\n
Methods<\/strong><\/td>\nCut, Rolled, Ground, Milled<\/td>\n\uc7ac\uc9c8\uc5d0 \ub530\ub77c \ub2e4\ub984<\/td>\n<\/tr>\n
\ud638\ud658 \uac00\ub2a5\ud55c \uc7ac\ub8cc<\/strong><\/td>\nAll Metals & Plastics<\/td>\nSpecific taps for specific metals<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n

Threading Methods<\/h3>\n\n\n\n\n\n\n\n\n
\ubc29\ubc95<\/th>\n\uc124\uba85<\/th>\n\uc8fc\uc694 \uc774\uc810 \ubc0f \uc751\uc6a9 \ubd84\uc57c<\/th>\n<\/tr>\n<\/thead>\n
Rigid Tapping<\/strong><\/td>\nSynchronizing the machine spindle rotation with the feed rate to cut threads using a tap.<\/td>\n\uc774\uc810:<\/strong> Highest speed and accuracy for standard holes (M2-M20).
\n\uc751\uc6a9:<\/strong> Electronic enclosures, automotive brackets.<\/td>\n<\/tr>\n
\ub098\uc0ac \ubc00\ub9c1<\/strong><\/td>\nUsing a rotating multi-tooth cutter to interpolate the thread path. Can cut ID and OD threads.<\/td>\n\uc774\uc810:<\/strong> Can thread hard metals (50+ HRC), precise size control, one tool for multiple sizes.
\n\uc751\uc6a9:<\/strong> Large diameter aerospace parts, blind holes.<\/td>\n<\/tr>\n
Single Point Turning<\/strong><\/td>\nUsing a lathe insert to cut the thread in multiple passes.<\/td>\n\uc774\uc810:<\/strong> Can generate any custom pitch or diameter.
\n\uc751\uc6a9:<\/strong> Precision shafts, lead screws.<\/td>\n<\/tr>\n
\ub098\uc0ac \uc804\uc870<\/strong><\/td>\nCold forming the thread using dies instead of cutting. Displaces material to form the shape.<\/td>\n\uc774\uc810:<\/strong> Strongest threads (unbroken grain flow), no chips.
\n\uc751\uc6a9:<\/strong> High-strength aerospace fasteners.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

<\/p>\n

\n

Design Guidelines for Metric Threads<\/h3>\n

Thread Depth:<\/strong>
\nAvoid threading deeper than necessary. A depth of 1.5x to 2x Diameter<\/strong> is sufficient for full strength in steel. Going deeper increases the risk of tap breakage without adding strength.<\/p>\n

Blind Hole Relief:<\/strong>
\nA tap cannot cut threads all the way to the bottom of a blind hole (due to the tap chamfer). \ud301:<\/strong> Design the drill depth to be at least 1 pitch length deeper than the required full thread depth.<\/p>\n

Countersink \/ Chamfer:<\/strong>
\nAlways include a 45\u00b0 chamfer at the start of the hole. This guides the mating bolt and prevents the first thread from bulging out (mushrooming) during machining.<\/p>\n

Fine vs. Coarse Pitch:<\/strong>
\nCoarse (e.g., M10x1.5):<\/strong> Standard, less likely to cross-thread, faster assembly.
\nFine (e.g., M10x1.0):<\/strong> Stronger, better for vibration resistance, but easier to strip in soft materials.<\/p>\n<\/div>\n

<\/p>\n

\n

\uc0b0\uc5c5 \uc751\uc6a9 \ubd84\uc57c<\/h3>\n

Global Manufacturing<\/strong>
\nMetric is the standard for virtually all industries outside the USA, including Automotive (German\/Japanese specs) and Consumer Electronics.<\/p>\n

\ub85c\ubcf4\ud2f1\uc2a4<\/strong>
\nPrecision fine-pitch metric threads are used on sensor mounts and optical adjustments for fine tuning.<\/p>\n

\uc758\ub8cc \uae30\uae30<\/strong>
\nMicro-metric threads (M1.0, M1.2) are standard in surgical implants and hearing aids.<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

Metric Threads (M Profile) are the globally accepted standard for fastening, defined by ISO 261 and ISO 965. They are characterized by a 60-degree flank angle and measured by outer diameter and pitch (in millimeters).<\/p>\n

At Jucheng Precision, we produce millions of metric threaded holes and shafts annually. Our facility is equipped with high-speed Brother tapping centers for rapid production of small threads (M1.6 – M12) and 5-axis machines for complex Thread Milling of large diameter or hard metal threads. We verify thread quality using calibrated Go\/No-Go gauges to ensure every part meets the specified tolerance class (typically 6H for internal and 6g for external).<\/p>","protected":false},"featured_media":428,"template":"","process_category":[41],"class_list":["post-427","process","type-process","status-publish","has-post-thumbnail","hentry","process_category-threading-capabilities"],"_links":{"self":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/process\/427","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/process"}],"about":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/types\/process"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/media\/428"}],"wp:attachment":[{"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/media?parent=427"}],"wp:term":[{"taxonomy":"process_category","embeddable":true,"href":"https:\/\/www.jccncmachining.com\/ko\/wp-json\/wp\/v2\/process_category?post=427"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}