diff --git a/A00_Common/line_stack_text.ts b/A00_Common/line_stack_text.ts
index ff8df78b7..7d712d363 100644
--- a/A00_Common/line_stack_text.ts
+++ b/A00_Common/line_stack_text.ts
@@ -14,7 +14,7 @@ const TEXT = {
   Add_Item: ["+ 그룹", "+ Group"],
   Add_Line: ["줄 더함", "Add line"],
   Add_율: ["율 — 그룹 소계의 %", "Rate — % of subtotal"],
-  Add_식: ["식 — 공식 틀", "Formula"],
+  Add_식: ["식", "Formula"],
   Del_Item: ["그룹 지움", "Delete group"],
   Del: ["지움", "Delete"],
   Item: ["그룹", "Group"],
diff --git a/M01_MasterData/M01_MasterData_UI_LogicLab.ts b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
index 319f5f606..7f1f1d0d8 100644
--- a/M01_MasterData/M01_MasterData_UI_LogicLab.ts
+++ b/M01_MasterData/M01_MasterData_UI_LogicLab.ts
@@ -571,7 +571,13 @@ export async function mountM01LogicLab(
   showLoadingOverlay();
   const openKeyOn = async (key: string): Promise<void> => {
     if (!(await leave())) return;
-    const found = allLogics.find((x) => x.키 === key);
+    // 목록에 없는 부품 문서(813-2) = 키로 읽어 엶
+    const found =
+      allLogics.find((x) => x.키 === key) ??
+      (await fetchLogic(key).then(
+        (o) => o.logic as unknown as { 구분: string; 키: string },
+        () => null,
+      ));
     if (found) await open(logicId(found.구분, found.키), found.구분, found.키);
     else showToast(tx("Load_Failed"), "error");
   };
diff --git a/M01_MasterData/M01_MasterData_UI_Page.ts b/M01_MasterData/M01_MasterData_UI_Page.ts
index 1e093674f..decbba1ce 100644
--- a/M01_MasterData/M01_MasterData_UI_Page.ts
+++ b/M01_MasterData/M01_MasterData_UI_Page.ts
@@ -48,6 +48,7 @@ import {
 } from "./M01_MasterData_UI_Side";
 import { loadTable } from "./M01_MasterData_UI_Logic_Note";
 import { tl } from "./M01_MasterData_UI_LogicLab_Text";
+import { renderParts } from "./M01_MasterData_UI_Parts";
 import { renderTables } from "./M01_MasterData_UI_Tables";
 import type { LogicHandle } from "./M01_MasterData_UI_LogicLab";
 import "./M01_MasterData_UI_Style.css";
@@ -84,6 +85,7 @@ function buildPage(): HTMLElement {
     attrs: { hidden: "" },
   });
   const body = el("div", { className: "m01-master__body" });
+  const partsHost = el("div"); // 기계 · 계수 표 아래 부품 문서(813-2)
   // 제목 줄 · 찾기 줄 = 「단가산출 로직」 화면과 같은 공용 조각
   const headBar = buildHeadBar({ title, status: [summary], buttons: [drop, save] });
   const head = el("div", {
@@ -99,6 +101,7 @@ function buildPage(): HTMLElement {
       notice,
       el("p", { className: "m01-master__hint", text: L("M01_WideHint") }),
       body,
+      partsHost,
     ],
   });
 
@@ -173,6 +176,7 @@ function buildPage(): HTMLElement {
       : pick.group === "요율"
         ? renderRateRows(body, pick, query)
         : renderRows(body, pick, query);
+    renderParts(partsHost, pick, (key) => openLogicTab(key));
     showNotice(isStale(pick.file.file, pick.file.version) ? [L("M01_FileStale")] : []);
   };
 
diff --git a/M01_MasterData/M01_MasterData_UI_Parts.ts b/M01_MasterData/M01_MasterData_UI_Parts.ts
new file mode 100644
index 000000000..e6b864cc3
--- /dev/null
+++ b/M01_MasterData/M01_MasterData_UI_Parts.ts
@@ -0,0 +1,105 @@
+/* =============================================================================
+ * M01_MasterData_UI_Parts.ts
+ * M01 「기계」 · 「계수」 표 아래 부품 문서(PLAN 813-2 · 요구 722-3 · 724~732) — 단가산출 기초 목록에서 뺀 보조 문서 자리
+ *   기계 · 상세구분(기종) 고름 = 「시간당 기계경비 계산식」(그 기종 기계가 쓰는 방식 · 기계 수) · 「작업량 공식 틀」(그 기종 틀)
+ *   계수 = 「계수식」(기계 무관 · 돈 아닌 식 넷)
+ *   이름 누름 = 줄 쌓기 읽기 창(`createStackScreen` · 고침 없음) · [단가산출 기초에서 열기] = 지금 수식 탭 그대로 고침
+ *   서버 = `GET /api/m01/parts?group&detail`(`M01_MasterData_Parts.of_kind`)
+ * ========================================================================== */
+
+import { API_BASE_URL } from "@config/config_frontend";
+import { createButton } from "@ui/ui_template_button";
+import { el } from "@ui/ui_template_elements";
+import { openModal } from "@ui/ui_template_modal";
+import { currentLanguageIndex } from "@ui/ui_template_locale";
+import { createText } from "@ui/ui_template_text";
+import { createStackScreen } from "../A00_Common/line_stack_screen";
+import type { Pick } from "./M01_MasterData_UI_Side";
+
+interface Part {
+  키: string;
+  이름: string;
+  결과단위: string;
+  기계수?: number;
+}
+type Parts = Partial<Record<"기계경비식" | "작업량 틀" | "계수식", Part[]>>;
+
+const T = {
+  기계경비식: ["시간당 기계경비 계산식", "Hourly machine cost formula"],
+  "작업량 틀": ["작업량 공식 틀", "Output formula templates"],
+  계수식: ["계수식", "Coefficient formulas"],
+  Open: ["단가산출 기초에서 열기", "Open in unit price basis"],
+  Machines: ["기계", "machines"],
+  None: ["없음", "None"],
+  Close: ["닫기", "Close"],
+} as const;
+const tx = (k: keyof typeof T): string => T[k][currentLanguageIndex === 1 ? 1 : 0];
+const KINDS = ["기계경비식", "작업량 틀", "계수식"] as const;
+
+/** 표 아래 부품 칸 — 기계(상세구분 있음) · 계수만 · 그 밖 = 비움 */
+export function renderParts(host: HTMLElement, pick: Pick, openLogic: (key: string) => void): void {
+  host.replaceChildren();
+  const group = pick.group === "계수" ? "계수식" : pick.group === "기계" ? "기계" : "";
+  if (!group || (group === "기계" && !pick.detail)) return;
+  let stack: ReturnType<typeof createStackScreen> | null = null;
+  /** 줄 쌓기 읽기 창 — 고침 없음 · [단가산출 기초에서 열기] = 수식 탭에서 고침 */
+  const show = (p: Part): void => {
+    stack ??= createStackScreen({ base: "/m01/logic/doc", admin: false, cache: "m01_parts_view" });
+    const view = stack;
+    openModal({
+      title: `${p.키} · ${p.이름}`,
+      closeLabel: tx("Close"),
+      width: "1100px",
+      wide: true,
+      mount: (body, close, actions) => {
+        actions.append(
+          createButton({
+            label: tx("Open"),
+            variant: "ghost",
+            size: 28,
+            onClick: () => {
+              close();
+              openLogic(p.키);
+            },
+          }),
+        );
+        body.append(view.root);
+        view.draw(p.키, true);
+      },
+    });
+  };
+  const q = new URLSearchParams({ group, detail: pick.detail ?? "" });
+  const mine = (host.dataset.partsAsk = q.toString()); // 늦게 온 옛 답은 버림
+  void fetch(`${API_BASE_URL}/m01/parts?${q}`, { credentials: "include" })
+    .then((r): Promise<Parts> | Parts => (r.ok ? (r.json() as Promise<Parts>) : {}))
+    .catch((): Parts => ({}))
+    .then((got) => {
+      if (host.dataset.partsAsk !== mine) return;
+      const blocks = KINDS.filter((k) => k in got).map((k) => {
+        const list = got[k] ?? [];
+        const items = list.map((p) => {
+          const b = createButton({
+            label: `${p.이름}${p.기계수 ? ` · ${tx("Machines")} ${p.기계수}` : ""}`,
+            variant: "ghost",
+            tone: "link",
+            size: 28,
+            onClick: () => show(p),
+          });
+          b.dataset.part = p.키;
+          return b;
+        });
+        return el("section", {
+          className: "m01-parts__block",
+          attrs: { "data-parts": k },
+          children: [
+            el("h3", { className: "m01-parts__title", text: tx(k) }),
+            items.length
+              ? el("div", { className: "m01-parts__list", children: items })
+              : createText(tx("None")),
+          ],
+        });
+      });
+      if (blocks.length)
+        host.replaceChildren(el("div", { className: "m01-parts", children: blocks }));
+    });
+}
diff --git a/M01_MasterData/M01_MasterData_UI_Style.css b/M01_MasterData/M01_MasterData_UI_Style.css
index 277e16c7f..71f77c7ae 100644
--- a/M01_MasterData/M01_MasterData_UI_Style.css
+++ b/M01_MasterData/M01_MasterData_UI_Style.css
@@ -170,3 +170,21 @@ table.m01-master__grid {
   gap: var(--spacing-8);
   padding: var(--spacing-4) var(--spacing-8);
 }
+
+/* 부품 문서(813-2) — 기계 · 계수 표 아래 */
+.m01-parts {
+  display: flex;
+  flex-direction: column;
+  gap: var(--spacing-12);
+  margin-top: var(--spacing-16);
+}
+.m01-parts__title {
+  margin: 0 0 var(--spacing-4);
+  font-size: var(--text-body);
+  color: var(--color-text);
+}
+.m01-parts__list {
+  display: flex;
+  flex-wrap: wrap;
+  gap: var(--spacing-4);
+}