diff --git a/WebContent/WEB-INF/view/partMng/structurePopupLeft.jsp b/WebContent/WEB-INF/view/partMng/structurePopupLeft.jsp
index 3d50a16..9c69cef 100644
--- a/WebContent/WEB-INF/view/partMng/structurePopupLeft.jsp
+++ b/WebContent/WEB-INF/view/partMng/structurePopupLeft.jsp
@@ -80,6 +80,7 @@ function fn_initGrid() {
 			width: 60,
 			title: '선택',
 			field: 'RADIO',
+			headerSort: false,
 			formatter: function(cell) {
 				var rowData = cell.getData();
 				return '<input type="radio" name="checkedPartNo" value="' + rowData.CHILD_OBJID + '" ' +
@@ -113,6 +114,7 @@ function fn_initGrid() {
 			width: 30,
 			title: i,
 			field: 'LEVEL_' + i,
+			headerSort: false,
 			formatter: function(cell) {
 				return cell.getValue() === '*' ? '*' : '';
 			}
@@ -122,6 +124,7 @@ function fn_initGrid() {
 	columns.push({
 		title: '수준',
 		headerHozAlign: 'center',
+		headerSort: false,
 		columns: levelColumns
 	});
 	
@@ -133,6 +136,7 @@ function fn_initGrid() {
 			width: 150,
 			title: '품번',
 			field: 'PART_NO',
+			headerSort: false,
 			formatter: function(cell) {
 				var rowData = cell.getData();
 				return '<a href="#" onclick="openPartMngPopup(\'' + 
@@ -148,7 +152,8 @@ function fn_initGrid() {
 			hozAlign: 'left',
 			width: 200,
 			title: '품명',
-			field: 'PART_NAME'
+			field: 'PART_NAME',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
@@ -156,6 +161,7 @@ function fn_initGrid() {
 			width: 60,
 			title: '수량',
 			field: 'QTY_TEMP',
+			headerSort: false,
 			editor: function(cell, onRendered, success, cancel) {
 				var rowData = cell.getData();
 				if(rowData.STATUS === 'adding') {
@@ -185,7 +191,8 @@ function fn_initGrid() {
 			hozAlign: 'center',
 			width: 100,
 			title: '항목 수량',
-			field: 'ITEM_QTY'
+			field: 'ITEM_QTY',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
@@ -193,6 +200,7 @@ function fn_initGrid() {
 			width: 60,
 			title: '3D',
 			field: 'CU01_CNT',
+			headerSort: false,
 			formatter: function(cell) {
 				var rowData = cell.getData();
 				var isEmpty = cell.getValue() == 0;
@@ -208,6 +216,7 @@ function fn_initGrid() {
 			width: 60,
 			title: '2D',
 			field: 'CU02_CNT',
+			headerSort: false,
 			formatter: function(cell) {
 				var rowData = cell.getData();
 				var isEmpty = cell.getValue() == 0;
@@ -223,6 +232,7 @@ function fn_initGrid() {
 			width: 60,
 			title: 'PDF',
 			field: 'CU03_CNT',
+			headerSort: false,
 			formatter: function(cell) {
 				var rowData = cell.getData();
 				var isEmpty = cell.getValue() == 0;
@@ -237,42 +247,48 @@ function fn_initGrid() {
 			hozAlign: 'left',
 			width: 100,
 			title: '재료',
-			field: 'MATERIAL'
+			field: 'MATERIAL',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
 			hozAlign: 'left',
 			width: 120,
 			title: '열처리경도',
-			field: 'HEAT_TREATMENT_HARDNESS'
+			field: 'HEAT_TREATMENT_HARDNESS',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
 			hozAlign: 'left',
 			width: 120,
 			title: '열처리방법',
-			field: 'HEAT_TREATMENT_METHOD'
+			field: 'HEAT_TREATMENT_METHOD',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
 			hozAlign: 'left',
 			width: 120,
 			title: '표면처리',
-			field: 'SURFACE_TREATMENT'
+			field: 'SURFACE_TREATMENT',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
 			hozAlign: 'left',
 			width: 120,
 			title: '공급업체',
-			field: 'MAKER'
+			field: 'MAKER',
+			headerSort: false
 		},
 		{
 			headerHozAlign: 'center',
 			hozAlign: 'center',
 			width: 120,
 			title: '범주 이름',
-			field: 'PART_TYPE_TITLE'
+			field: 'PART_TYPE_TITLE',
+			headerSort: false
 		}
 	);
 	
@@ -280,6 +296,7 @@ function fn_initGrid() {
 		layout: "fitColumns",
 		height: "650px",
 		pagination: false,
+		headerSort: false, // 정렬 비활성화
 		columns: columns,
 		rowFormatter: function(row) {
 			var data = row.getData();