diff --git a/erpnext/manufacturing/doctype/work_order/work_order.js b/erpnext/manufacturing/doctype/work_order/work_order.js
index cfd6263ca3a..3cdfb20742e 100644
--- a/erpnext/manufacturing/doctype/work_order/work_order.js
+++ b/erpnext/manufacturing/doctype/work_order/work_order.js
@@ -244,7 +244,13 @@ frappe.ui.form.on("Work Order", {
 	},
 
 	toggle_items_editable(frm) {
-		frm.toggle_enable("required_items", frm.doc.__onload?.allow_editing_items === 1 ? 1 : 0);
+		if (!frm.doc.__onload?.allow_editing_items) {
+			frm.set_df_property("required_items", "cannot_delete_rows", true);
+			frm.set_df_property("required_items", "cannot_add_rows", true);
+			frm.fields_dict["required_items"].grid.update_docfield_property("item_code", "read_only", 1);
+			frm.fields_dict["required_items"].grid.update_docfield_property("required_qty", "read_only", 1);
+			frm.fields_dict["required_items"].grid.refresh();
+		}
 	},
 
 	hide_reserve_stock_button(frm) {
diff --git a/erpnext/manufacturing/doctype/work_order_item/work_order_item.json b/erpnext/manufacturing/doctype/work_order_item/work_order_item.json
index f4b05c51f7b..e5f322ca367 100644
--- a/erpnext/manufacturing/doctype/work_order_item/work_order_item.json
+++ b/erpnext/manufacturing/doctype/work_order_item/work_order_item.json
@@ -160,7 +160,8 @@
    "fieldname": "stock_uom",
    "fieldtype": "Link",
    "label": "Stock UOM",
-   "options": "UOM"
+   "options": "UOM",
+   "read_only": 1
   },
   {
    "fieldname": "section_break_idhr",
@@ -206,7 +207,7 @@
  "grid_page_length": 50,
  "istable": 1,
  "links": [],
- "modified": "2025-10-12 14:27:16.721532",
+ "modified": "2025-12-02 11:16:05.081613",
  "modified_by": "Administrator",
  "module": "Manufacturing",
  "name": "Work Order Item",