diff --git a/x-pack/plugins/security_solution/common/experimental_features.ts b/x-pack/plugins/security_solution/common/experimental_features.ts
index 8180f781176441..fe5fc7beeb8fa9 100644
--- a/x-pack/plugins/security_solution/common/experimental_features.ts
+++ b/x-pack/plugins/security_solution/common/experimental_features.ts
@@ -12,8 +12,6 @@ export type ExperimentalFeatures = { [K in keyof typeof allowedExperimentalValue
  * This object is then used to validate and parse the value entered.
  */
 export const allowedExperimentalValues = Object.freeze({
-  tGridEnabled: true,
-
   // FIXME:PT delete?
   excludePoliciesInFilterEnabled: false,
 
diff --git a/x-pack/plugins/security_solution/public/common/components/events_tab/events_query_tab_body.tsx b/x-pack/plugins/security_solution/public/common/components/events_tab/events_query_tab_body.tsx
index b6e8985c1d15db..ffb0361561f631 100644
--- a/x-pack/plugins/security_solution/public/common/components/events_tab/events_query_tab_body.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/events_tab/events_query_tab_body.tsx
@@ -29,8 +29,6 @@ import { getDefaultControlColumn } from '../../../timelines/components/timeline/
 import { defaultRowRenderers } from '../../../timelines/components/timeline/body/renderers';
 import { DefaultCellRenderer } from '../../../timelines/components/timeline/cell_rendering/default_cell_renderer';
 import { SourcererScopeName } from '../../store/sourcerer/model';
-import { useIsExperimentalFeatureEnabled } from '../../hooks/use_experimental_features';
-import { DEFAULT_COLUMN_MIN_WIDTH } from '../../../timelines/components/timeline/body/constants';
 import type { GlobalTimeArgs } from '../../containers/use_global_time';
 import type { QueryTabBodyProps as UserQueryTabBodyProps } from '../../../explore/users/pages/navigation/types';
 import type { QueryTabBodyProps as HostQueryTabBodyProps } from '../../../explore/hosts/pages/navigation/types';
@@ -74,7 +72,6 @@ const EventsQueryTabBodyComponent: React.FC<EventsQueryTabBodyComponentProps> =
 }) => {
   const dispatch = useDispatch();
   const { globalFullScreen } = useGlobalFullScreen();
-  const tGridEnabled = useIsExperimentalFeatureEnabled('tGridEnabled');
   const [defaultNumberFormat] = useUiSetting$<string>(DEFAULT_NUMBER_FORMAT);
   const isEnterprisePlus = useLicense().isEnterprise();
   const ACTION_BUTTON_COUNT = isEnterprisePlus ? 5 : 4;
@@ -101,20 +98,13 @@ const EventsQueryTabBodyComponent: React.FC<EventsQueryTabBodyComponentProps> =
     dispatch(
       dataTableActions.initializeDataTableSettings({
         id: tableId,
-        defaultColumns: eventsDefaultModel.columns.map((c) =>
-          !tGridEnabled && c.initialWidth == null
-            ? {
-                ...c,
-                initialWidth: DEFAULT_COLUMN_MIN_WIDTH,
-              }
-            : c
-        ),
+        defaultColumns: eventsDefaultModel.columns,
         title: i18n.EVENTS_GRAPH_TITLE,
         showCheckboxes: true,
         selectAll: true,
       })
     );
-  }, [dispatch, showExternalAlerts, tGridEnabled, tableId]);
+  }, [dispatch, showExternalAlerts, tableId]);
 
   useEffect(() => {
     return () => {
diff --git a/x-pack/plugins/security_solution/public/common/components/header_actions/actions.test.tsx b/x-pack/plugins/security_solution/public/common/components/header_actions/actions.test.tsx
index 9c79d28ce20698..d31564e8bd1af9 100644
--- a/x-pack/plugins/security_solution/public/common/components/header_actions/actions.test.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/header_actions/actions.test.tsx
@@ -127,37 +127,6 @@ describe('Actions', () => {
     (useShallowEqualSelector as jest.Mock).mockReturnValue(mockTimelineModel);
   });
 
-  test('it renders a checkbox for selecting the event when `showCheckboxes` is `true`', () => {
-    const wrapper = mount(
-      <TestProviders>
-        <Actions {...defaultProps} />
-      </TestProviders>
-    );
-
-    expect(wrapper.find('[data-test-subj="select-event"]').exists()).toEqual(true);
-  });
-
-  test('it does NOT render a checkbox for selecting the event when `showCheckboxes` is `false`', () => {
-    const wrapper = mount(
-      <TestProviders>
-        <Actions {...defaultProps} showCheckboxes={false} />
-      </TestProviders>
-    );
-
-    expect(wrapper.find('[data-test-subj="select-event"]').exists()).toBe(false);
-  });
-
-  test('it does NOT render a checkbox for selecting the event when `tGridEnabled` is `true`', () => {
-    (useIsExperimentalFeatureEnabled as jest.Mock).mockReturnValue(true);
-    const wrapper = mount(
-      <TestProviders>
-        <Actions {...defaultProps} />
-      </TestProviders>
-    );
-
-    expect(wrapper.find('[data-test-subj="select-event"]').exists()).toBe(false);
-  });
-
   describe('Guided Onboarding Step', () => {
     const incrementStepMock = jest.fn();
     beforeEach(() => {
diff --git a/x-pack/plugins/security_solution/public/common/components/header_actions/actions.tsx b/x-pack/plugins/security_solution/public/common/components/header_actions/actions.tsx
index 35028da2169a2b..6efaaa5d01ccdb 100644
--- a/x-pack/plugins/security_solution/public/common/components/header_actions/actions.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/header_actions/actions.tsx
@@ -7,7 +7,7 @@
 
 import React, { useCallback, useMemo } from 'react';
 import { useDispatch } from 'react-redux';
-import { EuiButtonIcon, EuiCheckbox, EuiLoadingSpinner, EuiToolTip } from '@elastic/eui';
+import { EuiButtonIcon, EuiToolTip } from '@elastic/eui';
 import styled from 'styled-components';
 
 import { TimelineTabs, TableId } from '@kbn/securitysolution-data-table';
@@ -48,26 +48,20 @@ const ActionsContainer = styled.div`
 
 const ActionsComponent: React.FC<ActionProps> = ({
   ariaRowindex,
-  checked,
   columnValues,
   ecsData,
   eventId,
   eventIdToNoteIds,
   isEventPinned = false,
   isEventViewer = false,
-  loadingEventIds,
   onEventDetailsPanelOpened,
-  onRowSelected,
   onRuleChange,
-  showCheckboxes,
   showNotes,
   timelineId,
   toggleShowNotes,
   refetch,
-  setEventsLoading,
 }) => {
   const dispatch = useDispatch();
-  const tGridEnabled = useIsExperimentalFeatureEnabled('tGridEnabled');
   const unifiedComponentsInTimelineEnabled = useIsExperimentalFeatureEnabled(
     'unifiedComponentsInTimelineEnabled'
   );
@@ -91,15 +85,6 @@ const ActionsComponent: React.FC<ActionProps> = ({
     [dispatch, timelineId]
   );
 
-  const handleSelectEvent = useCallback(
-    (event: React.ChangeEvent<HTMLInputElement>) =>
-      onRowSelected({
-        eventIds: [eventId],
-        isSelected: event.currentTarget.checked,
-      }),
-    [eventId, onRowSelected]
-  );
-
   const handlePinClicked = useCallback(
     () =>
       getPinOnClick({
@@ -234,23 +219,6 @@ const ActionsComponent: React.FC<ActionProps> = ({
 
   return (
     <ActionsContainer>
-      {showCheckboxes && !tGridEnabled && (
-        <div key="select-event-container" data-test-subj="select-event-container">
-          <EventsTdContent textAlign="center" width={DEFAULT_ACTION_BUTTON_WIDTH}>
-            {loadingEventIds.includes(eventId) ? (
-              <EuiLoadingSpinner size="m" data-test-subj="event-loader" />
-            ) : (
-              <EuiCheckbox
-                aria-label={i18n.CHECKBOX_FOR_ROW({ ariaRowindex, columnValues, checked })}
-                data-test-subj="select-event"
-                id={eventId}
-                checked={checked}
-                onChange={handleSelectEvent}
-              />
-            )}
-          </EventsTdContent>
-        </div>
-      )}
       <>
         {showExpandEvent && (
           <GuidedOnboardingTourStep
diff --git a/x-pack/plugins/security_solution/public/common/components/header_actions/translations.ts b/x-pack/plugins/security_solution/public/common/components/header_actions/translations.ts
index 9c783fd9d2dbac..19631feb798c6c 100644
--- a/x-pack/plugins/security_solution/public/common/components/header_actions/translations.ts
+++ b/x-pack/plugins/security_solution/public/common/components/header_actions/translations.ts
@@ -63,21 +63,6 @@ export const ACTION_INVESTIGATE_IN_RESOLVER = i18n.translate(
   }
 );
 
-export const CHECKBOX_FOR_ROW = ({
-  ariaRowindex,
-  columnValues,
-  checked,
-}: {
-  ariaRowindex: number;
-  columnValues: string;
-  checked: boolean;
-}) =>
-  i18n.translate('xpack.securitySolution.hoverActions.checkboxForRowAriaLabel', {
-    values: { ariaRowindex, checked, columnValues },
-    defaultMessage:
-      '{checked, select, false {unchecked} true {checked}} checkbox for the alert or event in row {ariaRowindex}, with columns {columnValues}',
-  });
-
 export const ACTION_INVESTIGATE_IN_RESOLVER_FOR_ROW = ({
   ariaRowindex,
   columnValues,
diff --git a/x-pack/plugins/security_solution/public/common/components/sessions_viewer/index.tsx b/x-pack/plugins/security_solution/public/common/components/sessions_viewer/index.tsx
index c208844dcf554a..5795ff57b772ef 100644
--- a/x-pack/plugins/security_solution/public/common/components/sessions_viewer/index.tsx
+++ b/x-pack/plugins/security_solution/public/common/components/sessions_viewer/index.tsx
@@ -23,8 +23,6 @@ import { SourcererScopeName } from '../../store/sourcerer/model';
 import { getDefaultControlColumn } from '../../../timelines/components/timeline/body/control_columns';
 import { useLicense } from '../../hooks/use_license';
 import { eventsDefaultModel } from '../events_viewer/default_model';
-import { useIsExperimentalFeatureEnabled } from '../../hooks/use_experimental_features';
-import { DEFAULT_COLUMN_MIN_WIDTH } from '../../../timelines/components/timeline/body/constants';
 import type { BulkActionsProp } from '../toolbar/bulk_actions/types';
 import { SecurityCellActionsTrigger } from '../cell_actions';
 
@@ -85,7 +83,6 @@ const SessionsViewComponent: React.FC<SessionsComponentsProps> = ({
   defaultColumns = sessionsHeaders,
 }) => {
   const dispatch = useDispatch();
-  const tGridEnabled = useIsExperimentalFeatureEnabled('tGridEnabled');
   const parsedFilterQuery: ESBoolQuery = useMemo(() => {
     if (filterQuery && filterQuery !== '') {
       return JSON.parse(filterQuery);
@@ -115,19 +112,12 @@ const SessionsViewComponent: React.FC<SessionsComponentsProps> = ({
       dataTableActions.initializeDataTableSettings({
         id: tableId,
         title: i18n.SESSIONS_TITLE,
-        defaultColumns: eventsDefaultModel.columns.map((c) =>
-          !tGridEnabled && c.initialWidth == null
-            ? {
-                ...c,
-                initialWidth: DEFAULT_COLUMN_MIN_WIDTH,
-              }
-            : c
-        ),
+        defaultColumns: eventsDefaultModel.columns,
         showCheckboxes: true,
         selectAll: true,
       })
     );
-  }, [dispatch, tGridEnabled, tableId]);
+  }, [dispatch, tableId]);
 
   const isEnterprisePlus = useLicense().isEnterprise();
   const ACTION_BUTTON_COUNT =
diff --git a/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.test.tsx b/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.test.tsx
index ce5126664fb14e..442b4b2d4ff62f 100644
--- a/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.test.tsx
+++ b/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.test.tsx
@@ -66,10 +66,6 @@ jest.mock('../../../common/hooks/use_license', () => ({
   useLicense: jest.fn().mockReturnValue({ isPlatinumPlus: () => true, isEnterprise: () => false }),
 }));
 
-jest.mock('../../../common/hooks/use_experimental_features', () => ({
-  useIsExperimentalFeatureEnabled: jest.fn().mockReturnValue(true),
-}));
-
 jest.mock('../../../common/utils/endpoint_alert_check', () => {
   const realEndpointAlertCheckUtils = jest.requireActual(
     '../../../common/utils/endpoint_alert_check'
diff --git a/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.tsx b/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.tsx
index f8efc47d3bd1ad..2c769b81b0481b 100644
--- a/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.tsx
+++ b/x-pack/plugins/security_solution/public/detections/components/take_action_dropdown/index.tsx
@@ -28,7 +28,6 @@ import { useHostIsolationAction } from '../host_isolation/use_host_isolation_act
 import { getFieldValue } from '../host_isolation/helpers';
 import type { Status } from '../../../../common/api/detection_engine';
 import { isAlertFromEndpointAlert } from '../../../common/utils/endpoint_alert_check';
-import { useIsExperimentalFeatureEnabled } from '../../../common/hooks/use_experimental_features';
 import { useUserPrivileges } from '../../../common/components/user_privileges';
 import { useAddToCaseActions } from '../alerts_table/timeline_actions/use_add_to_case_actions';
 import { useKibana } from '../../../common/lib/kibana';
@@ -76,7 +75,6 @@ export const TakeActionDropdown = React.memo(
     onOsqueryClick,
     scopeId,
   }: TakeActionDropdownProps) => {
-    const tGridEnabled = useIsExperimentalFeatureEnabled('tGridEnabled');
     const { loading: endpointPrivilegesLoading, canWriteEventFilters } =
       useUserPrivileges().endpointPrivileges;
 
@@ -267,7 +265,7 @@ export const TakeActionDropdown = React.memo(
 
     const items: AlertTableContextMenuItem[] = useMemo(
       () => [
-        ...(tGridEnabled ? addToCaseActionItems : []),
+        ...addToCaseActionItems,
         ...alertsActionItems,
         ...hostIsolationActionItems,
         ...endpointResponseActionsConsoleItems,
@@ -275,7 +273,6 @@ export const TakeActionDropdown = React.memo(
         ...investigateInTimelineActionItems,
       ],
       [
-        tGridEnabled,
         addToCaseActionItems,
         alertsActionItems,
         hostIsolationActionItems,
diff --git a/x-pack/plugins/security_solution/public/timelines/components/timeline/unified_components/data_table/control_column_cell_render.tsx b/x-pack/plugins/security_solution/public/timelines/components/timeline/unified_components/data_table/control_column_cell_render.tsx
index b763d0ce9951a9..48b8eaa4fc74fd 100644
--- a/x-pack/plugins/security_solution/public/timelines/components/timeline/unified_components/data_table/control_column_cell_render.tsx
+++ b/x-pack/plugins/security_solution/public/timelines/components/timeline/unified_components/data_table/control_column_cell_render.tsx
@@ -14,7 +14,6 @@ import type { TimelineModel } from '../../../../store/model';
 import type { ActionProps } from '../../../../../../common/types';
 
 const noOp = () => {};
-const emptyLoadingEventIds: string[] = [];
 export interface UnifiedActionProps extends ActionProps {
   onToggleShowNotes: (eventId?: string) => void;
   events: TimelineItem[];
@@ -31,24 +30,20 @@ export const ControlColumnCellRender = memo(function RowCellRender(props: Unifie
   return (
     <Actions
       {...props}
-      ecsData={ecsData ?? event.ecs}
       ariaRowindex={rowIndex}
-      rowIndex={rowIndex}
-      checked={false}
       columnValues="columnValues"
+      ecsData={ecsData ?? event.ecs}
       eventId={event?._id}
       eventIdToNoteIds={eventIdToNoteIds}
       isEventPinned={isPinned}
       isEventViewer={false}
-      loadingEventIds={emptyLoadingEventIds}
       onEventDetailsPanelOpened={noOp}
-      onRowSelected={noOp}
       onRuleChange={noOp}
-      showCheckboxes={false}
       showNotes={true}
       timelineId={TimelineId.active}
       toggleShowNotes={onToggleShowNotes}
       refetch={noOp}
+      rowIndex={rowIndex}
     />
   );
 });
diff --git a/x-pack/plugins/translations/translations/fr-FR.json b/x-pack/plugins/translations/translations/fr-FR.json
index 45f91ad82c4acd..60f777a8f6b8c7 100644
--- a/x-pack/plugins/translations/translations/fr-FR.json
+++ b/x-pack/plugins/translations/translations/fr-FR.json
@@ -36699,7 +36699,6 @@
     "xpack.securitySolution.hostsTable.osLastSeenToolTip": "Dernier système d'exploitation observé",
     "xpack.securitySolution.hostsTable.osTitle": "Système d'exploitation",
     "xpack.securitySolution.hostsTable.versionTitle": "Version",
-    "xpack.securitySolution.hoverActions.checkboxForRowAriaLabel": "Case {checked, select, false {non cochée} true {cochée}} pour l'alerte ou l'événement de la ligne {ariaRowindex}, avec les colonnes {columnValues}",
     "xpack.securitySolution.hoverActions.investigateInResolverTooltip": "Analyser l'événement",
     "xpack.securitySolution.hoverActions.pinEventForRowAriaLabel": "{isEventPinned, select, false {Épingler} true {Désépingler}} l'événement de la ligne {ariaRowindex} {isEventPinned, select, false{dans} true {de}} la chronologie, avec les colonnes {columnValues}",
     "xpack.securitySolution.hoverActions.viewDetailsAriaLabel": "Afficher les détails",
diff --git a/x-pack/plugins/translations/translations/ja-JP.json b/x-pack/plugins/translations/translations/ja-JP.json
index 8074fc8815f89c..94d4a9eb749333 100644
--- a/x-pack/plugins/translations/translations/ja-JP.json
+++ b/x-pack/plugins/translations/translations/ja-JP.json
@@ -36668,7 +36668,6 @@
     "xpack.securitySolution.hostsTable.osLastSeenToolTip": "前回観察されたオペレーティングシステム",
     "xpack.securitySolution.hostsTable.osTitle": "オペレーティングシステム",
     "xpack.securitySolution.hostsTable.versionTitle": "バージョン",
-    "xpack.securitySolution.hoverActions.checkboxForRowAriaLabel": "行 {ariaRowindex}、列 {columnValues} のアラートまたはイベントのチェックボックスを{checked, select, false {オフ} true {オン}}",
     "xpack.securitySolution.hoverActions.investigateInResolverTooltip": "イベントを分析します",
     "xpack.securitySolution.hoverActions.pinEventForRowAriaLabel": "行 {ariaRowindex}、列 {columnValues} のイベントを{isEventPinned, select, false {固定} true {固定解除}}",
     "xpack.securitySolution.hoverActions.viewDetailsAriaLabel": "詳細を表示",
diff --git a/x-pack/plugins/translations/translations/zh-CN.json b/x-pack/plugins/translations/translations/zh-CN.json
index 0d52e86e5b9a30..9182411a5b93dc 100644
--- a/x-pack/plugins/translations/translations/zh-CN.json
+++ b/x-pack/plugins/translations/translations/zh-CN.json
@@ -36712,7 +36712,6 @@
     "xpack.securitySolution.hostsTable.osLastSeenToolTip": "上次观察的操作系统",
     "xpack.securitySolution.hostsTable.osTitle": "操作系统",
     "xpack.securitySolution.hostsTable.versionTitle": "版本",
-    "xpack.securitySolution.hoverActions.checkboxForRowAriaLabel": "告警或事件第 {ariaRowindex} 行的{checked, select, false {已取消选中} true {已选中}}复选框，其中列为 {columnValues}",
     "xpack.securitySolution.hoverActions.investigateInResolverTooltip": "分析事件",
     "xpack.securitySolution.hoverActions.pinEventForRowAriaLabel": "将第 {ariaRowindex} 行的事件{isEventPinned, select, false {固定} true {取消固定}}到时间线，其中列为 {columnValues}",
     "xpack.securitySolution.hoverActions.viewDetailsAriaLabel": "查看详情",