var columnsSpecification = [
      {
          type: 'text',
          bRegex: true,
          bSmart: true
      }, {
          type: 'text',
          bRegex: true,
          sWidth:"90px"}];


    $scope.dtOptions = DTOptionsBuilder.newOptions()
      .withBootstrap()
      .withOption('scrollX', '700%')
      .withOption('scrollY', height + 'px')
      .withOption('oLanguage', { "sEmptyTable": " " })
      .withOption('lengthMenu', [[-1, 1000, 100, 50, 25, 10], ['All', 1000, 100, 50, 25, 10]])
      .withOption('paging', false)
      .withOption('bInfo',false)
      .withColumnFilter({
      aoColumns:columnsSpecification
  })
  .withTableTools('/Content/DataTables/swf/copy_csv_xls.swf')
  .withTableToolsButtons(['xls']);

<table id="table-machines" datatable="ng" class="table table-striped" dt-options="dtOptions">
    <thead>
        <tr>
            <th>Name</th>
            <th style="width: 90px !important">Value</th>
        </tr>
    </thead>
    <tbody>
        <tr ng-repeat="m in records>
            <td>{{m.name}}</td>
            <td style="width: 90px !important">{{m.Value}}</td>
        </tr>
    </tbody>

vm.dtColumns = [
        DTColumnBuilder.newColumn('id').withTitle('ID').withOption('width', '5%')
    ];

vm.dtColumnDefs = [
    DTColumnBuilder.newColumn(1).withOption('width', '90px')
  ];

$scope.dtOptions = DTOptionsBuilder.newOptions()
    .withOption('autoWidth', false)