get quantity less then 5 in Magento

In this article get which product have less then or equal to 5 quantity. In many cases we want to disable product less then any number of quantity. Then we get product by coding. In this code print product sku.

Here is code....

 $collection = Mage::getModel('catalog/product')
  ->addAttributeToFilter('qty', array("lt" => 5));
 foreach($collection as $res)
  echo $res->getSku() . "<br>";