<?php $args = array( 'post_type' => 'nav_menu_item', 'orderby' => 'menu_order', 'order' => 'ASC', 'tax_query' => array( array( 'taxonomy' => 'nav_menu', 'field' => 'slug', 'terms' => 'my' ) ) ); query_posts($args); while( have_posts()):the_post(); echo $post->ID; endwhile; wp_reset_query();?>