Astele stenomphala is a species of sea snail, a marine gastropod mollusk in the family Calliostomatidae.

The sharply conical shell is keeled and, narrowly umbilicate.

The obtuse keel which ascends the spire above the suture is ornamented with close-set elongate tubercles.

The granules upon the slight angulation at the middle of the whorls are somewhat larger than those above and below.

The columella is barely perpendicular and at its base obsoletely tubercled.