Abstract: Apparatus for securing against removal of the hinge pin of a door or other closure. The arrangement comprises an inner sleeve with holes to align with a hole in the hinge pin to accomodate a holding pin. An outer cylinder encloses the inner sleeve to prevent the escape of the holding pin. A wafer lock has a body which extends through the outer cylinder into the inner sleeve which is provided with internal notches or grooves. Removal of the key causes wafers to extend form the key body to grip the notches or grooves thereby preventing removal of the hinge pin from the hinge. Other embodiments of the inner sleeve fascilitate its use.