High security metal safes typically have a heavy stainless steel door that, when closed, is secured by a series of hardened Slide door bolts that extend from the door into the frame of the safe surrounding the door. A recess or pocket is provided in the door frame for each of the door bolts. The door bolts are aligned with the pockets, and slide there into when the safe is locked. While these types of safes are very secure, they tend to be very expensive and very heavy, and are not generally suitable for a typical consumer. Such as brass door bolts. Like their high security counterparts, lower cost open jamb-type safes comprise a steel case with a door that is secured closed by a series of hardened stainless steel door bolts. However, unlike a high security safe, an open-jamb type safe simply has an inside door jamb against which all the bolts press, rather than having individual sleeves or pockets into which each bolt slides. When the bolts are extended, the door cannot open because the bolts press against the inside of the door frame. Unfortunately, with this type of locking mechanism, open jamb-type safes present some common problems. One problem is that when the door is closed and bolted, there tends to be some flexure of the door relative to the door frame. One can actually pull on a door bolt and watch the edge of the Zinc Alloy Adjustable Bolt move outward next to the frame. This condition does not necessarily represent a functional flaw of the safe, but it is objectionable to consumers, and gives the impression of low quality goods.