A lumbar spine implant has a body with bone screw bores that angle from a metal faceplate situated at an end of the body, the bone screw bores sized such that the bone screw bores become threaded during introduction of a bone screw thereby providing a locking mechanism to prevent the bone screw from backing out. The faceplate also provides a pocket for each bone screw that prevents the bone screw head from advancing through the implant body. The lumbar spine implant has four bone screw bores, two of which extend from the faceplate to the upper side of the body, and two of which extend from the faceplate to the lower side of the body. More or less bone screw bores may be provided. Preferably, but not necessarily, the direction of the bone screw bores are staggered from one lateral side to another lateral side of the body.