The purpose of this study was to analyze the influence of the setting and the presence of solid lubricant on the abutment screw surface in the flexural strength of the joint implant / abutment / screw. Forty abutments were connected to external hex implants, divided in four groups (n=10) FE (titanium alloy screw threaded in the extremity), LE (titanium alloy screw with solid lubricant and thread in the extremity), FT (titanium alloy screw with threaded in all its length) and LT (titanium alloy screw with solid lubricant and thread in all its length). Through the mechanical flexural test, the implant/abutment resistance was evaluated with load applied perpendicular to the long axis in mechanical testing machine (EMIC) under speed of 0.5 mm/min. Data were submitted to statistics test and results showed statistically significant differences between FE and the other groups, and FE showed the lowest values. The LE group showed greater values than the LT and were statistically significant. According to the methodology used, it can be conclude that within non-coated titanium screws, the screw threaded along its entire length provided greater rigidity to the implant set, while within the screw containing solid lubricant the screw threaded in all its length provided less rigidity of the implant set than the only thread on the end. Among the same geometry, those with the solid lubricant are statistically higher than those which do not have threads just in the end, but those with threads along its entire length doesn't show differences statistically significant.