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A prediction of shear resistance using lag screw is required to obtain a reliable design timber connection against lateral forces and to know how failure mode from that connection.In this study, shear resistance was evaluated by taking shear test of the joint to the lateral load by using monotonic loading and analysis model adopted from EYM (European Yield Model). The types of timber used were Toona sureni (specific gravity 0.45), Swietenia mahogany (specific gravity 0.51) and Artocarpus heterophyllus (specific gravity 0.54) and concrete with actual compressive strength of 15.93 MPa. Lag-screw in 8 mm diameter (length 130 mm), washer in 22.8 mm diameter and fischer S14 were also used. The percentages results of shear resistance (5% offset method) between the predictions and experiment were 36,40% until 48,15%. These results showed that shear resistance to predicted equation of EYM was close enough to shear resistance based on the test results