The aircraft landed in a near maximum velocity crosswind and while braking to control/correct a swerve, the right main landing gear separated from the aircraft. The landing was on runway 28R and the wind was from 200 degrees at 10 to 14 knots on final and 12 knots when the pilot was over the threshold. The aircraft touched down on the left wheel and bounced a little. It touched down again on the left gear and the pilot raised the tail. The right main came down with the tail still in the air. At about 40 mph the tail was lowered and the aircraft started a left turn. The pilot corrected with full rudder and right braking. The pilot detected a sinking on the right side and then the right strut collapsed. When he deplaned the pilot discovered the right gear had separated. The maximum demonstrated crosswind velocity for this aircraft (Cessna 185) is 15 knots. Metallurgical tests were performed on the right wheel spindle attaching nuts and bolts which showed that the rear bolts failed at the interface of spindle and strut due to tensile overload.