An electrical connector 10 is disclosed for connecting two printed circuit boards 50,60. The electrical connector 10 features a insulative housing 12 having a plurality of contacts 18 disposed in contact-receiving slots 32. The contact-receiving slots 32 extend between the mating faces 22,24 and back to a curved end wall 30. A retainer pin 16 is pressed into a retaining slot 14 of the housing to hold the contacts 18 firmly against the curved end wall 30 at a center point 28. Upon mating, the contact will experience a wiping action across the pads 52,62 of each of the circuit boards.