Abstract: A pin header (10) for being mounted onto a printed circuit board (30) includes a dielectric housing (12) and a single row of terminal pins (14) in the housing. The housing forms a pair of boardlocks (16) and a stabilizer bar (18) on a same lateral side (122) thereof. Each boardlock forms a pair of legs (162) for being interferingly inserted into a hole (34) in the printed circuit board for preventing the housing from floating during soldering or rocking toward a second lateral side (123) of the housing opposite the lateral side (122). The stabilizer bar has a bottom surface (182) generally co-planar with a bottom face (124) of the housing for abutting on a top surface (36) of the printed circuit board, for preventing the housing from leaning toward the lateral side. Therefore, the terminal pins can be correctly soldered into first holes (32) of the printed circuit board since the header is stabilized by the boardlock and the stabilizer bar.