POSITIVELY ENGAGED LATCH FOR SEAT ADJUSTER ASSEMBLY

A seat track assembly includes upper and lower tracks slidably coupled together. The lower track includes a locking window and the upper track includes a first aperture. A locking mechanism includes a mounting bracket fixedly secured to the upper track. The mounting bracket includes a second aperture. At least one pin is slidably guided by the second aperture for movement in and out of the locking window and first aperture for interlocking the upper and lower tracks. The pin includes opposite first and second sides and at least one of the sides includes a recess. The recess reduces a surface area of the respective side of the pin and defines upper and lower edges. The upper and lower edges of the recess lockingly engage with the upper and lower tracks in response to a dynamic impact to prevent withdrawal of the pin from the locking window and first aperture.