The 3504-291 is a 1350 series pinion yoke designed to mate with stub 3153-291 and 3153-292. It features a spline count of 29 and a spline diameter of 1.276 inches. The hub diameter measures 1.710 inches, and the through hole is 1.500 inches, with a center-to-end measurement of 3.188 inches. This yoke uses strap kit 3570-20 and requires a 16-74-101 nut for installation.