The M5 resulted from the fact that White, Autocar, and Diamond T could not keep pace with the demand for half-track personnel carriers, and was analogous to the M3 half-track. The front wheels on IHC half-tracks could be engaged for cross-country travel as well. M5s differed in several respects from the M3, however. The M5's fenders were flat in cross-section, and the M5 was never fitted with the large fender-mounted headlights. International Harvester used rolled homogeneous steel armor on their vehicles, which allowed plates to be welded together, giving IHC's half-tracks a smoother appearance than the bolted half-tracks. The rolled homogeneous armor could also be formed, and IHC's half-tracks featured rounded rear corners, which contrast to the right-angled corners on the machines with face-hardened armor. Homogeneous armor lessened the chance of injury due to bullet splash and flying cap screws which could be dislodged when hit, but it was not as strong as face-hardened plate. This meant that the armor on IHC's half-tracks needed to be thicker than the face-hardened armor of the M3 to offer the same protection. The M5 was therefore fitted with heavier axles and hull strengthening components, but its performance still essentially equalled that of the lighter M3. The M5's length with the anti-ditching roller was 242.19" (615.16cm).