Gearbox: Mack TR36 5-speed direct-top Transfer Case: Timken-Detroit 2-speed T77 with 2.55 low Wheelbase: 14 feet 9 inches (4.50 m)Tires 9.75-22 (NM-1, -2, -3 Lee commercial with highway tread) The NM-1 and NM-2 had an amidships mounted winch with a capstan head.

The cargo body had troop seats, a canvas cover, and a spare wheel on the front right side.

It was similar to the NM-1 and NM-2 except for: front pintle for positioning artillery pieces, arched bumper (front pintle under the arche), smaller brush guard, side lights on mudguards, towing hooks on bumper deleted, radiator shell with Mack nameplate.

[4] The Mack NM also served in the British Army in the Second World War, including as tractors for 50/60 pontoon bridge transporting and launching trailers.

[7][8] Standard Mack NMs also served in the Canadian Army in a number of roles including towing radars in Heavy Anti-aircraft artillery Regiments, and in Royal Canadian Army Service Corps service towing laundry laundry trailers and in armoured formations in lieu of 10-ton NMs.