National Crane 638H Specifications

The 20.0-ton USt (16.3 metric ton) lifting capacity National Crane 638H Boom Truck is equipped with a three-section 16' - 38' (4.9 - 11.6 m) telescopic boom. 

The 638H was previously part of the National Series 600H Boom Truck Crane product lineup.  This model can be Tractor Mounted, Low Profile or Standard Behind Cab Mounted, or Rear Mounted on Truck Chassis.

While no longer part of the official product lineup, this model is fully supported by a network of National Crane Distributors.