Harnish Group Inc. is the Caterpillar Dealer in Central and Western Washington, Central and Eastern Montana, Northwestern Wyoming, Northwestern North Dakota and the state of Alaska. Our Member Companies are N C Machinery, N C The Cat Rental Store, N C Power Systems, Tractor & Equipment Co., T & E The Cat Rental Store, T&E Power Systems, and SITECH Northwest Inc., representing Caterpillar, and other manufacturers.