Hardware Stores in New Castle, CO Mr T's Hardware & Building Supply6300 County Road 335New Castle, CO, 816479709842977Building MaterialsHardware StoresLumber MillLumber YardLumber YardsPlumbing Supply Mr. T's Do it Best Hdwe & B/s6300 County Road 335New Castle, CO, 816479709842977Hardware StoresPlumbing Supply Show MoreSee AlsoPaint