Gagemaker's Tolerance Chart Size Range Class XX Class X Class Y Class Z .0100" to .8250" 0.254mm to 20.960mm .00002" .00051mm .00004" .00102mm .00007" .00178mm .00010" .00254mm .8251" to 1.5100" 20.961mm to 38.350mm .00003" .00076mm .00006" .00152mm .00009" .00229mm .00012" .00305mm 1.5101" to 2.5100" 38.351mm to 63.750mm .00004" .00102mm .00008" .00203mm .00012" .00305mm .00016" .00406mm 2.5101" to 4.5100" 63.751mm to 114.550mm .00005" .00127mm .00010" .00254mm .00015" .00381mm .00020" .00508mm 4.5101" to 6.5100" 114.551mm to 165.350mm .000065" .00165mm .00013" .00330mm .00019" .00483mm .00025" .00635mm 6.5101" to 9.0100" 165.351mm to 228.850mm .00008" .00203mm .00016" .00406mm .00024" .00610mm .00032" .00813mm 9.0101" to 12.0100" 228.851mm to 305.050mm .00010" .00254mm .00020" .00508mm .00030" .00762mm .00040" .01016mm

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