Standard ID Tolerance (G6):
From .35 to 3mm +.002/+.008mm
Over 3 to 6mm +.004/+.012mm
Over 6 to 10mm +.005/+.014mm
Over 10 to 18mm +.006/+.017mm
Over 18 to 30mm +.007/+.020mm
Over 30 to 50mm +.009/+.025mm
Over 50 to 80mm +.010/+.029mm
Over 80 and up +.012/+.034mm
Reamer ID Tolerance (F6) (Special):
From 1 to 3mm +.006/+.012mm Over 3 to 6mm +.010/+.018mm
Over 6 to 10mm +.013/+.022mm
Over 10 to 18mm +.016/+.027mm
Over 18 to 30mm +.020/+.033mm
Reamer bushings have a different ID-tolerance range than drill bushings. To special-order bushings with the reamer ID tolerance shown here, add "-REAMER" to the part number:
PM-8-12-4.50-REAMER (Special)