1/4″ HSS S/S SP/FL MACHINE REAMER

Left hand spiral flute, right hand cutting. Manufactured to BS 122.

INCH TOLERANCES:
Diameter: ~ up to 1/8″. Tolerance: High +0.0003, Low -0.0001.
Diameter: Over 1/8″ ~ up to 15/64″. Tolerance: High +0.0004, Low -0.0002.
Diameter: Over 15/64″ ~ up to 3/8″. Tolerance: High +0.0005, Low -0.0002.
Diameter: Over 3/8″ ~ up to 5/8″. Tolerance: High +0.0006, Low -0.0003.