1/4″ Spiral Flute Hand Expansion Reamer HSS DWRRHDES1/4 Certified

Industrial bore finishing tools for precision hole sizing in metalworking and fabrication environments. This specification sheet details a 0.25 inch diameter spiral flute hand expansion reamer crafted from High Speed Steel for manual operation and reliable final bore quality.

Specs

Dimensions: Diameter: 0.25 inches

Drive type: Manual

Material grade: High Speed Steel (HSS)

Features

Spiral flute design: Improves chip clearance, reduces clogging, and yields a smoother bore finish; enhances hole roundness during hand reaming.

Manual control: Allows operator tactile feedback for precise diameter attainment and alignment when finishing bushings, dowel holes, or bearing bores.

Tool material: High Speed Steel provides wear resistance and temperature tolerance under conventional reaming cuts with appropriate lubrication.

Applications: Finishing and aligning holes for bushings, shafts, and dowel pins in machine frames, fixtures, and automotive assemblies.

Operational guidance: Use cutting fluid or oil to minimize heat buildup; apply steady, light cutting action; clean swarf after use to preserve edge geometry.