01W153 - Walter 01W153 Multi-Step Reamer 13/16-Inch to 1-1/16-Inch

Precision Hole Enlargement and Alignment

The Walter 01W153 Multi-Step Reamer is a specialized cutting tool engineered for industrial professionals who require precision and efficiency when enlarging or aligning holes in metal. Unlike standard drill bits that can grab or wander when widening an existing hole, this step reamer is designed to shave material away cleanly and progressively. Covering a diameter range from 13/16" to 1-1/16" across five distinct steps, it offers versatility for various bolt hole sizes commonly found in structural steel and heavy fabrication environments.

One of the standout features of this tool is its step thickness. Each of the five steps is 1/2" thick, which is significantly deeper than standard sheet metal step bits. This design characteristic makes the 01W153 uniquely capable of drilling through thicker metal plates or aligning stacked pieces of material with a combined thickness of up to 1/2". This capability is essential for maintenance and repair operations (MRO) where aligning bolt holes on flanges, beams, or machinery frames is a frequent challenge. The tool effectively acts as both a drill and a reamer, streamlining the workflow by reducing tool changes.

Performance reliability is ensured through the robust shank design. The 3/8" shank features three ground flats, which lock securely into standard drill chucks. This prevents the bit from spinning inside the chuck under high-torque loads—a common issue when drilling large diameter holes in tough alloys like stainless steel. Whether working with aluminum, mild steel, or stainless steel, the Walter Multi-Step Reamer delivers consistent, burr-free results, ensuring that fasteners fit correctly every time. It is an indispensable addition to any industrial tool crib focused on metalworking efficiency.