01R228 - Walter SST+ 7/16" Drill Bit with 3/8" Reduced Shank

High-Performance Drilling for Tough Alloys

The Walter 01R228 SST+ Drill Bit is engineered for industrial professionals who demand precision and durability when working with hard metals. This 7/16-inch diameter bit features a specially designed 3/8-inch reduced shank, making it compatible with standard 3/8-inch drill chucks found on many portable power tools. This unique feature allows operators to drill larger holes without upgrading to heavier, 1/2-inch chuck machinery, providing flexibility on the shop floor or job site.

At the core of this tool is Walter's proprietary SST+ geometry. Unlike standard high-speed steel bits, the SST+ series is formulated with a heavy-duty web and a 135° split point. This aggressive point angle ensures the bit self-centers immediately upon contact, eliminating the need for center punching and preventing the bit from "walking" or skating across the workpiece. This is particularly critical when drilling into round surfaces such as pipes or tubing, where precision is paramount.

Designed specifically for MRO (Maintenance, Repair, and Operations) applications, this drill bit excels in cutting through mild steel, non-ferrous metals, and particularly stainless steel. The advanced flute design promotes rapid chip evacuation, reducing heat buildup—the primary cause of premature bit failure. By maintaining a cooler cutting edge, the Walter 01R228 delivers a significantly longer service life, reducing downtime and replacement costs for industrial operations.

Whether you are fabricating structural components or performing maintenance on heavy machinery, the Walter SST+ reduced shank drill bit offers the reliability required for consistent, accurate hole making. It stands as a testament to Walter Surface Technologies' commitment to providing superior abrasive and cutting solutions for the metalworking industry.