01J033 - Walter SST+ #33 Cobalt Stub Drill Bit

High-Performance Drilling with Walter SST+ Stub Series

The Walter 01J033 SST+ Stub Drill Bit is a premium cutting tool designed to address the specific challenges of industrial drilling applications. In the world of metal fabrication and MRO, precision and durability are paramount. Standard length drill bits often suffer from flexibility issues, leading to wandering, inaccurate holes, or catastrophic breakage when pressure is applied. The SST+ Stub series solves this by utilizing a screw machine length (stub) design. This shorter overall length and flute geometry provide exceptional rigidity, ensuring that the energy from the drill is transferred directly into the cutting action rather than being lost to flexion.

Manufactured from a high-grade cobalt blend, this #33 wire gauge bit is engineered to withstand the high temperatures generated when drilling tough alloys. The cobalt content maintains the hardness of the cutting edge even under extreme thermal stress, making it the ideal choice for stainless steel, mild steel, and non-ferrous metals. The addition of Walter’s proprietary bronze SST surface treatment further enhances performance by reducing friction and facilitating smooth chip evacuation. This treatment acts as a lubricant, preventing the material from galling or welding to the bit, which is a common cause of tool failure in aluminum and stainless applications.

Efficiency is key in production environments. The 01J033 features a 135° split point geometry that self-centers immediately upon contact with the workpiece. This eliminates the time-consuming step of center punching and prevents the bit from "walking" across the surface, which can damage expensive sheet metal or finished parts. Whether used in a stationary drill press for repetitive manufacturing or a portable hand drill for maintenance repairs, this bit delivers consistent, round holes with minimal burr formation. For professionals seeking to maximize productivity and minimize tool replacement costs, the Walter SST+ Stub Drill Bit is the superior choice.