01J001 - Walter SST Cobalt Stub Drill Bit - Size #1 - Heavy Duty Sheet Metal Bit

Precision Drilling for Industrial Fabrication

The Walter 01J001 SST Stub Drill Bit (Size #1) is an industrial-grade cutting tool engineered to solve the common challenges associated with drilling hard materials and thin gauge metals. Manufactured by Walter Surface Technologies, this bit belongs to the renowned SST+ family, known for delivering exceptional performance in high-tensile alloys. The core of this tool is its premium cobalt blend construction. Unlike standard high-speed steel (HSS) bits, the addition of cobalt significantly increases the red hardness of the bit, allowing it to maintain a sharp cutting edge even under the extreme temperatures generated when drilling stainless steel and other tough metals.

A defining feature of the 01J001 is its "stub" or screw machine length. By shortening the overall length and the flute length, Walter has created a bit with superior rigidity. In industrial environments, bit deflection and breakage are costly interruptions. The stout profile of this stub drill virtually eliminates flexing, ensuring that the energy from the drill motor is transferred directly into the cut. This rigidity is particularly critical when using hand-held portable drills, where off-axis pressure often snaps standard jobber-length bits. Furthermore, the specialized Bronze SST surface treatment acts as a high-performance lubricant carrier, reducing coefficient of friction and facilitating smoother chip evacuation.

Precision is guaranteed through the 135° split point geometry. This aggressive point angle allows the bit to bite into the material immediately upon contact, preventing the "walking" or skating effect common with 118° points. This self-centering capability removes the need for pre-punching, streamlining the fabrication workflow. Whether utilized in a stationary drill press or a portable power tool, the Walter #1 SST Stub Drill Bit delivers consistent, round, and burr-free holes, making it an indispensable asset for MRO professionals and metal fabricators demanding reliability and speed.