01H009 - Walter 9/64-Inch SST Heavy-Duty Stub Drill Bit

Precision Drilling with Walter SST Stub Drill Bits

The Walter 01H009 9/64" SST Stub Drill is a high-performance cutting tool engineered for professionals who demand precision, durability, and efficiency. Known in the industry as "screw machine" length drills, these stub bits feature a shorter flute and overall length compared to standard jobber bits. This compact design provides maximum rigidity, drastically reducing the likelihood of breakage under stress. For industrial MRO environments where reliability is paramount, the Walter SST series stands out by offering a robust solution for drilling through tough materials without the constant frustration of snapped tools.

At the core of this drill's performance is its 135° split point geometry. Unlike standard 118° points that can wander or "walk" across the workpiece before penetrating, the split point bites into the material immediately upon contact. This self-centering capability is particularly valuable when working with round surfaces or smooth sheet metal, often eliminating the need for a center punch entirely. The result is a cleaner, more accurate hole placement with less effort required from the operator.

Walter has treated these bits with their proprietary Bronze SST surface treatment. This specialized coating serves a dual purpose: it increases the surface hardness of the bit and significantly reduces the coefficient of friction during the drilling process. By minimizing friction, heat generation is kept in check—heat being the primary enemy of cutting tool longevity. This makes the 01H009 particularly effective for drilling high-tensile materials such as stainless steel, as well as mild steel and non-ferrous metals. Whether used in a stationary drill press or a portable hand drill, this tool delivers consistent, burr-free results.

The stub length design is not just about durability; it is also about accessibility. Maintenance and repair operations often require drilling in confined spaces where a standard length bit simply will not fit. The compact profile of the Walter 01H009 allows technicians to work in tight quarters without compromising on power or precision. Combined with its heavy-duty web construction, this drill bit is an essential addition to any professional toolkit, offering a perfect balance of strength, accuracy, and versatility for demanding industrial applications.