01A525 - Walter SST+ 25/64-Inch Cobalt Drill Bit for Stainless Steel

Industrial-Grade Precision with Walter SST+ Technology

The Walter 01A525 SST+ Drill Bit (25/64") represents the pinnacle of drilling technology for industrial maintenance and fabrication environments. Engineered by Walter Surface Technologies, the SST+ series is specifically designed to overcome the common challenges associated with drilling tough materials. At the core of this tool is a premium cobalt blend formulation. Unlike standard High-Speed Steel (HSS) bits, the addition of cobalt significantly increases the bit's red hardness, allowing it to maintain a sharp cutting edge even under the high temperatures generated when drilling hard alloys like stainless steel.

One of the distinguishing features of the SST+ line is the unique "High Flow" flute design. In industrial applications, heat buildup and chip clogging are primary causes of premature tool failure. The High Flow geometry is engineered to evacuate chips more efficiently from the hole, reducing friction and heat accumulation. This design not only protects the integrity of the bit but also enables faster drilling speeds, directly translating to increased productivity on the shop floor. The bit is constructed with a heavy-duty, fully ground body, ensuring precise concentricity and reducing the risk of breakage under torque.

Furthermore, the 01A525 features a specialized Bronze SST surface treatment. This proprietary coating acts as a lubricant and a heat shield, further reducing the coefficient of friction between the tool and the workpiece. This treatment, combined with the 135° split point geometry, ensures that the bit centers immediately upon contact, eliminating the need for center punching and preventing "walking" across the surface. Whether utilized in a stationary drill press or a portable hand drill, the Walter SST+ 25/64" bit delivers consistent, round holes with minimal burr formation, making it an essential asset for MRO professionals demanding reliability and performance.