01H127 - Walter SST+ 27/64" Stub Drill Bit, 135-Degree Split Point

Precision Drilling for Thin-Walled Materials

The Walter 01H127 27/64" SST+ Stub Drill Bit is engineered for industrial environments where precision, speed, and tool longevity are paramount. Designed specifically for drilling through sheet metal, mild steel, and stainless steel, this drill bit features a heavy-duty stub length configuration (often referred to as screw machine length). This shortened profile significantly increases the torsional rigidity of the bit, minimizing deflection and virtually eliminating the risk of breakage under heavy feed pressure.

At the tip, the 01H127 utilizes a sophisticated 135° split point geometry. Unlike standard 118° points, this aggressive angle allows the drill to self-center immediately upon contact with the workpiece, removing the necessity for pre-drilling or center punching. This feature is particularly advantageous when working on rounded surfaces or in awkward positions where tool walking can damage the finish. The bit is manufactured from a premium High-Speed Steel (HSS) alloy and finished with Walter's proprietary bronze SST surface treatment. This treatment reduces friction and heat buildup, facilitating smoother chip evacuation and extending the cutting life of the tool even in tough alloys.

Ideally suited for automotive bodywork, HVAC fabrication, and general maintenance, the Walter SST+ Stub Drill delivers clean, burr-free holes with maximum efficiency. Its robust design ensures it can withstand the rigors of portable drilling applications while maintaining the accuracy required for stationary machine work.