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The EAGLE CUTTING TOOL T500-020-I is a 5/16-inch high-speed steel (HSS) jobber-length drill bit with a titanium nitride (TiN) coating. The titanium coating increases surface hardness and reduces friction at the cutting edge, extending tool life in high-cycle drilling applications. Jobber-length geometry provides the standard flute length and overall reach most tradespeople and machinists rely on for general-purpose through-hole drilling. This bit is suited for use in hand drills, drill presses, and CNC equipment where a reliable, coated HSS bit is specified.
The T500-020-I is designed for drilling mild steel, cast iron, aluminum, wood, and similar materials commonly encountered in HVAC, plumbing, electrical, and light fabrication work. The 5/16-inch diameter is a frequently used size for clearance holes, pilot holes for larger bits, and conduit or pipe bracket installations. It performs well in both stationary and portable drilling setups across residential and light commercial jobsite conditions.
Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 5/16-inch straight shank.
Drill bits should be installed and operated by qualified tradespeople following applicable safety practices. Secure the workpiece before drilling and use appropriate cutting speeds for the material being drilled — lower speeds for harder metals, higher speeds for softer materials and wood. Wear appropriate eye protection at all times. Inspect the bit for chipping or wear before each use and replace if the cutting edge is damaged.
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