Hertel 42049 Cobalt Jobber Drill Bit 19/32 in 135 Deg

Product Description

The HERTEL 42049 is a cobalt jobber-length drill bit designed for high-performance drilling in hard and abrasive materials. Measuring 19/32 inch (0.5938 inch) in diameter with a 7-1/8 inch overall length, this bit features a 135-degree split point that reduces walking and lowers the thrust needed to start a hole without a center punch. An oxide and gold coating improves surface hardness and heat resistance. The two-flute right-hand spiral configuration evacuates chips efficiently during through-hole drilling. Machinists, maintenance technicians, and metalworking tradespeople are the primary users of this tool.

The HERTEL 42049 is suited for drilling steel, stainless steel, cast iron, and other tough alloys in job shop, maintenance, and production environments. The 5-3/16 inch flute length supports deeper hole depths relative to diameter, making it appropriate for applications that demand a standard jobber-length reach. The straight cylindrical shank fits standard three-jaw drill chucks on both handheld and bench-mounted drilling equipment. Right-hand cutting direction is compatible with conventional drill press and handheld drill rotation.

Key Features

• Cobalt construction for improved red hardness and wear resistance in difficult materials
• 135-degree split point reduces thrust and eliminates center-punch requirements on most metals
• Oxide and gold coating adds surface hardness and reduces heat buildup at the cutting edge
• Two-flute regular spiral design promotes efficient chip evacuation
• 5-3/16 inch flute length supports deeper drilling relative to bit diameter
• Straight cylindrical shank fits standard drill chucks without adapters

Compatibility

Designed as a jobber-length drill bit with a straight cylindrical shank, compatible with any standard three-jaw drill chuck accepting a 19/32 inch shank diameter on drill presses, magnetic drills, and handheld power drills.

Installation Notes

Secure the shank fully in the chuck and confirm runout is within acceptable tolerance before drilling. Apply appropriate cutting fluid for the material being drilled to extend tool life and maintain cutting edge integrity. Operate at a spindle speed appropriate for the material and bit diameter — excessive speed in hard alloys will shorten tool life. Inspect the cutting edges for chipping or dulling before each use.