Hertel C.40W.1429 Taper Length Drill Bit 0.5625 in Hss

Product Description

The HERTEL C.40W.1429 is a taper length twist drill bit designed for metal cutting applications where a longer flute length is needed beyond a jobber-length bit. Ground from high-speed steel (HSS) with a black oxide finish, it features a 118-degree standard point angle and a right-hand spiral flute for efficient chip evacuation. The straight-cylindrical shank seats securely in standard drill chucks. Web thinning reduces thrust at the point and improves centering, while the tapered web configuration adds rigidity through the body. At 8.25 inches overall with a 4.875-inch flute length, this bit handles deeper holes in a single pass without a pilot bore.

This drill bit is suited for metalworking, fabrication, and maintenance trades requiring extended reach in ferrous and non-ferrous metals. The taper length geometry makes it a common choice when drilling through structural steel, plate stock, or thick-walled tubing where a jobber bit would fall short. It is used by machinists, millwrights, pipefitters, and general fabricators working with drill presses, lathes, and high-torque hand drills.

Key Features

• HSS construction provides heat resistance and durability in metal drilling applications
• Black oxide finish reduces friction and offers mild corrosion resistance during storage and use
• 118-degree standard point angle suits general-purpose drilling in a wide range of metals
• Right-hand spiral flute promotes consistent chip removal and reduces heat buildup
• Web-thinned tapered web lowers cutting thrust and improves point stability at entry
• Straight-cylindrical shank at 0.5625 inches diameter fits standard 3-jaw drill chucks directly

Compatibility

Designed as a standard taper length drill bit compatible with any drill press, lathe tailstock, or hand drill equipped with a chuck accepting a 0.5625-inch straight-cylindrical shank.

Installation Notes

This bit is installed and removed by a licensed machinist or qualified tradesperson using a standard keyed or keyless chuck. Ensure the drill or drill press is fully powered down and the chuck is secure before beginning. Use appropriate cutting fluid or lubricant when drilling steel to extend tool life and manage heat. Do not exceed the recommended feed rate for the material being drilled, as excessive pressure can cause point chipping or premature wear.