Hertel 16691750 Carbide Jobber Drill Bit 3/16 in 118 Deg Tin

Product Description

The HERTEL 16691750 is a solid carbide jobber-length drill bit designed for precision hole-making in hard and abrasive materials. Ground to a 118-degree standard point angle and finished with a Titanium Nitride (TiN) coating, this bit delivers improved surface hardness and extended tool life compared to uncoated alternatives. It cuts in a right-hand direction with a regular spiral flute and a web-thinned, tapered web configuration that reduces thrust and improves chip evacuation. The straight-cylindrical shank measures 3/16 inches in diameter, matching the 3/16-inch cutting diameter. The Series 450 designation places this bit in a jobber-length format with a 2-3/4-inch overall length and a 1-5/8-inch flute length. It is sized for machinists, tool-and-die work, and general precision drilling applications.

This bit is suited for drilling ferrous and non-ferrous metals, hardened steels, cast iron, and similar materials where carbide tooling is specified over high-speed steel. The 0.1875-inch decimal diameter and a diameter tolerance of -0.0005 to 0.0000 inches make it appropriate for close-tolerance work in production and maintenance machining environments. The 2-3/4-inch maximum drilling depth and compact jobber-length profile make it compatible with standard drill presses, CNC machining centers, and hand-held power tools equipped with appropriate chucks.

Key Features

• Solid carbide construction rated at Material Grade C2 for hardness and wear resistance
• TiN coating increases surface hardness and reduces friction at the cutting edge
• 118-degree standard point angle with web-thinned, tapered web to reduce entry thrust
• Right-hand, regular spiral flute geometry promotes consistent chip removal
• Straight-cylindrical shank for secure seating in standard drill chucks and collets
• Close-tolerance diameter ground to -0.0005 to 0.0000 inches for precise hole sizing

Compatibility

Designed as a jobber-length drill bit compatible with standard drill chucks and collets accepting a 3/16-inch straight shank, suitable for use in drill presses, CNC machining centers, and hand-held power tools.

Installation Notes

Carbide drill bits are brittle and susceptible to breakage under lateral stress — avoid side loading or using as a pry. Secure the workpiece firmly before drilling to prevent bit deflection. Use appropriate spindle speeds and feed rates for the material being drilled; refer to the tool manufacturer or machining reference data for carbide cutting parameters. No coolant-through capability is present on this bit, so external cutting fluid or air blast is recommended when drilling hard or heat-sensitive materials.